IRONMAN 70.3 · Mooloolaba · 12 Sept 2027
How to train for IRONMAN 70.3 Sunshine Coast
The organiser sells Mooloolaba as the flat and fast one, and it means it. A swim off the surf beach, a motorway it calls fast and smooth with few undulations, a two-lap run beside the ocean. Athletes hear that as permission. Flat means fast, fast means push, and the bike turns into a time trial with a half marathon bolted to the back of it.
The file argues with that reading in one place only. The road barely climbs, but two long flat stretches hold about two thirds of the bike leg between them, and a rider who treats them as a time trial arrives at the run with nothing left for the headland it crosses four times. A Trained athlete's day of 5:55:49 is set on those two stretches.
By Kian Briel, founder. Analysed by engine 1, updated
What is actually on the road
The organiser's own course files, drawn the way the Event Analyzer draws a member's race.
- Swim1.91 km4 m upCourse file
- Bike91.4 km460 m upCourse file
- Run21.6 km110 m upCourse file
The swim is a single counter-clockwise ocean lap of 1.9 km. It starts at the eastern end of Mooloolaba Beach, the more sheltered end, and finishes about 120 m west of where it began, with a rolling start that lets you seed yourself by expected swim time. You come out onto the sand, climb a short set of stairs, and you are in a transition that overlooks the beach.
The bike leaves from Parkyn Parade opposite the Mooloolaba Boat Ramp and reaches the Sunshine Motorway by Mooloolaba Esplanade and Buderim Avenue. Off the motorway it follows the beachfront to Maroochydore and back, then returns to Buderim Avenue for a second lap before heading home to Mooloolaba.
The run goes east from transition along The Spit, laps Point Park, and turns north onto the Mooloolaba Boardwalk and the Esplanade. It crosses Alexandra Headland Hill, which the organiser admits will burn your legs, and carries on to Cotton Tree by Sixth Avenue and Alexandra Parade. Then you do it all again and finish on Beach Terrace.
The profile is quiet. 460 m of climbing over 91.4 km, and the highest point in the whole bike file sits 36 m up. The climbing that exists comes in seven short rises, none longer than 322 m, plus a steady ripple of small rolls inside the flat sections. The steepest rise is 166 m at 6.6 percent, past kilometre 82, with the run a few kilometres away. The run adds 110 m and the whole course reads 95.5 percent flat by distance.
Course shape by distance
- Flat 96%
- Climbing 2%
- Descending 3%
The longest stretches
- Bike, flat29.5 km31% of the bike
- Bike, flat34.6 km37% of the bike
- Bike, climbing0.17 km1% of the bike
Each row is one unbroken stretch of the course that keeps the same shape the whole way. The number is how much of that leg you spend inside it, and it comes out the same whether you are fast or slow.
What this course asks of each leg
Twelve training dimensions scored for each leg against its own course, the way the Event Analyzer scores a member's race.
On every leg the same pair leads. The demand model reads aerobic endurance at 85 and muscular endurance at 81 in the water, on the bike and on the run, with threshold capacity at 70 behind them each time. A course this even pulls nothing away from the half-distance baseline. Because the bike fills 52 percent of a Trained athlete's day, the five largest demands in the cross-leg ranking all belong to it.
The differences between legs are small and they are worth reading. High-intensity capacity scores 51 on the bike against 42 on the run, and strength and force 45 against 37. That is the seven rises and the ripple between them, asking for short spells above steady power. The swim carries the highest technical score on the course at 67, which is what an ocean lap off a surf beach asks of your line and your start.
Now the bands. A Trained athlete finishes in 5:55:49. The bike takes 3:04:47 of that at 182 W, and the run 2:02:34 from an input of 5:06 /km threshold pace. The Competitive band comes home in 5:10:51 from 4.15 W/kg at 75 kg, about 21 minutes quicker on the bike and 18 on the run. Those minutes do not come from the rises. They come from a higher number held level for the whole ride, and from legs that can still run when the number stops.
The weather is mild. The organiser logged highs of 22 C in 2026 and 25 C in 2024, with the water at 20 C in both of the years it measured. The engine scores environmental resilience at 10 on every leg. The number worth noticing is the low of 9 C in 2025, on a race that starts in the sea.
- Aerobic endurance85
- Muscular endurance81
- Threshold capacity70
- Technical skill67
- Aerobic durability65
- Threshold durability65
- Fueling resilience55
- High-intensity capacity40
- Anaerobic capacity25
- Strength / force20
- Environmental resilience10
- Sprint power5
Nymiva reads what you can already show, from your own data
Connect your training history and the Focus Lab scores the same twelve dimensions this course demands against where you sit today. The gap between the two is what you train.
- MeasuredFrom your thresholds and testsThreshold power, threshold pace, critical swim speed and field tests you have done. The dimensions they can carry are scored directly.
- EstimatedFrom your training historyConnected activities are read for what they prove: long efforts, late-session fade, repeated hard work, fueling on long days. Each score says how it was read.
- ProxyFrom a stand-in, and named as oneWhere only an indirect signal exists, the score carries the proxy it came from and a lower confidence, never a number dressed as a measurement.
- UnmeasuredHonestly blankA dimension nothing in your data can answer stays unmeasured. It is never a zero, and the plan does not pretend to know it.
Every dimension ends in one word
- Develop the course asks more than you can show
- Maintain close enough to hold at the minimum dose
- Covered nothing to build here
- Unmeasured the course needs it, your data cannot say yet
Nymiva reads the course and the athlete on the same twelve dimensions. The course side comes from the files above. The athlete side comes from thresholds and connected training history, every score marked with what it was read from and how far it can be trusted. A gap exists only where the course asks for more than the athlete can show, and gaps are ranked by how much of race day they fill. Here the bike fills half of it, so a bike gap moves the plan further than the same gap in the water.
This page has no athlete behind it. The season under it assumes the plainest case, that the gaps sit where the demands are highest, and lays out 24 weeks in 5 developmental blocks before a two-week taper. Aerobic endurance leads the first block in all three sports. The second splits them, with swim technique, bike aerobic durability and run threshold durability each taking the lead in its own sport. Threshold capacity leads the third block, muscular endurance the fourth, and aerobic endurance returns to lead the last block before the taper. A member's season comes from their own numbers and will read differently.
Train the bike to protect the run
Which demands matter most across the whole race. A leg's demand counts for as much of the day as that leg takes, so a score of 85 on the bike outweighs the same score on the swim.
- 01Aerobic enduranceBike leg, 52% of the day85 × 52%44
- 02Muscular enduranceBike leg, 52% of the day81 × 52%42
- 03Threshold capacityBike leg, 52% of the day70 × 52%36
The bike takes 52% of the Trained reference band’s day, so its demands carry the most race weight. What the bike leaves in the legs is what the run gets.
Which demand gets a block, and when
The engine freezes one lead focus per sport on every developmental block, holds the rest at maintenance, and verifies before it reprioritises.
An illustration, not your plan. This page has none of your data, so the season below is the engine’s answer to one stated assumption: that your gaps line up with what IRONMAN 70.3 Sunshine Coast demands. Your own season is built from your history, your thresholds, the days you can train and the races you have entered, and it will differ from this in its priorities, its sessions and its load.
- 01Run muscular endurance, a practice block4 weeks
- 02Run aerobic endurance, a development block4 weeks
- 03Bike muscular endurance, a practice block4 weeks
- 04Bike aerobic endurance, a development block4 weeks
In the order the allocator places them, general first, most race-like last.
- Week 1PrepPrep
A lead-in week. It develops nothing by design.
- Weeks 2 to 5Foundation 1Closes with a recovery week
- PriorityBike aerobic endurance
- PriorityRun aerobic endurance
- PrioritySwim aerobic endurance
- SupportBike muscular endurance
- SupportRun muscular endurance
- SupportSwim muscular endurance
- SupportBike threshold capacity
- SupportRun threshold capacity
- SupportSwim threshold capacity
- SupportSwim technical skill
- SupportBike aerobic durability
- SupportRun threshold durability
- Weeks 6 to 9Foundation 2Closes with a recovery week
- PrioritySwim technical skill
- PriorityBike aerobic durability
- PriorityRun threshold durability
- SupportBike aerobic endurance
- SupportRun aerobic endurance
- SupportSwim aerobic endurance
- SupportBike muscular endurance
- SupportRun muscular endurance
- SupportSwim muscular endurance
- SupportBike threshold capacity
- SupportRun threshold capacity
- SupportSwim threshold capacity
- Weeks 10 to 13Foundation 3Closes with a recovery week
- PriorityBike threshold capacity
- PriorityRun threshold capacity
- PrioritySwim threshold capacity
- SupportBike aerobic endurance
- SupportRun aerobic endurance
- SupportSwim aerobic endurance
- SupportBike muscular endurance
- SupportRun muscular endurance
- SupportSwim muscular endurance
- SupportSwim technical skill
- SupportBike aerobic durability
- SupportRun threshold durability
- Weeks 14 to 17Event shaping 1Closes with a recovery week
- PriorityBike muscular endurance
- PriorityRun muscular endurance
- PrioritySwim muscular endurance
- SupportBike aerobic endurance
- SupportRun aerobic endurance
- SupportSwim aerobic endurance
- SupportBike threshold capacity
- SupportRun threshold capacity
- SupportSwim threshold capacity
- SupportSwim technical skill
- SupportBike aerobic durability
- SupportRun threshold durability
- Weeks 18 to 21Event shaping 2Closes with a recovery week
- PriorityBike aerobic endurance
- PriorityRun aerobic endurance
- PrioritySwim aerobic endurance
- SupportBike muscular endurance
- SupportRun muscular endurance
- SupportSwim muscular endurance
- SupportBike threshold capacity
- SupportRun threshold capacity
- SupportSwim threshold capacity
- SupportSwim technical skill
- SupportBike aerobic durability
- SupportRun threshold durability
- Weeks 22 to 23PeakPeak
The taper. Load comes down toward the race, content stays specific.
- Week 24RaceRace
Race week.
Held at maintenance between blocks
- Runmuscular endurance, aerobic endurance, aerobic durability, threshold capacity, threshold durability
- Bikemuscular endurance, aerobic endurance, aerobic durability, threshold capacity, threshold durability
- Swimaerobic endurance, aerobic durability, threshold capacity, threshold durability, muscular endurance, technical skill
Touches scheduled by each capability’s own decay, at a fraction of its development dose, so earlier work is still there on race day.
The sessions the blocks are built from
One entry per kind of work the block trains, at the intensity that work is meant to be done at. Where the same work runs at several lengths, the entry shows the span it grows across rather than one entry per length.
- Foundation 1 · Weeks 2 to 575 to 240 min
150 to 210 min at Zone 2
BikePower, Zone 2Trains aerobic capacity - Foundation 1 · Weeks 2 to 540 to 270 min
180 to 210 min at Zone 3, then 30 min at Zone 4
BikePower, Zone 3Trains aerobic capacity - Foundation 1 · Weeks 2 to 535 to 120 min
90 min at Zone 2
RunPace, Zone 2Trains aerobic capacity - Foundation 1 · Weeks 2 to 550 min
4 x 1.5 min at Zone 3, 6 min easy between
RunHeart rate, Zone 3Trains aerobic capacity - Foundation 1 · Weeks 2 to 545 to 51 min
4 x 8 min at Zone 2, 1 min easy between
SwimPace, Zone 2Trains aerobic capacity - Foundation 1 · Weeks 2 to 547 to 81 min
3 x 1000 m at Zone 3, 0.3 min easy between
SwimPace, Zone 3Trains aerobic capacity
7× climb-to-false-flat repeats
0.8 min at Zone 5, then 3.3 min at Zone 4, then 0.8 min at Zone 5, then 3.3 min at Zone 4, then 0.8 min at Zone 5, then 3.3 min at Zone 4, then 0.8 min at Zone 5, then 3.3 min at Zone 4, then 0.8 min at Zone 5, then 3.3 min at Zone 4, then 0.8 min at Zone 5, then 3.3 min at Zone 4, then 0.8 min at Zone 5, then 3.3 min at Zone 4, 8.8 min easy between
Compiled by the deterministic course compiler from the organiser’s file: the course’s one repeatable requirement, rehearsed at a dose the progression allows.
- Bike
- 106 min
- Trains muscular endurance
- Supports strength force
- Supports anaerobic capacity
- Supports threshold durability
24 weeks, laid out backwards from race day
The shortest runway Nymiva builds for this event type, with its blocks, recovery weeks, taper and race week in place.
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- Prep
- Foundation
- Event shaping
- Peak
- Race
- Recovery week
Your own season carries these same phases on your own dates, with the load solved from your fitness and the days you can train, and it changes when your data does.
What each level does on the day
Reference finish times per peer band, the pacing plan the model holds each band to, and where the day is decided.
| Band | Swim | Bike | Run | Finish |
|---|---|---|---|---|
| Recreational2:11 /100m critical swim speed · 2.47 W/kg at 75 kg · 6:08 /km threshold pace | 0:45:24 | 3:20:34 | 2:27:24 | 6:43:22 |
| Trained1:51 /100m critical swim speed · 3.03 W/kg at 75 kg · 5:06 /km threshold pace | 0:38:28 | 3:04:47 | 2:02:34 | 5:55:49 |
| Competitive1:36 /100m critical swim speed · 4.15 W/kg at 75 kg · 4:20 /km threshold pace | 0:33:16 | 2:43:27 | 1:44:08 | 5:10:51 |
| Elite1:26 /100m critical swim speed · 5.27 W/kg at 75 kg · 3:50 /km threshold pace | 0:29:48 | 2:29:17 | 1:32:07 | 4:41:12 |
Pacing plan
- 0 km0.3%29.3 km/h4:01
- 1.97 km5%12.9 km/h1:30
- 2.29 km0.4%28.8 km/h3:06
- 3.77 km-3.5%47.6 km/h0:48
- 4.41 km0%30.8 km/h57:28
- 33.9 km3.8%15.7 km/h1:00
- 34.2 km0.1%30.3 km/h9:11
- 38.8 km5.3%12.3 km/h1:28
19 more segments in the full plan.
- Run: reach 4:20 /km and this course gives back 44:58.
Where it is decided
On the motorway and the beachfront, where nothing seems to happen.
The engine puts 31 percent of the bike leg on one flat stretch of 29.5 km, and 37 percent on a second, 34.6 km long, that begins after halfway. That is two thirds of the ride on road with nothing to push against and nothing to slow you down. The organiser promises a speedy bike time here and the promise is honest, which is the trouble. Holding 182 W on that road feels like wasting it. Twenty watts more feels like good form and costs nothing you can measure until the run.
Then comes the part that collects. The seven rises are each over in a minute or two, and the engine's course session treats them for what they are: short, hard climbing efforts that each roll straight into several minutes of steady threshold riding, repeated through the set, so that you learn to crest and settle rather than crest and freewheel. The last and steepest of them sits past kilometre 82.
On the run the file climbs to its high ground four times, twice on each lap. The final pass is the steepest stretch of the leg, 231 m at 4.3 percent, and it begins with about 1.2 km to go. Whatever was overspent on the motorway is paid for there, a kilometre or so from Beach Terrace.
Getting it wrong
Seeding the rolling start on hope. You choose your own start zone by expected swim time, and a zone quicker than your swim puts you among faster swimmers who will tow you out harder than you meant to go. Then you climb the stairs into transition breathing like the race is nearly over.
Riding the first long flat to the organiser's promise. The motorway is smooth, the field is fresh, and the first 29.5 km stretch arrives while everyone still feels invincible. Set the power there and hold the same number out to Maroochydore and back. The second flat is longer, and it comes when the choices made on the first one start to show.
Racing the Esplanade on lap one. The organiser promises spectators all the way to the finish, and Alexandra Headland Hill is short enough to attack. It comes back three more times. Take it at the effort you can repeat on the fourth crossing, not the first.
Conditions on the day
- 2026high 22 C, low 15 C
- 2025high 23 C, low 9 Cwater 20 C
- 2024high 25 C, low 15 Cwater 20 C
From the organiser’s own records. Not a forecast.
Every session is a claim, every block is a test
A plan is not a calendar. Each key session states what it trains and how that is checked, and each block ends with a public verdict before the next one is chosen.
What a block promises
Bike aerobic endurance moves from your baseline to a stated target by the end of Foundation 1
- The baseline is your measured score when the block starts. The target is the score the model predicts for it.
- Verified at the block’s recovery week, by a field test or a refresh of the supply read from your history.
- Confidence rises by agreement between independent signals, never by one metric crossing a line.
- A block that misses its target is a public miss. The next block is chosen from what was proven, not from what was planned.
- 01Stimulus achievedThe work landed in the zone the session named, for the dose it named.
- 02Partially achievedSome of the work landed. The session banks what it can prove.
- 03Not achievedThe load may have been there. The stimulus was not, so nothing is banked.
- 04Data insufficientNo usable stream. The session is neither credited nor blamed.
- Session verified
- Progression banked
- Block verified
- Priority reassessed
- Plan adapted
Your numbers, this course
Analyze IRONMAN 70.3 Sunshine Coast against my fitness
The same simulation and the same Focus Lab read, on your thresholds instead of a band’s. Three numbers give a finish estimate and a partial read. A connected history gives the whole table.
The first 14 days are free.
- Trained band finish
- 5:55:49
- Of the day on the bike
- 52%
- Dimensions scored per leg
- 12
- Season runway shown
- 24 wk
Questions people ask
- Is the IRONMAN 70.3 Sunshine Coast bike course flat?
- Mostly. The organiser calls the Sunshine Motorway fast and smooth with few undulations, and the course file measures 460 m of climbing over 91.4 km. That climbing comes in seven short rises and many small rolls. The steepest rise is 166 m at 6.6 percent past kilometre 82.
- What water temperature should I expect at Mooloolaba Beach?
- The organiser logged 20 C in both 2025 and 2024 and has no reading for 2026. The swim is one counter-clockwise ocean lap with a rolling start. The wetsuit decision is not on the course page, so check it in race week.
- How many laps is the IRONMAN 70.3 Sunshine Coast run?
- Two. Each lap runs from The Spit and Point Park along the Mooloolaba Boardwalk and Esplanade, over Alexandra Headland Hill to Cotton Tree and back. The file climbs 110 m in total, and its steepest stretch, 231 m at 4.3 percent, comes in the final kilometre and a bit.
- How long is the season on this page?
- The illustrative season runs 24 weeks, five developmental blocks and a two-week taper. It is built from the course alone. A member's season starts from their own numbers and can be longer.
Course data from the organiser’s published files, analysed 24 Sept 2026 by engine 1, demand model 4. Reference times are simulated for a peer band at a stated reference athlete and are not a prediction for anyone. Nothing on this page is medical advice.
IRONMAN® and IRONMAN 70.3® are registered trademarks, and 5150 is a trademark, of World Triathlon Corporation. Nymiva is an independent training platform and is not affiliated with, sponsored by or endorsed by World Triathlon Corporation. Course data is read from the organiser’s public course pages for the purpose of describing the event.