IRONMAN 70.3 · Vitoria-Gasteiz · 11 Jul 2027
How to train for IRONMAN 70.3 Vitoria-Gasteiz
The organiser sells Vitoria-Gasteiz as a personal-best course, and the terrain agrees. A lake swim, a single loop of Álava roads and a two-loop run through the city, on a course the file reads as 96 percent flat. What the promise leaves out is July in the Basque Country. The organiser's own weather table shows highs of 32 C, 33 C and 35 C over the last three editions.
So the course is fast and the day is not. A Trained athlete finishes in 5:50:34, and nothing on the road will slow them down except the air they run in.
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.
- Swim1.9 km7 m upCourse file
- Bike90 km469 m upCourse file
- Run21.2 km147 m upCourse file
The swim is one loop of 1.9 km in Ulibarri-Gamboa lake, which locals call Landa, inside the Landa Provincial Park outside the city. The organiser calls it a flat lake with drinking quality water, and a short run takes you into the first transition on the grass of the park.
The bike is a single loop of 90 km through the towns of the Álava region, sharing a section of road with the Camino de Santiago. It does not return to the lake. It ends in the centre of the city, at the second transition on Calle Olaguíbel. The organiser quotes 500 m of elevation gain and the file measures 469 m.
Read the profile and it is a chain of long flat pieces joined by short rises and drops. The steepest rise comes early, 210 m at 6.7 percent just after kilometre 7. Seven flat segments on the bike run longer than 6 km each, the longest two of them 11.8 km and 11.9 km, and the second of those carries you into town. The organiser labels the bike rolling. The file says it barely rolls at all.
The run is two loops through the centre of Vitoria-Gasteiz, finishing in the historic Plaza España. The organiser quotes 240 m of total elevation. The file measures 147 m over 21.2 km and reads almost all of it as flat.
Course shape by distance
- Flat 96%
- Climbing 1%
- Descending 3%
The longest stretches
- Bike, climbing0.21 km1% of the bike
- Run, flat13 km61% of the run
- Run, flat7.78 km37% of the run
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.
Aerobic endurance, then muscular endurance, and the bike first. The demand model scores them 85 and 81 on the bike, with threshold capacity at 70 and both durability scores at 66 behind them. The bike is 52 percent of a Trained athlete's day, so the five largest demands on the course are bike demands and the run's aerobic endurance comes sixth.
Ask the engine for a session from this bike file and you see how little the terrain asks. Five climbs worth rehearsing, half a minute each in Zone 5, with almost 27 minutes of easy riding between them. That is two and a half minutes of hard work in 90 km. High-intensity capacity reads 48 on the bike and strength and force 45.
The swim carries the one score that stands out. Technical skill reads 66 in the water, higher than on either other leg, and the illustrative season below gives the swim's second block to technique.
Now the bands. A Trained athlete swims 38:12, rides 3:02:16 at 182 W and runs 2:00:06. The Competitive band finishes in 5:06:19 from 4.15 W/kg at 75 kg and 4:20 /km threshold pace, 21 minutes quicker on the bike and 18 on the run. On roads this flat the bike difference is steady power, 249 W against 182 W, and almost none of it is bought on a climb.
Heat is the condition. The lows in the organiser's table run from 14 C to 16 C, so the swim and the first hour of the bike happen in a mild morning. The run happens later, in the city, on the same days that reached 35 C and 33 C.
- Aerobic endurance85
- Muscular endurance81
- Threshold capacity70
- Technical skill66
- Aerobic durability65
- Threshold durability65
- Fueling resilience55
- High-intensity capacity40
- Anaerobic capacity25
- Strength / force20
- Environmental resilience15
- 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 holds two readings of the same twelve dimensions side by side. The course's reading comes from the files the organiser publishes. The athlete's comes from their thresholds and their connected training history, with a note on each score saying what it was built from and how far it can be trusted. Where the course asks for more than the athlete shows, there is a gap, and each gap is weighted by the share of the day it fills.
No reader stands behind this page, so its season makes the plainest assumption, that the gaps fall where Vitoria-Gasteiz demands most. It lays out 24 weeks in 5 developmental blocks before a two-week taper. Aerobic endurance leads the first block in all three sports. In the second, the bike works on aerobic durability, the run on threshold durability, and the swim on technical skill, which is this course's own mark on the plan. Threshold capacity leads the third block, muscular endurance the fourth, and aerobic endurance returns for the fifth. A member's season starts from their own numbers and will reorder all of it around their gaps.
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 Vitoria-Gasteiz 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
- SupportRun muscular endurance
- SupportBike muscular endurance
- SupportSwim muscular endurance
- SupportBike threshold capacity
- SupportRun threshold capacity
- SupportSwim threshold capacity
- SupportBike aerobic durability
- SupportRun threshold durability
- SupportSwim technical skill
- Weeks 6 to 9Foundation 2Closes with a recovery week
- PriorityBike aerobic durability
- PriorityRun threshold durability
- PrioritySwim technical skill
- SupportBike aerobic endurance
- SupportRun aerobic endurance
- SupportSwim aerobic endurance
- SupportRun muscular endurance
- SupportBike 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
- SupportRun muscular endurance
- SupportBike muscular endurance
- SupportSwim muscular endurance
- SupportBike aerobic durability
- SupportRun threshold durability
- SupportSwim technical skill
- Weeks 14 to 17Event shaping 1Closes with a recovery week
- PriorityRun muscular endurance
- PriorityBike muscular endurance
- PrioritySwim muscular endurance
- SupportBike aerobic endurance
- SupportRun aerobic endurance
- SupportSwim aerobic endurance
- SupportBike threshold capacity
- SupportRun threshold capacity
- SupportSwim threshold capacity
- SupportBike aerobic durability
- SupportRun threshold durability
- SupportSwim technical skill
- Weeks 18 to 21Event shaping 2Closes with a recovery week
- PriorityBike aerobic endurance
- PriorityRun aerobic endurance
- PrioritySwim aerobic endurance
- SupportRun muscular endurance
- SupportBike muscular endurance
- SupportSwim muscular endurance
- SupportBike threshold capacity
- SupportRun threshold capacity
- SupportSwim threshold capacity
- SupportBike aerobic durability
- SupportRun threshold durability
- SupportSwim technical skill
- 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
5× course-matched climbs
0.5 min at Zone 5, then 0.5 min at Zone 5, then 0.5 min at Zone 5, then 0.5 min at Zone 5, then 0.5 min at Zone 5, 26.8 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
- 135 min
- Trains anaerobic capacity
- Supports strength force
- Supports muscular endurance
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 | 0:45:05 | 3:17:51 | 2:24:25 | 6:37:21 |
| Trained1:51 /100m critical swim speed · 3.03 W/kg at 75 kg · 5:06 /km threshold pace | 0:38:12 | 3:02:16 | 2:00:06 | 5:50:34 |
| Competitive1:36 /100m critical swim speed · 4.15 W/kg at 75 kg · 4:20 /km threshold pace | 0:33:03 | 2:41:14 | 1:42:02 | 5:06:19 |
| Elite1:26 /100m critical swim speed · 5.27 W/kg at 75 kg · 3:50 /km threshold pace | 0:29:36 | 2:27:15 | 1:30:16 | 4:37:07 |
Pacing plan
- 0 km0.2%29.8 km/h14:38
- 7.27 km6.7%10.2 km/h1:14
- 7.48 km0.2%29.8 km/h17:09
- 16 km3%18 km/h0:46
- 16.2 km0.4%28.8 km/h4:14
- 18.3 km-3.1%45.8 km/h0:20
- 18.5 km-0.2%31.8 km/h17:42
- 27.9 km-3.1%45.8 km/h0:13
24 more segments in the full plan.
- Run: reach 4:20 /km and this course gives back 44:15.
Where it is decided
On the first 13 km of the run, in whatever the day has become.
The run file reads as two long flat blocks. The first, 13.0 km without a change of gradient, holds 61 percent of the run leg, and it covers the whole first loop and the start of the second. For a Trained athlete it begins close to four hours after the swim start. A Trained athlete runs 2:00:06 from an input of 5:06 /km threshold pace. That time assumes the pace holds. On a day that reached 35 C, it holds only for the runner who left something on the bike.
That is why the bike matters here in a way the profile hides. On flat road the bike clock barely notices whether three hours at 182 W were ridden evenly or in bursts. The run notices. The difference shows up in the first kilometres after Calle Olaguíbel, and it grows through that 13 km block, where there is no climb to blame for it.
Getting it wrong
Seven kilometres in, the first mistake is waiting. The steepest rise of the day, 210 m at 6.7 percent, arrives while the ride still feels new. It holds under 1 percent of the bike leg. Riders attack it because it is the only thing in sight worth attacking, and pay for it over the rest of the ride.
The second is the last 11.9 km. The road drops toward the city, the longest flat piece of the whole bike opens in front of you, and Calle Olaguíbel is close enough to feel. Riders who held their number for 78 km push here to finish the bike on a high. It is the worst place on the course to spend, because the run starts at the end of it.
The third is the target time. The organiser promises personal-best potential, and athletes arrive with a number built on a cooler race. Hold that pace through the first loop in July heat and the second loop takes the time back with interest. The course is fast. The heat decides how much of that speed you can use.
Conditions on the day
- 2026high 35 C, low 16 C
- 2025high 33 C, low 14 C
- 2024high 32 C, low 15 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 Vitoria-Gasteiz 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
- 5:50:34
- Of the day on the bike
- 52%
- Dimensions scored per leg
- 12
- Season runway shown
- 24 wk
Questions people ask
- How hilly is the IRONMAN 70.3 Vitoria-Gasteiz bike course?
- Barely. The organiser quotes a single 90 km loop with 500 m of elevation gain, and the file they publish measures 469 m. The steepest sustained rise is 210 m at 6.7 percent, just after kilometre 7, and it holds under 1 percent of the bike leg.
- How hot does IRONMAN 70.3 Vitoria-Gasteiz get?
- The organiser logged highs of 35 C in 2026, 33 C in 2025 and 32 C in 2024, with lows between 14 C and 16 C. The organiser publishes no water temperature history for the lake.
- Where is the swim?
- In Ulibarri-Gamboa lake, known locally as Landa, in the Landa Provincial Park outside Vitoria-Gasteiz. It is one loop of 1.9 km in a flat lake the organiser describes as drinking quality water. The wetsuit decision is not on the organiser's course page, so check it in race week.
- How many loops is the run?
- Two, through the centre of Vitoria-Gasteiz, finishing in Plaza España. The organiser quotes 240 m of total elevation and the file measures 147 m over 21.2 km.
Course data from the organiser’s published files, analysed 23 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 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.