IRONMAN Cozumel
Course breakdown, historical weather, field analysis, and pacing notes.
A fast, flat course in Cozumel
Cozumel, Mexico · November 22, 2026
IRONMAN Cozumel takes place in Cozumel, Mexico on November 22, 2026. The full-distance course covers a 3.80 km swim, 181.7 km bike with 48m of climbing, and a 42.0 km run. Expect warm conditions — pacing and cooling strategy matter here.
- Swim
- 3.8 km
- Ocean
- Bike
- 181.7 km
- ↑289m · Flat
- Run
- 42.0 km
- ↑28m · Flat
- Air Temp
- 20–29°C
- Water Temp
- 27°C
- Wind
- 14 km/h
- NE
Swim Course
Warm water swim over 3.80 km
Athletes face a 3.80 km swim in ocean conditions. Water temperatures are above the wetsuit-legal threshold, meaning a non-wetsuit swim.
- Ocean swim
- 27°C average water temperature
- 3 sharp turns
Bike Course
A fast, flat 181.7 km ride
The bike course covers 181.7 km across flat terrain with 48m of total climbing.
- 48m total elevation gain
- 0.3 m/km average gradient
- 44 sharp turns
- Flat terrain profile
Run Course
A fast, flat 42.0 km run
The run covers 42.0 km with 29m of climbing.
- 29m total elevation gain
- 0.7 m/km average gradient
- 5 U-turns
- 42 sharp turns
- Flat terrain profile
Race Day Conditions
Hot conditions — pacing and cooling matter
Based on historical averages, expect temperatures around 26°C on race day. Ice, sponges, and a conservative opening pace will pay dividends in the run. Winds average 14 km/h.
Race Field Insights
How the Field Performs
Aggregated from 7,125 finishers (2021–2025)
- Total Starters
- 7,988
- Finishers
- 7,125
- DNF Rate
- 10.6%
- Years of Data
- 2021–2025
- Median Finish
- 12h 17m
Finish Time Distribution
How the Median Finisher Spends Race Day
What Each Pace Looks Like
Fast | Solid | Median | Back of Pack | Slow (P90) | |
|---|---|---|---|---|---|
| Swim | 52m 20s | 58m 16s | 1h 06m | 1h 16m | 1h 26m |
| Bike | 5h 00m | 5h 30m | 6h 04m | 6h 41m | 7h 17m |
| Run | 3h 38m | 4h 12m | 4h 57m | 5h 47m | 6h 31m |
| Finish | 9h 38m | 10h 49m | 12h 17m | 13h 48m | 15h 10m |
Plan IRONMAN Cozumel with Keiro
Get a complete pacing strategy for every discipline — built from this course, forecast weather, and your fitness.
Independent analysis. KeiroLabs is not the event organizer and is not affiliated with the race organizer.