IRONMAN 70.3 Jönköping
Course breakdown, historical weather, and field analysis.
Swedish lakeside racing — Vättern's shores and Småland forests
· July 5, 2026
IRONMAN 70.3 Jönköping takes athletes to the southern shore of Lake Vättern — Sweden's second largest lake. A lake swim, a rolling bike through the Småland countryside, and a run along the Jönköping waterfront. This is Scandinavian triathlon at its best — pristine nature, efficient organisation, and a passionate Swedish triathlon community.
- Swim
- 1.9 km
- Lake
- Bike
- 90.2 km
- ↑940m · Rolling
- Run
- 21.2 km
- ↑223m · Rolling
- Air Temp
- 12–25°C
- Water Temp
- 17°C
- Wind
- 18 km/h
- S
Swim Course
Lake Vättern swim — Sweden's second largest lake
The swim takes place in Lake Vättern, one of the largest and deepest lakes in Europe. Water temperatures in early July are around 16–19°C — wetsuit-legal and on the cooler side. The lake is famous for its crystal-clear water and can be choppy in windy conditions due to its vast size. The Jönköping waterfront provides the start and finish.
- Crystal-clear water in one of Europe's largest lakes
- Cool water at 16–19°C — good wetsuit recommended
- Potential chop on windy days due to lake size
- Waterfront start and finish in Jönköping
Bike Course
Rolling roads through the Småland forests
The bike course heads into the rolling Småland countryside — a landscape of forests, lakes, and red-painted farmhouses. The terrain is genuinely rolling with moderate climbing, and the smooth Swedish roads make for pleasant riding. The route passes through quintessentially Swedish scenery and is well-supported by local communities along the way.
- Rolling Småland countryside
- Forests, lakes, and traditional Swedish landscapes
- Moderate climbing on smooth Swedish roads
- Well-supported by local communities
Run Course
Lakeside run along the Jönköping waterfront
The run follows the shores of Lake Vättern through Jönköping. The terrain is relatively flat along the waterfront with lake views throughout. The Scandinavian summer daylight means excellent visibility, and the Swedish triathlon community provides warm, enthusiastic support. The finish area along the waterfront creates a festive atmosphere.
- Flat lakeside running with Vättern views
- Long Scandinavian summer daylight
- Enthusiastic Swedish crowd support
- Waterfront finish area
Race Day Conditions
Swedish summer — long days, mild temperatures
Early July in southern Sweden offers pleasant summer conditions. Air temperatures range from 14–24°C with long daylight hours. The lake moderates temperatures, and conditions are generally comfortable for racing. Rain is always possible in Scandinavia, but summer weather in Jönköping is typically mild and manageable.
Race Field Insights
How the Field Performs
Aggregated from 6,666 finishers (2021–2025). Some splits use a reduced year range — see footnotes.
- Total Starters
- 6,946
- Finishers
- 6,666
- DNF Rate
- 3.9%
- Years of Data
- 2021–2025
- Median Finish
- 5h 51m
Finish Time Distribution
How the Median Finisher Spends Race Day
What Each Pace Looks Like
Fast | Solid | Median | Back of Pack | Slow (P90) | ||
|---|---|---|---|---|---|---|
| Swim | 32m 39s | 36m 49s | 41m 28s | 46m 56s | 52m 29s | * |
| Bike | 2h 28m | 2h 40m | 2h 55m | 3h 12m | 3h 29m | |
| Run | 1h 35m | 1h 45m | 1h 59m | 2h 16m | 2h 34m | |
| Finish | 4h 50m | 5h 18m | 5h 51m | 6h 28m | 7h 05m | * |
* Swim data based on 2022–2025 only (earlier years had shortened courses)
* Finish data based on 2022–2025 only (earlier years had course changes in a dependent split)
Plan IRONMAN 70.3 Jönköping with Keiro
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