Ironman Frankfurt — Course Guide

Ironman (Full Distance): 3800m / 180km / 42.2km

🏊 Swim

Distance 3800m

Water Type lake

Format open-water

Water Temperature 22°C

Wetsuit conditional

Current calm

Langener Waldsee — a clear, calm forest lake south of Frankfurt. One-lap rectangular course with excellent sighting lines. Water temperature around 22°C. One of the most swimmer-friendly Ironman swim courses.

🚴 Bike

Distance 180km

Elevation Gain ↑1000m

Highest Point 533m

Profile rolling

Surface road

Topology out-and-back

Drafting Non-drafting

Fast rolling course through the Taunus hills and Rhine-Main countryside. 1,000m of climbing spread across gentle rollers — no major climbs but no flat sections either. Excellent road surfaces and well-organized course. One of the fastest Ironman bike courses in Europe.

🏃 Run

Distance 42.2km

Elevation Gain ↑150m

Profile flat

Surface road

Topology out-and-back

Four-lap marathon through Frankfurt's Stadtwald (city forest) and along the Main riverbank. Shaded forest sections provide relief from summer heat. The finish in the Römerberg — Frankfurt's medieval town square — is one of the most atmospheric in Ironman racing.

Transition Areas

T1 — Swim → Bike

T2 — Bike → Run

⚠ T1 and T2 are in different locations — plan logistics accordingly · Surface: grass

📈 Elevation Profile

Swim

3800m

lake · open-water

Bike

↑1000m

rolling · 180km

Run

↑150m

flat · 42.2km

23°C

Air Temp

22°C

Water Temp

55%

Humidity

12 km/h

Wind

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