IRONMAN 70.3 Boise

IRONMAN 70.3 Boise course: how fast are the swim, bike and run?

IRONMAN 70.3 Boise: 1.6% slower than the median course (bike 2.9% slower, run 0.3% slower, swim 8.3% slower). The same athletes' times compared across every course, and a time predictor.

Next race 24 July 2027 in Boise, ID, USA; 60 World Championship slots; a course 1.6% slower than the median one; 1,170 finishers in 2026.

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• Slots and qualifying times
• How 2026 played
• 2026 results
• Who races
• Course speed
• Over the years
• Every race