IRONMAN 70.3 Boulder

IRONMAN 70.3 Boulder: who races and how fast

IRONMAN 70.3 Boulder's field: finish, swim, bike and run time spreads by age group, against the typical field on the same course and day.

Next race 12 June 2027 in Boulder, Colorado, USA; 60 World Championship slots; a course 1.3% slower than the median one; 1,450 finishers in 2026.

Every age group, the swim, bike and run, and your own result: free with an account. Sign up free

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