Combine swim, bike, run and transition times to estimate your triathlon finish time.
Triathlon and Ironman time calculator
Add swim, bike, run and transition times for a combined estimate.
Why this calculator is useful
Add swim, bike, run and transition estimates to understand a possible overall finish time.
How to use it
- Enter a recent, representative result or your planned race details, using the units shown beside each field.
- Select Calculate and review the result, including the assumptions and limitations shown.
- Use the result as a planning aid, compare it with how you feel, and recalculate when your inputs change.
Results are estimates, not guarantees. Fitness, recovery, weather, terrain, elevation and course conditions can all change the outcome.
Related running resources
All running calculators · Running guides · Training plans · UK race calendar · Triathlon and Ironman guide
Frequently asked questions
What does this calculator include?
It adds the swim, bike, run and both transition times that you enter.
Does it include course conditions or cut-off times?
No. It is an arithmetic estimate, not an official race prediction. Check the event guide for course distances and cut-offs.
Are Ironman and 70.3 distances identical at every event?
Course measurements and conditions can vary. Always confirm the distances and rules on the specific event organiser’s website.