Triathlon Calculator
Free triathlon calculator for Sprint, Olympic, Half Ironman (70.3), and Ironman. Get total finish time from swim, bike, and run paces.
Olympic Triathlon
Swim 1.5km • Bike 40km • Run 10km
Estimates only. Training loads, paces and body-composition figures vary a lot between individuals, and none of this is medical or coaching advice. Talk to a professional before changing how you train.
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Plan Your Triathlon Race Time
Calculate your estimated triathlon finish time based on your swim, bike, and run paces. Plan for all major triathlon distances including Sprint, Olympic, Half Ironman (70.3), and full Ironman races. Account for transition times to get an accurate race prediction.
Understanding Triathlon Distances
Triathlon combines swimming, cycling, and running in sequence. Standard distances include Sprint (750m swim, 20km bike, 5km run), Olympic (1.5km/40km/10km), Half Ironman 70.3 (1.9km/90km/21.1km), and full Ironman 140.6 (3.8km/180km/42.2km). Transitions (T1 and T2) are timed portions between disciplines.
Total Time Calculation
Total = Swim + T1 + Bike + T2 + RunHow to Use This Calculator
Select your race distance (Sprint, Olympic, Half, or Ironman)
Choose calculation method: enter paces/speeds or leg times
For pace mode: Enter swim pace per 100m, bike speed, and run pace
For time mode: Enter total minutes for each leg
Enter estimated transition times (T1 and T2)
View your projected finish time and leg breakdown
Typical Triathlon Finish Times
Sprint Triathlon
Beginners: 1:30-2:00, Intermediate: 1:10-1:30, Advanced: Under 1:10. Great starting race for new triathletes.
Olympic Triathlon
Beginners: 3:00-3:30, Intermediate: 2:15-3:00, Advanced: Under 2:15. The standard international race distance.
Half Ironman (70.3)
Beginners: 6:00-7:00, Intermediate: 5:00-6:00, Advanced: Under 5:00. Cutoff typically 8:30.
Ironman (140.6)
Beginners: 13:00-15:00, Intermediate: 11:00-13:00, Advanced: Under 11:00. Cutoff is 17 hours.
Why Use a Triathlon Calculator?
Set Realistic Goals
Know your expected finish time based on current fitness to set achievable race goals.
Plan Pacing Strategy
Break down the race to pace each discipline appropriately for your target time.
Optimize Transitions
Understand how T1 and T2 times impact your overall finish time.
Track Progress
Compare projected times as your training improves across all three disciplines.
Frequently Asked Questions
Beginners: 3-5 minutes each. With practice: 1-2 minutes for T1, 1-2 minutes for T2. Elite athletes: under 1 minute. Fast transitions can save 5-10 minutes over a race.
Beginners: 2:30-3:00/100m, Intermediate: 1:45-2:15/100m, Advanced: 1:20-1:45/100m. Open water is typically 10-20% slower than pool pace.
Bike at 75-85% of your maximum sustainable power/effort to save energy for the run. Going too hard on the bike is the most common mistake—your run will suffer significantly.
Nutrition! For races over 2 hours, you need to consume 200-300 calories/hour. Practice eating while cycling. Many athletes fail due to poor fueling, not fitness.