Triathlon Finish Time Calculator

Enter your swim pace, bike speed and run pace to calculate your triathlon finish time.

1500m swim · 40 km bike · 10 km run

:min : sec / 100m
:min : sec / km

Finish Time

3:10:30

Olympic triathlon

🏊Swim(16%)
30:00
→T1
2:30
🚴Bike(50%)
1:36:00
→T2
2:00
🏃Run(31%)
1:00:00

T1/T2 based on World Triathlon averages (2.5 min / 2 min). Actual times vary.

How it works

The calculation

Finish time = swim time + T1 + bike time + T2 + run time.

  • Swim: pace per 100m × (swim distance ÷ 100)
  • Bike: (bike distance ÷ speed) × 3600 seconds
  • Run: pace per km × run distance in km
  • T1/T2: World Triathlon average times for each distance

Imperial inputs are converted before calculation. Swim pace per 100yd is multiplied by 1.0936 to get pace per 100m. Run pace per mile is divided by 1.60934 to get per km. Bike speed in mph is multiplied by 1.60934.

Use your race-day average speed for bike — this is typically 5–10% slower than your training speed due to fatigue, nutrition stops and course variation.

Frequently asked questions

How do I calculate triathlon finish time?

Add your swim time (pace × distance ÷ 100), bike time (distance ÷ speed × 60), run time (pace × distance), and transition times. For an Olympic triathlon at 2:00/100m swim, 30 km/h bike, 6:00/km run: 30min swim + 80min bike + 60min run + 4.5min transitions = 2:54:30 total.

What is a good triathlon finish time for a beginner?

For a Sprint triathlon (750m/20km/5km), a good beginner finish time is 1:30–2:00. For an Olympic distance (1500m/40km/10km), expect 3:00–4:00 for your first race. These times assume basic fitness with 3–4 months of specific triathlon training.

How long does each discipline take in a triathlon?

In a typical Olympic triathlon for an intermediate athlete: swim 25–35 minutes, T1 2–3 minutes, bike 1:10–1:30, T2 2–3 minutes, run 50–65 minutes. The bike leg accounts for roughly 50–55% of total race time.

How much time do transitions add to triathlon finish time?

World Triathlon average transition times: T1 (swim to bike) 2–4 minutes, T2 (bike to run) 1.5–3 minutes. Fast transitions of 60–90 seconds are possible with practice. Over an Ironman, slow transitions can add 10–15 minutes.

Does swim pace per 100m or per 100yd matter?

1:45 per 100 yards is approximately 1:55 per 100 metres — about 10 seconds per 100 slower. Open water courses use metres. Pool training often uses yards in the US. Toggle to imperial mode to enter pace per 100yd.

What bike speed should I use for triathlon calculation?

For planning, use your average speed including climbs, not your flat-road speed. Most amateur triathletes average 25–30 km/h on an Olympic course. On a 70.3, expect 28–33 km/h for intermediate athletes with a road or triathlon bike.

How do I calculate my run pace for triathlon?

Your triathlon run pace will be 15–30 seconds per km slower than your standalone 10km race pace, due to accumulated fatigue from swimming and cycling. For an Ironman marathon, expect to run 45–90 seconds per km slower than your open marathon pace.

What are T1 and T2 in triathlon?

T1 is the first transition — from swimming to cycling. T2 is the second transition — from cycling to running. Both transitions are timed and count toward your official finish time. Transition areas are set up before the race with your bike, helmet, shoes, and run gear.