Duathlon Pace Calculator

Set a goal time for each leg to see the pace you need to hold — and your total duathlon finish time.

Pick a race distance and set a goal time for the first run, the bike, and the second run. The calculator shows the pace you need on each leg — run pace per mile and bike speed — and adds it all up, with your transitions, into a total finish time. The second run is usually slower off the bike, so give it its own honest target.

Select Your Distance & Goals

::
Run 1DistancekmGoal time
Transition 1Time
BikeDistancekmGoal time
Transition 2Time
Run 2DistancekmGoal time

Enter each transition time as minutes:seconds (ex - 2:30), and each sport time as hours:minutes:seconds (1:15:00).

Duathlon Race Summary

Finish time
1:30:00
Run 1 pace
6:00/ km
Bike pace
30.0km/h
Run 2 pace
6:24/ km
Race Breakdown
Run46:00 (51%)Bike40:00 (44%)Transitions4:00 (4%)

Edit Your Pacing

Edit pacing details below and your finish time & race summary will update accordingly.

Run 1Split30:00Pace/ kmElapsed0:30:00
Transition 1SplitElapsed0:32:00
BikeSplit40:00Pacekm/hElapsed1:12:00
Transition 2SplitElapsed1:14:00
Run 2Split16:00Pace/ kmElapsed1:30:00

Save your pace calculator

Enter your email, and we'll send your pace calculator and future duathlon races over.

From Endurance Grid

About This Sport

Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.

With duathlon, two disciplines push you in completely different ways. Duathlon rewards athletes who refuse to specialize — and if you've ever wanted to know what your legs can do after an all-out bike leg, this is your sport.

Read the Guide

Duathlon

Run, bike, run. The multi-sport format without the swim. Two disciplines, one race — a great bridge between running and triathlon.

Race Near You

Find a Duathlon race near you

Enter a city or ZIP to see the closest upcoming duathlon races to line up for.

Upcoming Duathlon races

Aug–Sep
28–13
Fri–Sun
DuathlonTriathlonSwimRun
Mini Maniac Youth Triathlon
1 William Floyd Parkway, Shirley, NY
Avg 75° / 58°·55 ft city elevation
Aug
29
Sat
DuathlonTriathlonAquabike
Go Girl Triathlon
Red Bridge Park, Cicero, IN
Avg 83° / 58°·848 ft city elevation
Aug
29
Sat
DuathlonTriathlon
Swan Lake Grit-N-Gravel Triathlon
17463 County Highway 29, Fergus Falls, MN
Sprint · Olympic
Avg 77° / 55°·1,159 ft city elevation
Aug
29
Sat
DuathlonTriathlonAquabike
Martinsburg Sprint & Super Sprint 
War Memorial Park, Martinsburg, WV
Sprint
Avg 87° / 65°·511 ft city elevation
Aug
29
Sat
DuathlonTriathlonAquabike+2
Santa Barbara Triathlon & Beach Festival
1118 E Cabrillo Blvd., Santa Barbara, CA
5K · 500m · 1500m
Avg 78° / 60°·121 ft city elevation
Aug
29
Sat
DuathlonTriathlon
Gator Gauntlet Off-road Triathlon
107 Sutherland Road, Lake Charles, LA
Sprint
Avg 91° / 71°·10 ft city elevation
Aug
29
Sat
Duathlon
Finger Lakes Duathlon Watkins Glen
Watkins Glen International, Watkins Glen, NY
Avg 75° / 53°·1,043 ft city elevation
Aug
29
Sat
Duathlon
Yak-A-Du Kayak Duathlon
Wolf River Canoes, Long Beach, MS
Sprint
Avg 89° / 74°·19 ft city elevation
Aug
29–30
Sat–Sun
DuathlonTriathlonRunning
Lago Mar MultiSport Festival
12930 Crystal View Blvd, Texas City, TX
5K · Sprint
Avg 91° / 79°·1 ft city elevation
Aug
30
Sun
DuathlonTriathlon
Hero Hustle Sprint Triathlon & Duathlon
120 Schram Drive, Manchester, IA
Avg 79° / 55°·936 ft city elevation

Frequently Asked Questions

How do I calculate my duathlon splits?
Set a goal time for each leg — the first run, the bike, and the second run — and the calculator shows the pace that time requires (run pace per mile, bike speed), then adds your legs and transitions into a total finish time. Adjust any leg and the total updates.
Why is the second run its own leg?
A duathlon runs run-bike-run, and the second run usually comes in slower than the first because your legs are loaded from the bike. Giving it its own goal time lets you plan a realistic pace rather than assuming you can repeat your opening run.
What race distances does this duathlon pace calculator handle?
This duathlon pace calculator covers the standard duathlon distances, like Sprint and Olympic. You can adjust your own goal time for each leg. The calculator can be used to track pacing for any duathlon distance to help you track your goal time, pace by split, and split time.