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

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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

Oct
17
Sat
DuathlonTriathlonAquabike
Rev3 Mighty Matapeake
2010 Sonny Schulz Blvd, Stevensville, MD
Sprint
Avg 67° / 50°·9 ft city elevation
Oct
17
Sat
DuathlonTriathlonAquabike
Beach Girl Triathlon
19320 W. San Luis Pass Road, Galveston, TX
Sprint
Avg 82° / 68°·-2 ft city elevation
Oct
17–18
Sat–Sun
DuathlonRunningTrail Running+1
Lake Hodges Trail Festival
Piedras Pintadas Trailhead, San Diego, CA
1 Mile · 5K · 10K · 15K · 50K · Olympic
Avg 75° / 61°·352 ft city elevation
Oct
17–18
Sat–Sun
DuathlonTriathlonAquabike+2
AdventHealth Great Floridian Multisport Festival
100 3rd Street, Clermont, FL
5K · 15K · Sprint · Olympic
Avg 86° / 67°·95 ft city elevation
Oct
17–18
Sat–Sun
DuathlonTriathlonAdventure+1
Brick House Multi-Sport Festival! Featuring: Triathlon, Duathlon, Kids Tri, & Adventure Race!
18135 FM 362, Navasota, TX
Sprint
Avg 82° / 56°·232 ft city elevation
Oct
18
Sun
DuathlonTriathlonAquabike+3
2026 Cal Tri LA - 10.18.26
Dockweiler State Beach - Parking Lot 2, Playa Del Rey, CA
5K · 10K · Sprint · Olympic · 500m · 1500m
Avg 74° / 57°·100 ft city elevation
Oct
18
Sun
DuathlonTriathlonAquabike+2
Lake Evans Triathlon, 5K & 10K
Lake Evans, Bakersfield, CA
5K · 10K · Sprint · Olympic
Avg 79° / 53°·379 ft city elevation
Oct
18
Sun
Duathlon
Lake Hodges Trail Duathlon
Piedras Pintadas Trailhead, San Diego, CA
Olympic
Avg 75° / 61°·352 ft city elevation
Oct
18
Sun
DuathlonTriathlonAquabike
The Bill Bone Tropical Triathlon
Lake Worth Beach Park, Lake Worth, FL
Sprint
Avg 85° / 72°·18 ft city elevation
Oct
18
Sun
Duathlon
Mohawk Towpath Byway Duathlon
660 Riverview Rd, Rexford, NY
Sprint
Avg 61° / 40°·328 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.