Free · No signup · Built for athletes

Train smarter.
Race faster.

Pace calculators, race predictors, pace charts, and training tools for runners, cyclists, swimmers, and triathletes.

Open pace calculator Triathlon calculator
🏃 Running 🚴 Cycling 🚶 Walking 🏊 Swimming 🏅 Triathlon

Tools

Everything you need

Free calculators built for serious athletes. No ads in the way, no account required.

⏱️
Live
Pace Calculator
Calculate pace, time, distance, and speed. Enter any two values and get the rest instantly.
Running Cycling Walking Swimming
↗
🏅
Live
Triathlon Calculator
Predict your finish time from split paces — or reverse-engineer the paces you need to hit a goal time.
Sprint Olympic 70.3 Ironman
↗
🎯
Live
Race Predictor
Give us a recent race result and we'll predict your finish times at every standard distance using the Riegel formula.
Running Cycling
↗
📊
Live
Split Calculator
Enter a goal time and get even, negative, or positive splits — a full mile-by-mile table to take to race day.
Running Cycling
↗
🗺️
Live
Race Planner
Upload a course GPX file and get a mile-by-mile race plan based on elevation and grade-adjusted pace.
Running Trail Any course
↗
❤️
Coming soon
Training Zones
Find your easy, tempo, threshold, and VO₂ max pace zones based on a recent race or time trial.
Running Cycling

Pace charts

Reference tables for every distance

Click any finish time to see your required pace per mile and km. Every common race distance covered.

🏃
5K
14:00 to 50:00 — pace per mile and km for every finish time.
↗
🏃
10K
28:00 to 1:40:00 — with 5K split shown for every row.
↗
🏃
Half marathon
1:20 to 3:30 — with 10K checkpoint for every goal time.
↗
🏃
Marathon
2:30 to 6:00 — with Boston qualifying standards highlighted.
↗
⚡
Treadmill
3.0 to 12.0 mph converted to pace per mile and km.
↗
100%
Free, always
Every tool on this site is free to use. No paywalls, no trial periods, no account required.
10
Tools & charts
Five calculators and five pace charts — running, cycling, swimming, walking, and triathlon all covered.
0
Signups needed
Open a tool, enter your numbers, get your answer. Nothing to install, no email required.

By sport

Jump straight in

Go directly to the calculator configured for your sport.

🏃
Running
Pace per mile or km, race distances from 5K to marathon, treadmill conversions.
🚴
Cycling
Speed in mph/kph, ride distances from 10 miles to a century.
🚶
Walking
Casual stroll to power walk — pace, time, and distance for every level.
🏊
Swimming
Pace per 100m or 100yd, pool to open water distances, triathlon swim splits.