Running Pace Calculator
Calculate your running pace, finish time, or distance. Enter any two of the three values to find the third. Supports km and miles.
Did this tool work for you?
How to use this calculator
Enter any two of: distance, time, and pace — and the third is calculated automatically.
- 1
Enter your run distance in km and your finish time in minutes and seconds.
- 2
The calculator shows your pace per km and per mile, speed, and projected race finish times.
- 3
Use it to plan race-day pacing strategy for common distances.
Frequently asked questions
What is a good running pace?
It depends entirely on fitness level and distance. A recreational 5K runner might pace at 6:00–7:00 /km. Serious club runners target 4:30–5:00 /km. Elite marathon runners run under 3:00 /km. Focus on your own improvement, not arbitrary benchmarks.
How do I calculate my marathon finish time?
Use your current pace and the marathon distance (42.195 km). The calculator projects finish time automatically. Add 5–10% for fatigue in the second half (the "positive split" reality) unless you've trained for a negative split.
What is negative split running?
Running the second half of a race faster than the first half. It is the most efficient pacing strategy for most distances and is used by world-record holders. It requires restraint in the early miles when you feel fresh.
Running Pace Calculator — Speed, Finish Time & Race Projections
Pace vs speed: which should you track?
Runners typically think in pace (time per km or mile) rather than speed (km/h) because pace directly tells you how long each segment of a race will take. Speed is more useful for comparing to cycling or other sports. GPS watches display both; use whichever helps you hit your target splits.
Common race pacing strategies
Even pace: maintain the same pace throughout — good for beginners. Negative split: run the second half slightly faster — used by most elite runners. Positive split: start fast, slow down — common but generally less efficient due to early glycogen depletion. Interval training improves your ability to sustain race pace over the full distance.
Learn more from an authoritative source:
CDCWaist-to-Hip Ratio Calculator
Calculate your waist-to-hip ratio (WHR) and assess your health risk category based on WHO guidelines. A key indicator of central obesity and metabolic risk.
Lean Body Mass Calculator
Calculate your lean body mass (LBM) — your weight minus body fat. Used for setting protein targets, calorie needs, and tracking body composition progress.
Macro Calculator
Calculate your daily macronutrient targets (protein, carbs, fat) based on TDEE, goal, and preferred macro split. Supports weight loss, maintenance, and muscle gain.
Pregnancy Weight Gain Calculator
Calculate recommended weight gain during pregnancy based on pre-pregnancy BMI and gestational week, following IOM guidelines.
Ovulation Calculator
Calculate your ovulation date and fertile window based on your last period and cycle length.
Period Cycle Calculator
Predict your next period dates, cycle days, and PMS window based on your last period and cycle length.
Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →