Free Running Pace Calculator
Updated September 2026
Calculate running pace, finish time, or distance from any two values. Get results in both min/km and min/mile — free tool.
Verified Capabilities
Enter any two of the three values and the tool computes the third instantly.
Pace results always show both min/km and min/mile together, plus speed in km/h.
One-click presets for 5K, 10K, Half Marathon, and Marathon, plus a custom distance option.
No race predictor or Riegel-formula cross-distance time estimation, and no side-by-side equivalent-pace table across race distances.
Understanding your health numbers is the foundation of informed wellness decisions. The Running Pace Calculator uses clinically established formulas to provide science-backed estimates.
Calculate running pace, finish time, or distance from any two values. Get results in both min/km and min/mile — free tool. Results are immediate — no waiting, no loading screens, no account required.
Who uses the Running Pace Calculator?
- Runners calculating their pace or projected finish time for a specific race distance.
- Coaches setting interval training paces based on an athlete's current performance.
- Beginners converting race results between km/h speed and min/km or min/mile pace.
Common uses and search terms
The Running Pace Calculator is frequently used for: running pace, 5k, marathon pace, run speed, min per km, min per mile. Whether you need a quick result or are working through a longer project, the tool handles all common variations without any configuration.
Why use Allio Tools's Running Pace Calculator?
All calculations run locally. No personal health data is ever transmitted or stored anywhere. The tool is completely free with no usage limits, no premium tiers, and no account required. Available in 11 languages and optimised for all screen sizes, the Running Pace Calculator works on desktop, tablet, and mobile with no app download needed.
See also:BMI Calculator · TDEE Calculator · Calorie Calculator
How the Running Pace Calculator works
Choose what to find: Pace (from distance + time), Time (from distance + pace), or Distance (from time + pace).
Pick a preset race distance (5K, 10K, Half Marathon, Marathon) or enter a custom distance in km.
Enter time as h:mm:ss and/or pace as min:sec per km, depending on which mode you selected.
Click Calculate — pace results show both min/km and min/mile plus speed in km/h; distance results show both km and miles.
Tips & tricks
- There's no race predictor or cross-distance time estimation (no Riegel formula) — the tool only solves pace/time/distance for one distance at a time, using values you already know.
- To compare your pace across race distances, switch to Time mode and try each preset (5K/10K/Half/Marathon) one at a time — there's no automatic side-by-side table.
- Distance is always entered in km even when using preset buttons; results include a mile conversion, but there's no separate miles input field.
Frequently Asked Questions
How do I calculate my running pace?
Pace = Time ÷ Distance. Enter your distance and finish time in Pace mode, and the calculator instantly computes your pace in both min/km and min/mile, plus your average speed in km/h.
How do I convert min/km to min/mile?
Multiply min/km by 1.60934. So 5:00 min/km = 5 × 1.609 = 8:03 min/mile. When you calculate a pace, the tool shows both units side by side automatically — you don't need to convert manually.
What is a good running pace for a 5K?
Average recreational runner: 10–12 min/mile (6–7:30 min/km). Solid amateur: 8–9 min/mile (5–5:36 min/km). Good club runner: 6–7 min/mile (3:44–4:21 min/km). Elite/competitive: under 5 min/mile (3:06 min/km).
Does this tool have a race predictor to estimate my marathon time from a 5K time?
No — there's no race predictor feature and no Riegel-formula estimation between distances. The tool only solves for pace, time, or distance from the other two values you already have for a single run; it doesn't project performance across different race distances.
Can I see equivalent paces for other race distances automatically?
No — there's no equivalent-pace table. To compare a pace across distances, select each preset (5K, 10K, Half, Marathon) individually and use Time mode to see the finish time your pace would produce at that distance.
Is my data safe when using the Running Pace Calculator?
Completely safe. The Running Pace Calculator processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
How accurate are the Running Pace Calculator calculations?
The Running Pace Calculator uses clinically validated formulas such as the Mifflin–St Jeor or Harris–Benedict equations where applicable. Results are population-based estimates and can differ from measured values by 10–20% for individuals with atypical body composition. See our <a href="/methodology/">Methodology page</a> for full formula sources and references. Consult a qualified healthcare professional before making medical or dietary decisions.
Which formula does the Running Pace Calculator use?
The Running Pace Calculator uses an established, peer-reviewed formula endorsed by leading health organisations such as the WHO, CDC, or NIH where applicable. The specific formula is chosen for its validated accuracy across diverse adult populations under normal conditions.
Works with ChatGPT, Claude, Cursor, GitHub Copilot, VS Code, Poe and more — 106+ tools, zero data collection.