Running Pace Calculator
Enter your target time and distance (or pick a preset). Get pace per mile/km, speed, and a shareable image.
Frequently Asked Questions — Pace Calculator
What is running pace?
Running pace is the time it takes to cover a fixed distance—usually minutes per kilometre (min/km) or minutes per mile (min/mi). It’s the inverse of speed (km/h or mph).
How do I use the pace calculator?
Enter any two of the three variables—time, distance, or pace—and the calculator solves the third (e.g., time + distance → pace).
How do I convert between pace and speed (min/km ↔ km/h, min/mi ↔ mph)?
Pace and speed are reciprocals. Example: 5:00 min/km equals 12 km/h; 8:00 min/mi equals 7.5 mph.
How do I switch between miles and kilometres?
1 mile = 1.60934 km. 1 km = 0.621371 miles. The calculator can convert automatically when you switch units.
What’s a good running pace for beginners?
It varies widely. Many beginners run around 7:00–10:00 min/km (≈11:00–16:00 min/mi). Use conversational, easy pace and build gradually.
Can the calculator predict race finish times (5K, 10K, half, marathon)?
Yes. Set a target pace (or use a recent performance) to project finish times for common race distances.
How do I get per-kilometre or per-mile splits for my goal time?
Enter your race distance and target time; the tool outputs even splits. You can also plan negative splits (slightly faster second half).
Do hills, trail surface, wind, or heat affect pace?
Yes—conditions can slow or speed you versus flat-road assumptions. Treat calculator results as a baseline.
What training paces should I use (easy, tempo, threshold, intervals)?
Most mileage should be easy. Use the calculator to estimate pace zones; run tempo/threshold and intervals 1–3× per week as your plan allows.
How accurate are pace calculations?
They’re as accurate as your inputs (distance/time) and conditions. GPS error, terrain, and fatigue can cause small differences.
How do I map treadmill speed (mph/kph) to outdoor pace?
Use a speed↔pace converter. Treadmills display mph/kph; runners often think in min/mi or min/km.
How do I set a realistic goal pace for my next race?
Base it on recent results and training paces. The calculator can convert your latest run into target pace and a projected finish.
How do I check average pace for a run I’ve already finished?
Enter run time and distance; the calculator returns average pace so you can compare to your training zones.
Can I use the calculator for run/walk strategies?
Yes—compute the overall target pace for your goal time, then plan intervals (e.g., 4:1 run/walk) around that target.
Should I track by pace or by heart-rate zones (or both)?
Many runners combine both: pace (external output) and heart rate (internal effort) to pace smarter in heat, hills, or fatigue.