Pace Calculator
Enter the distance you ran and the time it took to see your pace per km and per mile, plus your average speed.
Reviewed by the ToolNestr Editorial Team — July 2026
About this pace calculator
Whether you're training for a 5K or a marathon, knowing your pace helps you plan and improve. Enter how far you ran and how long it took, and this calculator shows your pace per kilometre and per mile, along with your average speed — all instantly. The World Health Organization (WHO) recommends at least 150 minutes of moderate-intensity aerobic activity per week for adults. Track your training alongside the Calorie Calculator to see how much energy your runs burn.
When to use this tool
Use the Pace Calculator before a race to decide what pace to target, or after a run to analyse your performance. It’s essential during training blocks — for example, checking whether your easy-run pace is in the right zone, or calculating the pace you need to hold for a sub-45-minute 10K. Coaches use it to prescribe goal paces for interval workouts and tempo runs.
Tips for best results
- Use a GPS watch or a measured route (like a track or marked course) for the most accurate distance input.
- For races, calculate your target pace in advance and write it on your wrist — it’s easy to go out too fast in the excitement.
- Remember that pace naturally slows on hilly terrain, so adjust your expectations when running a course with significant elevation gain.
What different pace ranges mean
Running pace falls into distinct intensity zones. The bars below show approximate pace ranges for each zone and what they feel like.
Marathon runner
Calculate the exact pace you need to hold for 42.2 km to hit your goal time, and practise running at that effort during long runs.
Beginner jogger
Find a comfortable, sustainable pace that lets you run without burning out after five minutes — the key to building a lasting habit.
Running coach
Prescribe precise paces for easy runs, tempo sessions and interval workouts so athletes train in the correct intensity zones.
Triathlete
Use the same tool for running, cycling and swimming pace calculations to plan brick sessions and race-day transitions accurately.
| Race distance | Goal time (hr:min) | Pace per km |
|---|---|---|
| 5K | 22:30 | 4:30 /km |
| 10K | 45:00 | 4:30 /km |
| Half marathon | 1:40:00 | 4:44 /km |
| Marathon | 3:30:00 | 4:59 /km |
| 50K ultramarathon | 5:30:00 | 6:36 /km |
| 100K ultramarathon | 12:00:00 | 7:12 /km |
How pace is calculated
Pace is simply time divided by distance. It tells you how long it takes to cover one unit of distance (usually one kilometre or one mile). The reciprocal of pace is speed, which tells you how far you cover per unit of time.
Pace (min per km) = total time (minutes) ÷ distance (km)
Speed (km/h) = distance (km) ÷ total time (hours) = 60 ÷ pace (min/km)
Pace (min per mile) = pace (min/km) × 1.609344
Speed (mph) = speed (km/h) ÷ 1.609344
For example, a pace of 5:00 /km means you run one kilometre in 5 minutes. Your speed is 60 ÷ 5 = 12 km/h. Runners use pace rather than speed because it maps naturally to interval distances and race splits.
Worked example
A runner completes a 10 km race in 48 minutes and 30 seconds. What is their pace?
How to use the Pace Calculator
Enter distance
Type the distance you covered or plan to cover, and choose kilometres or miles from the dropdown.
Enter time
Fill in hours, minutes and seconds. For a race, use your finish time. For training, use the duration of your run.
Read your pace
See your pace per km and per mile, plus your average speed. Use the pace figure to guide your effort on future runs of similar distance.
Tips for better pacing
Use a GPS watch or measured route
The most accurate pace calculations start with accurate distance. GPS watches, track laps or pre-measured courses give the best data.
Practise race-day pacing
Calculate your target pace in advance and write it on your wrist or set your watch. It's easy to go out too fast in the excitement — stick to the plan.
Adjust for terrain and weather
Pace naturally slows on hills and in heat. A 5:00 /km effort on flat ground might feel like 5:30 /km on a hilly trail. Adjust your expectations and effort accordingly.
Frequently asked questions
What is running pace?
Pace is how long it takes to cover one unit of distance — for example minutes per kilometre or minutes per mile. It’s the standard way runners measure effort.
Can I use it for any distance?
Yes — 5K, 10K, half marathon, marathon or any custom distance in kilometres or miles.
Does it show speed too?
Yes, it also shows your average speed in km/h and mph.
What is a good running pace for a beginner?
A comfortable conversational pace for a beginner is typically around 6:00–7:30 per km (9:40–12:00 per mile). The "right" pace is one you can sustain for your target distance.
How do I improve my pace?
Consistent training with a mix of easy runs, interval sessions and long runs is the most effective way. Many runners aim to improve by 5–10 seconds per km over a few months of structured training.
Can I use this for walking, cycling or swimming?
Yes — the calculator works for any activity where you cover distance over time. Enter your distance and time, and you’ll get the pace and speed regardless of the activity.
How does elevation affect my pace?
Climbing 100 metres of elevation typically adds about 10–15 seconds per km. Descending can slightly improve pace but the net effect on hilly courses is usually slower overall.
What’s a realistic pace goal for a first marathon?
Most first-time marathoners target 5:00–6:00 per km (8:00–9:40 per mile), finishing in 3:30–4:15. The key is to start conservatively and maintain a steady effort.
How do I pace an interval workout?
Run intervals at about your 5K race pace or slightly faster, with recovery jogs at a very easy effort. The rest between intervals should be long enough to catch your breath, typically equal to the work period.
How does weather affect running pace?
Heat, humidity and strong headwinds all slow you down. As a rough rule, pace slows by about 2–5 seconds per km for every 5°C above 15°C. Adjust your goals on hot days.