Running Pace Calculator

Calculate your running pace, finish time, or distance for any run.

📖 What is a Running Pace Calculator?

A running pace calculator helps runners find any one of three related values - pace, time, or distance - when the other two are known. It's an essential tool for race planning, training zone management, and tracking improvement over time.

Pace is expressed as minutes per kilometre (or per mile) and tells you how long each unit of distance takes. It's the runner's preferred metric because it directly controls perceived effort and heart rate. Speed in km/h is the same measure expressed differently: Speed = 60 ÷ Pace (min/km).

This calculator supports three modes: Find Pace (given distance and time), Find Time (given distance and goal pace), and Find Distance (given time and pace). All results are shown in both metric (min/km) and imperial (min/mile) units.

Pacing strategy is crucial for race performance. Running too fast early depletes glycogen stores prematurely, leading to the infamous "hitting the wall" in longer races. Experienced runners often use even-pacing or negative-splitting strategies - running the second half of a race slightly faster than the first. This calculator helps establish a realistic goal pace before race day.

📐 Formula

Pace (min/km) = Total Time (min) ÷ Distance (km)

Time = Distance (km) × Pace (min/km)

Distance = Total Time (min) ÷ Pace (min/km)

Speed (km/h) = 60 ÷ Pace (min/km)

Pace (min/mile) = Pace (min/km) × 1.60934

📖 How to Use This Calculator

Select what you want to calculate: Pace, Time, or Distance.

Enter the known values - distance, time, or pace as required.

Click Calculate - the result plus speed and mile-pace are shown.

💡 Example Calculations

Example 1 - Find pace for a 10K in 55 minutes

Pace = 55 min ÷ 10 km = 5:30 min/km (8:51 min/mile)

Speed = 10 km ÷ 0.917 h = 10.91 km/h

Try this example →

Example 2 - Find marathon finish time at 5:30 min/km

Time = 42.195 km × 5.5 min/km = 232.07 min = 3h 52m 4s

Try this example →

Frequently Asked Questions

What is running pace?+

Running pace is the time it takes to cover a unit of distance - usually expressed as minutes per kilometre (min/km) or minutes per mile (min/mile). Pace = Time ÷ Distance. A 5:00 min/km pace means you take 5 minutes to run each kilometre. Speed (km/h) is the inverse: Speed = 60 ÷ Pace (min/km).

What is a good running pace?+

For recreational runners: 5:00–7:00 min/km is comfortable. Sub-5:00 min/km is athletic; sub-4:00 min/km is elite-amateur level. For reference, elite marathon runners sustain about 2:50–3:00 min/km for 42 km. Your 'good' pace is one that allows consistent training without injury.

What pace do I need for a sub-2-hour half marathon?+

A sub-2-hour half marathon (21.0975 km) requires a pace faster than 5:41 min/km (or 9:09 min/mile). Use this calculator: set Distance = 21.0975 km and Time = 1:59:59 to get the exact pace needed.

How do I convert pace to speed?+

Speed (km/h) = 60 ÷ Pace (min/km). For example, a 5:00 min/km pace = 60 ÷ 5 = 12 km/h. Conversely, Pace (min/km) = 60 ÷ Speed (km/h).

What are common race distances?+

5K = 5 km, 10K = 10 km, Half Marathon = 21.0975 km, Marathon = 42.195 km, Ultramarathon = any distance above 42.195 km. Parkrun events are 5 km. The standard track is 400 m, so 25 laps = 10 km.

What is a good running pace for a beginner?+

A good beginner running pace is one where you can hold a conversation - typically 7-9 min/km (11-14 min/mile) for most new runners. The priority for beginners is building aerobic base and habit, not speed. Most coaches recommend spending 80% of training at easy conversational pace (Zone 2) and only 20% at harder effort. As aerobic fitness improves, the easy pace naturally gets faster without feeling harder.

What pace do I need to run a sub-2 hour half marathon?+

To finish a half marathon (21.1 km) in under 2 hours, you need to maintain a pace of 5:41 min/km (9:09 min/mile) for the entire distance. A useful benchmark: if you can run 10 km in under 56 minutes, a sub-2hr half marathon is realistic with consistent training. Use this calculator to find the exact pace needed for your target finish time at any race distance.

What pace should I run my first 5K or 10K race?+

For your first race, aim for a conversational pace where you can speak in short sentences. A common mistake is starting too fast and fading. A rough guide: if your comfortable training pace is 7 min/km, target 7:30 min/km for the first half of the race and speed up only if you feel strong after halfway. Use this calculator to convert your target finish time to a per-kilometre pace, then practise that pace in training runs before race day.

What is a good running pace for beginners?+

Beginners should aim for a conversational pace - slow enough to hold a conversation. This typically falls in Zone 2 heart rate (60-70% max HR), often 7-9 min/km (11-14 min/mile) for most adults. Speed is far less important than consistency. After 8-12 weeks of consistent running, pace naturally improves without forced speed work.