You've done your first run. Someone asks what your pace was, and you say "er... fairly fast?" Pace is the language of running — it's how runners communicate about speed, effort, and targets. Understanding it makes you a better runner immediately, even before you lace up again. Let's sort this out properly.
What Is Running Pace?
Running pace is the time it takes you to cover a set distance. In the UK and most of Europe, pace is expressed in minutes per kilometre (min/km). In the US and parts of the UK (particularly in road racing), minutes per mile (min/mile) is commonly used. They're both measuring the same thing from different perspectives.
If you ran 5km in 30 minutes, your pace is 6:00 min/km (30 ÷ 5 = 6). Our running pace calculator converts between pace, speed, distance, and time instantly.
Pace vs Speed: What's the Difference?
Pace tells you how long each kilometre takes. Speed tells you how many kilometres you cover per hour. They're inverse expressions of the same thing:
- 6:00 min/km = 10 km/h
- 5:00 min/km = 12 km/h
- 4:00 min/km = 15 km/h
Runners typically talk in pace (min/km); cyclists usually talk in speed (km/h). There's no deep reason for this — it's just convention.
Converting Between min/km and min/mile
1 mile = 1.609km. So to convert:
- min/km → min/mile: multiply by 1.609 (e.g., 6:00 min/km × 1.609 = 9:39 min/mile)
- min/mile → min/km: divide by 1.609 (e.g., 9:39 min/mile ÷ 1.609 = 6:00 min/km)
Our fitness goal calculator can help you map out targets across distances.
Using Pace to Set Race Time Targets
Once you know your comfortable training pace, you can project race finish times:
Finish time = pace × distance
- 5km at 6:00 min/km = 30 minutes
- 10km at 5:30 min/km = 55 minutes
- Half marathon (21.1km) at 5:42 min/km = 2 hours exactly
- Marathon (42.2km) at 5:42 min/km = 4 hours (theoretically)
In practice, marathon pace is typically 10-20% slower than half marathon pace for most recreational runners — fatigue is real. Use these projections as aspirational guides rather than guaranteed outcomes.
Easy Pace vs Race Pace vs Tempo Pace
Not all your runs should be at the same pace. Different effort levels serve different training purposes:
- Easy/recovery pace: A conversational pace — you can speak full sentences. This is where 70-80% of your training should happen.
- Tempo pace: "Comfortably hard" — you can speak but only in short sentences. Roughly your 1-hour race pace.
- Race pace: Your target pace for a specific race distance — sustainable only for the race distance.
- Interval pace: Faster than race pace, sustained only for short intervals with rest between.
The most common mistake recreational runners make is running their easy days too fast and their hard days not hard enough — ending up in a grey zone that doesn't deliver the benefits of either.
How to Improve Your Running Pace
- Run more consistently: frequency beats intensity for beginners — 4 runs per week beats 2 hard sessions
- Include structured speed work: intervals and tempo runs specifically target pace improvement
- Build your aerobic base: more Zone 2 running makes every faster pace feel easier
- Work on running form: a running coach or gait analysis can identify efficiency improvements
- Strength train: leg strength directly transfers to running economy
The Most Important Number
For new runners, your most important pace goal isn't a specific time — it's the pace at which you can run while still being able to hold a conversation. Master that first, build your distance, and speed improvements will follow naturally over months of consistent training.
Further reading: Parkrun, the free weekly 5km event, is a fantastic community resource and a great way to measure your pace progress regularly. Find your local Parkrun event.