Running Pace Guide — What Your Speed Actually Means

Running pace — measured in minutes per kilometre or minutes per mile — is the fundamental language of running. Understanding what different paces mean for your body, training and race goals makes your running more purposeful and more effective.

Pace vs Speed — The Conversion

Pace and speed are inversions of each other. A pace of 5:00 min/km is equivalent to 12 km/h. A pace of 6:00 min/km is 10 km/h.

Speed (km/h) = 60 ÷ Pace (min/km)

A 6-minute mile is roughly 10:00 min/km or 16 km/h. A 4-minute kilometre is 15 km/h.

What Different Paces Feel Like

Easy pace (conversational). You can speak full sentences without breathing difficulty. This should be slower than you think — many runners go too fast on their easy days. Easy running builds aerobic base, enhances recovery and accounts for most of elite runners' training volume.

Tempo pace (comfortably hard). Short sentences only. This is around your lactate threshold — the pace you could sustain for approximately an hour in a race. Tempo runs build your ability to run faster for longer.

Interval pace (hard). 5K race effort or faster. Used for short repetitions with rest. Builds speed, VO2 max and running economy.

Predicting Race Times

The Riegel formula is widely used for race time prediction:

T2 = T1 × (D2 ÷ D1)^1.06

If you run 5K in 25 minutes, your predicted 10K time is: 25 × (10 ÷ 5)^1.06 ≈ 52 minutes. This accounts for the fact that pace slows as distance increases — you can't maintain 5K pace for a marathon.

Training at the Right Pace

The most common training mistake recreational runners make is running too fast on easy days, which means they can't run fast enough on hard days. This leads to the "grey zone" — everything at medium effort — which produces neither the aerobic adaptations of true easy running nor the performance gains of genuinely hard sessions.

A good rule of thumb: if your easy runs feel embarrassingly slow, they're probably about right. Most runners' easy pace should be 60–90 seconds per kilometre slower than their 5K race pace.