Running Pace, Speed and Time Explained
Running pace (time per km or mile) is the key metric for training and racing. Understanding the relationship between pace, speed and finish time helps you set realistic goals and plan training sessions effectively.
Common Race Distances and Target Paces
| Distance | Beginner | Intermediate | Advanced |
|---|
| 5K | 8+ min/km | 5–7 min/km | Under 4:30 min/km |
| 10K | 8+ min/km | 5:30–7 min/km | Under 4:45 min/km |
| Half marathon | 9+ min/km | 6–7:30 min/km | Under 5 min/km |
| Marathon | 9+ min/km | 6:30–8 min/km | Under 5:15 min/km |
Training Pace Zones
Easy runs (most of your mileage): 60–90 seconds/km slower than race pace. Tempo runs (comfortably hard): 15–30 seconds/km slower than 10K race pace. Intervals (hard efforts): at or slightly faster than goal race pace. Most training plans follow an 80/20 split — 80% easy, 20% hard.
Frequently Asked Questions
What is a good 5K time?
For a beginner, completing a 5K in under 40 minutes (8 min/km or 12:52 min/mile) is a solid goal. Intermediate runners target 25–35 minutes. A sub-25 minute 5K (5 min/km) is competitive. Elite men run sub-13 minutes; elite women sub-15 minutes. Most parkrun participants finish between 25–40 minutes.
How do I calculate running pace?
Pace = total time divided by distance. A 30-minute 5K gives a pace of 30÷5 = 6 minutes per kilometre (or 9:39 per mile). Our calculator converts between pace, speed and finish time automatically.
What is the difference between pace and speed?
Pace is time per distance unit (minutes per km or mile). Speed is distance per time unit (km/h or mph). They are reciprocals: a 6 min/km pace = 10 km/h speed. Runners typically talk in pace; cyclists and swimmers more often use speed.
What should my long run pace be?
For most runners, long runs should be 60–90 seconds per km (about 1–1.5 min/mile) slower than your goal race pace. For example, if you're targeting a 5 min/km 10K, your long runs should be around 6–6.5 min/km. This allows for aerobic development without excessive fatigue.
How do I train to improve my 5K time?
Key workouts: interval training (e.g., 8 × 400m at goal pace with 90s rest), tempo runs (20 min at a comfortably hard pace), and easy aerobic runs (60–75% of max heart rate). Consistency matters more than individual workouts — 4–5 runs per week over several months produces the biggest improvements.