Running Pace Calculator — Pace, Speed & Race Projections
Calculate your running pace per km and per mile, speed, and projected finish times for 5K, 10K, Half Marathon, and Marathon.
Enter race or training distance
Projected Race Times (even pace)
Fuel your pace with NorthLine
Energy gels every 35 min keep you in your target pace zone
What Is Running Pace?
Running pace is the time it takes to cover one unit of distance — typically expressed as minutes per kilometre (min/km) or minutes per mile (min/mi). It is the most useful metric for pacing a race or training session consistently.Pace vs. Speed
Pace and speed are inversely related. A faster pace means a lower number (fewer minutes per km). * Pace = Time ÷ Distance (e.g., 5:30/km) * Speed = Distance ÷ Time (e.g., 10.9 km/h)Runners typically think in pace; cyclists think in speed. Both are equally valid — choose the one your watch displays.
Projected Race Times
This calculator uses your input pace to project finish times across all standard race distances. Note that these are *even-pace* projections — real race times vary based on terrain, fatigue, and fuelling strategy.| Distance | Common Beginner Pace | Common Intermediate | Elite | | :--- | :--- | :--- | :--- | | 5K | 7:00–9:00/km | 5:00–6:30/km | <3:30/km | | 10K | 7:30–9:30/km | 5:15–6:45/km | <3:45/km | | Half Marathon | 8:00–10:00/km | 5:30–7:00/km | <3:55/km | | Marathon | 8:30–10:30/km | 5:45–7:30/km | <4:05/km |
The Role of Fuelling in Sustained Pace
Glycogen depletion is the primary cause of pace deterioration in races over 75 minutes. Maintaining your target pace beyond the 90-minute mark requires consistent carbohydrate intake — typically 45–60g of carbs per hour via energy gels or drinks.Q: How often should I take a gel during a marathon? A: Every 30–45 minutes starting at the 45-minute mark. A NorthLine Gold Gel every 35 minutes keeps you in the optimal 60–90g/hour carbohydrate absorption window.
Q: What pace should I train at? A: Most of your training (75–80%) should be at an easy conversational pace — roughly 60–75 seconds per km slower than your 10K race pace. This builds aerobic base without accumulating excessive fatigue.
Frequently Asked Questions
Q: What is a good running pace for beginners?
A: A comfortable beginner pace is typically 7:00–9:00 min/km (11:15–14:30 min/mile). The most important thing is to run at a conversational pace — you should be able to speak in full sentences without gasping.
Q: How do I improve my running pace?
A: The most effective methods are: (1) Increase weekly mileage gradually (no more than 10% per week), (2) Add one tempo run per week at your goal race pace, (3) Include one interval session (e.g., 6×1km repeats), and (4) Ensure adequate nutrition and recovery between sessions.
Q: What is the difference between 5K pace and marathon pace?
A: Most runners are approximately 45–75 seconds per km slower at marathon pace compared to their 5K pace, due to the need to conserve glycogen and avoid early fatigue. Attempting to run a marathon at 5K pace always results in a severe slowdown in the final third.
Verified Data Sources & Authority References
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