Pace Calculator
Calculate running or walking pace, speed, and time. Convert between min/km, min/mile, km/h, and mph. Estimate finish times for 5K, 10K, half marathon, and marathon.
km
Your Pace
5:00/km
Pace (min/km)
5:00/km
Pace (min/mile)
8:03/mi
Speed (km/h)
12.00 km/h
Speed (mph)
7.46 mph
Total time
25:00
Distance
5.000 km
Race Finish Time Projections
Based on current pace of 5:00/km
5K (5 km)25:00
10K (10 km)50:00
Half Marathon (21.098 km)1:45:29
Marathon (42.195 km)3:30:59
How to Use Pace Calculator
- 1Enter any two of: distance, time, or pace.
- 2The third value is calculated automatically.
- 3See finish time estimates for popular race distances.
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Frequently Asked Questions
What is running pace and how is it calculated?▾
Running pace is the time it takes to cover a unit of distance, expressed as minutes per kilometer (min/km) or minutes per mile (min/mile). Pace = Time ÷ Distance. Speed = Distance ÷ Time. Conversions: min/km × 1.60934 = min/mile. km/h × 0.62137 = mph. Example: running 5 km in 25 minutes → Pace = 25/5 = 5:00 min/km = 8:03 min/mile = 12 km/h = 7.46 mph.
What is a good running pace?▾
Pace varies widely by fitness level, age, and race distance. Average recreational runner: 5K in 28–35 min (5:36–7:00 min/km). Competitive amateur: 5K in 20–25 min (4:00–5:00 min/km). Elite runner: 5K in 13–16 min (2:36–3:12 min/km). World record 5K (men): 12:35 (2:31/km). Marathon averages: Recreational: 5–6 hr (7:05–8:31/km). Competitive amateur: 3–4 hr (4:16–5:41/km). Boston qualifier (men 18–34): under 3:00 (4:15/km). World record: 2:00:35 (2:51/km).
How do I calculate my target pace for a race?▾
Target pace = Goal time ÷ Race distance. Example: want to finish a half marathon (21.0975 km) in 2:00:00 → Pace = 120 min ÷ 21.0975 km = 5:41/km = 9:09/mile. Pacing strategy: even pacing (same pace throughout) is most efficient for most runners. Negative split (second half faster) is used by elite runners. Positive split (starting fast, fading) is common in beginners but often leads to a hard finish. For long races, start 5–10 seconds per km slower than target pace for the first 20–30% of the race.
What are race distance standards?▾
5K = 5,000 m = 3.107 miles. 10K = 10,000 m = 6.214 miles. Half Marathon = 21.0975 km = 13.109 miles. Marathon = 42.195 km = 26.219 miles. Ultras: 50K, 50 miles, 100K, 100 miles. Parkrun = 5K (weekly free timed events worldwide). Track mile = exactly 1,609.344 m. Road mile = 1 mile exactly. Swim/Bike/Run: Sprint triathlon = 750m/20km/5km. Olympic = 1500m/40km/10km. Iron = 3.8km/180km/42.2km.
How does heart rate relate to running pace?▾
Heart rate zones correlate roughly to pace zones: Zone 1 (50–60% max HR): very easy, recovery runs. Zone 2 (60–70%): easy conversational pace, aerobic base building. Zone 3 (70–80%): moderate, marathon race pace for trained runners. Zone 4 (80–90%): threshold/tempo pace, 10K race effort. Zone 5 (90–100%): maximum effort, 1K or less. Max HR estimate: 220 − age (rough guide). For training efficiency, most runners should do 80% of running in zones 1–2 and 20% in zones 4–5 (80/20 rule / polarized training).