Race Predictions
Based on your current pace, estimated finish times:
5K
25:00
10K
50:00
Half
1:47:08
Marathon
3:48:05
How the Pace Calculator Works
Pace Formula: Pace = Total Time / Distance
For example, running 5K (3.1 miles) in 25 minutes gives a pace of 25 / 3.1 = 8:04 per mile.
Pace to Speed
Speed (mph) = 60 / Pace (min/mile)
Mile to KM
Pace/km = Pace/mile / 1.609
Common Running Paces
| Description | Pace/Mile | Pace/KM | Speed |
|---|---|---|---|
| Walking | 20:00 | 12:26 | 3.0 mph |
| Brisk Walk | 15:00 | 9:19 | 4.0 mph |
| Beginner Jog | 12:00 | 7:27 | 5.0 mph |
| Casual Run | 10:00 | 6:13 | 6.0 mph |
| Intermediate | 8:00 | 4:58 | 7.5 mph |
| Advanced | 7:00 | 4:21 | 8.6 mph |
| Elite | 5:00 | 3:06 | 12.0 mph |
Explore Pace Scenarios
Explore how changes affect your results
Your Pace vs Runners
Compared to the general population
Your Pace
8.05 min/mi
Percentile
74th
You're in the ideal range!
Distribution
Beginner
12.00
Casual
10.00
Recreational
9.00
Intermediate
8.00
Advanced
7.00
Population Average
9.00
Ideal Range
7.00 - 10.00
min/mi
Your Ranking
Top 74%
26% are higher
Running Performance Tips
Based on your results
Your Pace Analysis
At 8:03/mile (5:00/km), you're at an intermediate level. Incorporate tempo runs to improve.
Speed Work
For faster race times, do 800m repeats at 7:15 pace with equal rest.
Training Balance
For consistent improvement, keep 80% of runs easy (9:39/mi) and 20% hard.
Frequently Asked Questions
What is running pace?
Running pace is the amount of time it takes to cover a specific distance, typically expressed as minutes per mile or minutes per kilometer. A faster pace means a shorter time per distance unit. For example, a 8:00/mile pace means you run each mile in 8 minutes.
How do I calculate my running pace?
Divide your total running time by the distance covered. If you ran 3 miles in 24 minutes, your pace is 24/3 = 8 minutes per mile. Our calculator handles all the conversions between miles, kilometers, and different time formats automatically.
What is a good running pace for beginners?
A good beginner pace is typically 10-12 minutes per mile (6:15-7:30 per km). The key is maintaining a conversational pace where you can speak in full sentences. As fitness improves, most runners can achieve 8-10 minute miles with consistent training.
What are race pace predictions?
Race pace predictions estimate finish times for different distances based on your current fitness. Generally, pace slows as distance increases. If you run a 25-minute 5K (8:03/mi), you might expect a 52-minute 10K (8:23/mi) and a 1:55 half marathon (8:47/mi).
How does speed relate to pace?
Speed (mph or km/h) is the inverse of pace. A 10:00/mile pace equals 6 mph. A 6:00/mile pace equals 10 mph. Speed is useful for treadmill settings and comparing to cycling or other activities. Pace is more intuitive for planning runs.
How this works
Formulas are implementations of published clinical or public-health equations. Calculations run in your browser — no inputs are transmitted to our servers and no account is required. The result is informational; it does not diagnose, treat, or replace advice from a clinician.
What this tool can’t do
When to consult a professional
Talk to a licensed healthcare provider before using the output of this tool to make a medical decision, especially if you have an underlying condition, are pregnant, or are on medication that affects metabolism or fluid balance.
Sources
- [1]Centers for Disease Control and Prevention (CDC)Official sourcecdc.govAccessed Apr 21, 2026
- [2]National Institutes of Health (NIH)Official sourcenih.govAccessed Apr 21, 2026
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).