What's a good beginner half marathon time?
2:00-2:30 is common for beginners. Focus on finishing before targeting time.
Health Fitness
Half Marathon Pace Calculator
Calculate half marathon pace with your details.
Personalized estimate
Use realistic inputs for the most useful results.
What this calculator does
A half marathon pace calculator determines the per-mile or per-kilometer pace needed to finish 13.1 miles (21.1 km) in your target time. Understanding pace helps with training, race strategy, and realistic goal-setting based on current fitness.
How it works
Divide your target finish time by 13.1 miles or 21.1 km to get pace. The calculator shows splits for each mile and suggests training paces.
Formula
Pace = Target Time ÷ 13.1 miles. Example: 2:00:00 ÷ 13.1 = 9:10/mile pace.
Tips for using this calculator
- Start slightly slower than target pace
- Practice race pace in training runs
- Account for hills and weather conditions
- Negative split (faster second half) is optimal strategy
- Use 10K time × 2.1 to estimate half marathon time
Frequently asked questions
How do I improve my pace?
Incorporate tempo runs, intervals, and long slow runs. Consistent training over 12+ weeks.
Should I run even splits?
Slight negative splits (faster second half) usually work best for most runners.