1. What is Half Marathon Time Estimation?

The Half Marathon Time Estimation provides an approximate finish time for a half marathon (21.1 km) based on age, gender, and fitness level. While actual performance varies by individual, this gives a reasonable expectation for training and goal setting.

2. How Does the Calculator Work?

The calculator uses statistical data from race results to estimate finish times:

Where:

• Age — Runner's age in years (18-80)
• Fitness Level — Beginner to elite classification
• Gender — Biological sex (male/female)

Explanation: The calculation starts with base times for each fitness level and gender, then adjusts for age with increasing time for runners over 30.

3. Factors Affecting Half Marathon Time

Details: Actual performance depends on training volume, course difficulty, weather conditions, nutrition, and individual physiology. This calculator provides general estimates only.

4. Using the Calculator

Tips: Select your honest fitness level. Beginners have run consistently for <6 months, intermediates 6-12 months, advanced 1-3 years, elite 3+ years with structured training.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this estimate?
A: It's a general guideline. Individual times may vary ±15 minutes based on specific training and conditions.

Q2: Why does age affect time?
A: Aerobic capacity typically declines about 1% per year after age 30, though training can mitigate this.

Q3: What's a good beginner time?
A: 2:00-2:30 for men, 2:15-2:45 for women is typical for first-time half marathoners.

Q4: How can I improve my time?
A: Increase weekly mileage gradually, incorporate speed work, and include long runs in your training.

Q5: Does weight affect the estimate?
A: Yes, but this calculator assumes average weight for height. Heavier runners may be slower, lighter runners faster.