1. What is a Half Marathon?

A half marathon is a road running event of 21.0975 kilometers (13.1094 miles). It's half the distance of a full marathon and a popular challenge for runners of various skill levels.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Time \) — Total race time (hours:minutes:seconds)
• \( Pace \) — Your running pace (minutes:seconds per kilometer)
• \( 21.0975 \) — Half marathon distance in kilometers

Explanation: The equation multiplies your per-kilometer pace by the total distance to estimate your finish time.

3. Importance of Pace Calculation

Details: Knowing your estimated finish time helps with race planning, pacing strategy, and setting realistic goals based on your training pace.

4. Using the Calculator

Tips: Enter your average pace per kilometer in minutes and seconds. The calculator will estimate your total half marathon time.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this calculator?
A: It provides a theoretical time based on constant pace. Actual race times may vary due to terrain, weather, and pacing variations.

Q2: What's a good half marathon pace?
A: This varies by fitness level. Beginners might aim for 6:00-7:00 min/km, while elite runners run under 3:00 min/km.

Q3: How does this compare to marathon time?
A: Marathon time is typically more than double your half marathon time due to fatigue in longer distances.

Q4: Should I use my training pace?
A: For race prediction, use a pace from recent tempo runs or shorter races, not easy training pace.

Q5: How can I improve my half marathon time?
A: Incorporate speed work, long runs, and tempo runs into your training while gradually increasing mileage.