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 is a popular challenge for runners of various skill levels.

2. How the Calculator Works

The calculator uses the simple formula:

Where:

• Distance — Fixed at 13.1 miles or 21.0975 km
• Pace — Your running pace in minutes per mile or kilometer
• Finish Time — Total time to complete the race in hours:minutes:seconds

3. Importance of Pace Calculation

Details: Knowing your expected finish time helps with race strategy, pacing, and setting realistic goals. It's also useful for training plan development.

4. Using the Calculator

Tips: Enter your expected pace in minutes and seconds per mile or kilometer. The calculator will show your estimated finish time and a pace chart showing how different paces affect your finish time.

5. Frequently Asked Questions (FAQ)

Q1: What's a good half marathon time?
A: For beginners, 2:00-2:30 hours is common. Intermediate runners aim for 1:45-2:00, while advanced runners target under 1:30.

Q2: How does elevation affect finish time?
A: Hilly courses can add 5-15 minutes compared to flat courses at the same pace. This calculator assumes flat terrain.

Q3: Should I use mile or km pace?
A: Use whichever you're more comfortable with. Most U.S. runners use mile pace, while others typically use km pace.

Q4: How accurate is this calculator?
A: It provides theoretical times based on consistent pace. Actual times may vary due to terrain, weather, and race conditions.

Q5: What's the world record half marathon time?
A: As of 2023, the men's record is 57:31 (Kibiwott Kandie, 2020) and women's is 1:02:52 (Letesenbet Gidey, 2021).