# Race Time Predictor

Calculate your race finish time from your target pace, or find the exact pace you need to hit your goal time.

Enter your race distance and either your target pace or goal finish time. Instantly see your predicted finish time or required per-kilometer pace, plus 5K splits to pace your race perfectly.

## Race Settings

**Race Distance**  
5K  
10K  
Half Marathon  
Marathon  
Custom

**What do you want to calculate?**  
Finish Time  
Required Pace

**Your Pace (min/km, e.g. 5:30)**

Calculate

## Race Pacing FAQ

**What pace do I need for a sub-2 hour half marathon?**  
You need to maintain 5:41/km (9:09/mile), equivalent to about 10.6 km/h. Use the calculator above and select 'Required Pace', choose Half Marathon, and enter 2:00:00 as your goal time.

**What pace do I need to run a 25-minute 5K?**  
A 25-minute 5K requires a pace of 5:00/km (8:03/mile). That's a solid intermediate goal — most beginners start around 6:30–7:00/km and work down from there.

**How do I use splits in a race?**  
Run even splits (same pace every 5km) for the most predictable performance. Negative splits — running the second half faster than the first — are ideal and what elite runners aim for. Avoid going out too fast in the first km.

**What is a good 10K time?**  
Beginner: 60–70 min; Intermediate: 50–60 min; Advanced: 40–50 min; Elite: under 35 min. The world record is under 27 minutes. Most recreational runners finish between 50 and 65 minutes.

**How do I pace myself in a half marathon?**  
Start at your goal pace for the first 10km, then push the final 11km if you feel strong. Avoid running faster than goal pace early — the second half feels much harder than the first regardless of pace.

## How to predict a race finish time

Enter distance and either a pace or a target finish time to get the missing value.

1. **Enter the race distance**  
Pick a common race (5K, 10K, half marathon, marathon) or enter a custom distance.

2. **Enter pace or target time**  
Provide either — the calculator fills in the other.

3. **Read your predicted time or required pace**  
The result shows the predicted finish time plus split breakdowns for common race distances.