Race Performance & Goal Setting

Tools to plan and analyze your races.

Race Time Predictor

Disclaimer: Choose a prediction formula. All predictions are estimates and individual results may vary due to training, conditions, and other factors.

Recent Race Info

Target Race Info

How does race prediction work?

Race time predictors use formulas based on thousands of runners' results. They estimate your finish time for a new distance using your recent performance. Factors like training, weather, and course can affect your actual result.

Target Pace Calculator

Even pacing - maintain the same pace throughout the entire race. Best for flat courses in ideal conditions.
How to use your target pace?

Target pace is the average speed you need to maintain to reach your goal time. Use it to guide your training and race-day strategy. Practice running at this pace in workouts to build confidence.

Split Time Calculator

How to use split times?

Split times show your cumulative time at set intervals. Use them to check your progress during a race and adjust your effort if needed. Consistent splits are a sign of good pacing.

About Race Performance Tools

These calculators help you predict race times, set realistic goals, and plan your pacing for events from 5K to marathon. Each tool is designed for a specific purpose, and together they support smarter training and racing.

  • Race Time Predictor: Estimate your finish time for a target race using a recent result and scientific formulas. Choose from several formulas for different scenarios. All predictions are estimates—actual results may vary.
  • Target Pace Calculator: Find the average pace you need to reach your goal time for any distance. The result always shows both min/km and min/mile, regardless of your chosen unit.
  • Splits Table: See your projected split times for the entire race, based on your goal time and pacing strategy. For miles, splits are shown every 5K; for kilometers, every 5K for longer races or every 1K for shorter ones. The pacing strategy (even, negative, positive split) only applies to this table.
  • Split Time Calculator: Calculate cumulative split times for any distance, pace, and interval. Use this to plan custom splits for training or racing.

How to Use These Tools

  • Use a recent race result for the most accurate predictions.
  • Set a realistic goal time and use the Target Pace Calculator to find your required pace.
  • Review the Splits Table to plan your pacing and check how your strategy affects your race.
  • Use the Split Time Calculator for custom workouts or to break down your race into manageable segments.

Tips for Race Day

  • Even pacing is best for most runners and courses. Negative splits (faster second half) are for advanced runners or hilly courses. Positive splits (faster first half) are riskier and not recommended for most.
  • Adjust your pacing for weather, terrain, and how you feel on race day.
  • Remember: calculators provide estimates—listen to your body and adapt as needed.