Race Time Predictor (Riegel Formula)

Current Race Time: Or Select a Predefined Race Distance: 5K 10K Half Marathon Marathon Predict Race Times & Paces

Predicted Race Times and Paces

• 5K:
• 10K:
• Half Marathon:
• Marathon:

Training Pace Zones

• Easy Pace:
• Marathon Pace:
• Threshold Pace:
• Interval Pace:
• Repetition Pace: