Pace Calculator: Run & Splits

Know your numbers before the gun goes off. Run Pace turns pace math into one clean tool: solve any pace problem, predict race times, and print-perfect split tables — all offline.

PACE CALCULATOR
• Enter any two of pace, time and distance — the third is solved instantly
• Quick presets for 5K, 10K, half marathon and marathon
• Works in min/km, min/mi, km/h and mph, with one-tap unit switching

RACE TIME PREDICTOR
• Ran a recent race? Predict your time at any other distance using the proven Riegel formula
• See how a 5K result translates to a 10K, half or full marathon
• A realistic target beats a hopeful guess

SPLIT TABLES
• Generate per-kilometer or per-mile splits for your goal time
• Even pacing or a negative-split ramp — the table adds up to your goal exactly
• Glance-friendly layout you can screenshot and take to the start line

TRAINING PACE ZONES
• Get easy, tempo, threshold and interval paces derived from your race pace
• Train at the right effort instead of racing every workout

PRIVATE & OFFLINE
• 100% offline — no account, no GPS, no tracking
• Instant answers, airplane-mode friendly

From your first 5K to a marathon PR: calculate it, plan it, run it.