HomeCARDIO CALCULATORS FOR(RUNNING PACE,HEART RATE,POWER TO WEIGHT RATIO(CYCLISTS),SWIMMING PACE,MARATHON TIME PREDICTOR) bythe fit therapies -May 31, 2025 Running Pace Calculator Distance (km): Time (minutes): Calculate Pace Heart Rate Zones Your Age: Show Zones Power-to-Weight Ratio (Cyclists) FTP or Avg Watts: Weight (kg): Calculate Ratio Swimming Pace Calculator Distance (meters): Time (minutes): Calculate Lap Pace Marathon Time Predictor Recent Race Distance (km): Race Time (minutes): Estimate Marathon Time Tags: CARDIO FITNESS FITNESS AND HEALTH CALCULATORS HEART RATE RUNNING PACE SWIMMING PACE Facebook Twitter