Pace Calculator: Race Splits

Calculate your running pace and plan race splits for any distance — from 5K to 100-mile ultras. Features negative split strategies, printable pace bands, and a Lock Screen widget for race day. INSTANT PACE CALCULATION Enter your goal finish time and distance — see your required pace immediately. No complicated menus, no account required. Just fast, accurate results when you need them. EVERY DISTANCE COVERED • Road Races: 5K, 10K, 15K, 10 Mile, Half Marathon, Marathon • Track Events: 400m, 800m, 1500m, Mile, 3000m, 5000m • Ultramarathons: 50K, 50 Mile, 100K, 100 Mile • Custom distances for any race or training run SMART PACING STRATEGIES Plan your race with the strategy that works for you: • Even splits — maintain consistent pace throughout • Negative splits (2% or 5%) — start conservative, finish strong • Positive splits — aggressive start for experienced racers See exactly how your mile-by-mile pace changes and plan your effort accordingly. TIME-OF-DAY SPLITS Set your race start time and see actual clock times at each checkpoint. Know exactly when you'll cross the half marathon mark or when to expect your crew at an aid station. Perfect for coordinating with spectators and planning nutrition. PRINTABLE PACE BANDS Generate a PDF pace band to print and wear on your wrist. Never forget your goal splits during the race. Essential for marathons and ultras where you need quick reference without checking your phone. SAVE YOUR FAVORITE RACES Store your goal configurations and recall them with one tap. Track multiple race goals, compare pacing strategies, or quickly switch between your 5K PR attempt and marathon training paces. LOCK SCREEN WIDGET Add your target pace to your Lock Screen for instant reference. Check your goal without unlocking your phone — perfect for a final glance before the starting line. DESIGNED BY RUNNERS • Clean, focused interface with no distractions • Switch between miles and kilometers instantly • Haptic feedback for a premium experience • Full dark mode support • No ads, no subscriptions, no account needed • Works offline — perfect for race morning IDEAL FOR → Marathon and half marathon race planning → Setting 5K, 10K, or mile PR goals → Track workouts and interval training → Ultramarathon aid station timing → Quick pace checks before any race Whether you're running your first 5K or chasing a 100-mile buckle, Pace Calculator gives you the tools serious runners need. Download now and run your smartest race yet.