Pace Running Calculator vs Ruby Pace

Pace — a simple, fast running pace calculator Distance, time and pace are linked: change any two, and Pace instantly works out the third. Set a target for your next race, or check your goal pace for a 5K, 10K, half or full marathon, in seconds. THE TRIANGLE THAT SOLVES ITSELF • Distance + time → your pace • Distance + pace → your finish time • Time + pace → the distance covered • Quick presets: 5K, 10K, 20K, half marathon, marathon, plus fine adjustments SPLITS • A km-by-km (or mile-by-mile) breakdown of your race • Plan your race strategy ahead of time: negative splits, even pacing… RACE TIME PREDICTOR • Estimate your finish times for 5K, 10K, half and full marathon from your current effort • Built on a proven prediction method (the Riegel formula) • Set a realistic race goal before you toe the line SAVED GOALS • Save several race scenarios (10K in 45 min, half in 1h50…) • Reload them in one tap to compare your race plans YOUR WAY • Metric (km) or imperial (miles, yards) • English or French Free, simple, no account required.

Calculate your pace, reach your goals. Ruby Pace is a clean and fast pace calculator built for runners of all levels. Whether you're training for a 5K or a marathon, get the exact paces you need in just seconds — based on your VMA or a target time and distance. From short intervals to long runs, Ruby Pace helps you train smarter, without the clutter. Features: - Calculate your training paces from your VMA - Find your ideal race pace from a time + distance goal - Clear, color-coded pace zones (easy, threshold, 10K, etc.) - Simple interface, zero distractions - Automatically saves your latest data - Designed for focused runners who want to progress without overcomplicating things. Turn your VMA into race-ready pace — instantly.