Jonah's Pace Calculator vs Pace Lab

Whether you're preparing for your first 5k, trying to qualify for Boston, or just getting out there, a pace calculator is crucial in calculating goal times, splits, and pace per mile. This Pace Calculator makes it easy to find what pace you need to run to accomplish your goal. Want to know what pace you need to break two hours in the half marathon? Want to learn what time you need to go through the 5k to run your ideal 10k? Maybe you just want to know what time Eliud Kipchoge ran per mile to break two hours in the marathon. Simply type in time and distance to find pace per mile or kilometer. This Pace Calculator has all the tools you need. If it doesn't, we'll add it. Just let us know.

Pace Lab is a running calculator built for runners who want clear numbers without the clutter. ■ Key Features - Pace calculator Calculate pace and speed from any distance and time. - Race pace calculator Set your goal time and get your target pace — then view full race splits with real clock times across the course. - Pace–speed converter Switch instantly between pace (min/mi or min/km) and speed (mph or km/h). - 400m lap calculator Convert between lap times and equivalent running pace for track sessions. - Training pace calculator Enter your goal time and get recommended paces for easy runs, long runs, marathon pace, threshold runs, and interval workouts. - Heart rate zone calculator Calculate your 5 training zones using Max HR, Resting HR, or Lactate Threshold (LTHR). - Race time predictor Predict finish times across distances using recent race results or VDOT-based estimates. - Energy gel calculator Get a personalized gel count and timing plan based on your race distance and goal pace. No sign-up required — just the tools runners need for smarter training and race planning.