Pace Lab vs Run Your Stride

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.

Run Your Stride is the running pace calculator built for every runner. Whether you're chasing a PR, building a training plan, or just curious about your splits — Stride gives you the numbers you need, instantly. PACE CALCULATOR Enter any two of time, pace, or distance and Stride calculates the third. Planning a marathon? Find your goal pace. Finished a tempo run? See your exact time. Every result saves automatically so you can track your progress over time. RACE PREDICTOR Enter a recent race result and Stride uses the Riegel formula to predict your finish time across every standard distance — 5K, 10K, Half-Marathon, and Marathon. See your equivalent paces so you know exactly what effort to target on race day. PACE CHART A clean, scrollable reference chart showing finish times across all major race distances for every pace — per mile or per kilometer. No calculating required. TRAINING PACES Set your goal race and target time. Stride generates five calibrated training zones — from recovery runs to speed work — so every workout has a purpose. HISTORY Every calculation is saved automatically. Tap any entry to view full mile or kilometer splits, or share them with your coach or training partners. Clean design. No ads. No account required. Just the numbers that move you forward.