Pace Calculator vs PaceRank

Enter one race result, or just enter your VDOT. Get your fitness score and five science-backed training zones instantly — free. Pacesmith uses Jack Daniels' Running Formula to calculate your VDOT score from any recent race. You'll see exact pace ranges for Easy, Marathon, Threshold, Interval, and Repetition training — the same zones elite coaches prescribe. VDOT & TRAINING ZONES (FREE) - Enter any race distance and finish time - Or enter your VDOT directly if you already know it, and watch the paces update as you adjust it - Get your VDOT fitness score based on Daniels' Running Formula - See five training zones with precise pace ranges, in kilometres or miles - Track how your fitness changes over time UNLOCK ALL TOOLS — ONE-TIME PURCHASE Three additional calculators, yours forever. No subscription. No account. RACE PREDICTOR Predict your finish time at every standard distance — from 1500m to the marathon — based on your current VDOT. Enter one result, see them all. PACE CALCULATOR A three-way solver: enter any two of pace, time, and distance to calculate the third. Get per-kilometre or per-mile splits for any run. SPLIT PLANNER Build a race-day pacing plan with even or negative split strategies. See your target time for every single kilometre or mile. BUILT FOR RUNNERS WHO CARE ABOUT THE DETAILS - Jack Daniels' VDOT formula — not guesswork - Last 50 calculations saved automatically - Clean, fast interface — no ads, no clutter - Works offline - Available in 15 languages - One-time purchase unlocks everything, forever

PaceRank is a pace calculator and race benchmarking tool built for runners and triathletes who want more than just a number. Enter any combination of distance, pace, and time — change one value and the others update instantly. Whether you're planning a marathon, targeting a PR, or dialing in your Ironman splits, PaceRank gives you the clarity to run with a real plan. The pace calculator is fast and flexible. Switch between miles and kilometres at any time without losing your work. Enter a target finish time and get your required pace. Enter a pace and see your projected finish. The math updates as you scroll, so you can explore scenarios on the fly without juggling a spreadsheet. What sets PaceRank apart is the ranking engine. Your finish time is compared against results from 107 real races — marathons, ultras, triathlons, and Ironman events ranging from 5K to 100 miles. See where your performance would land in the actual field. Not a percentile estimate, not a generic comparison — real race data, real context. Planning a race where you want to run the second half faster? The negative splits feature lets you set a split target across any distance and see exactly what pace you need for each half. It's a practical tool for athletes who race with a strategy, not just a goal time. PaceRank supports custom distances and events so you can track the races that matter to you, not just the standard ones. Training for an unusual ultra or a local event with a non-standard distance? Add it, save it, use it. The free version gives you access to two races per category so you can try the ranking feature before committing. You'll get a genuine feel for how it works across marathon, ultra, triathlon, and Ironman events. Pro unlocks the full library of 107 races and removes all limits on custom distances and events. Pro is a one-time purchase — no subscription, no recurring charge. Pay once and the full app is yours.