Pace Calculator: Pacesmith
Splits, VDOT & Race Predictor
Free · In-App Purchases · Designed for iPad. Not verified for macOS.
Dial in race-day pace, predict your finish from any distance, plan splits, and train by VDOT. Fast, offline, no account.
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
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
What's new in 1.2.0:
• Know your VDOT already? Enter it directly. A new Enter VDOT mode on the VDOT tab lets you set your score with a slider, the plus and minus buttons, or by typing it, and your five training paces update as you go. No race result required.
• Switch back to Race Result any time and your calculated score is right where you left it.
• Pacesmith now speaks 15 languages.
• Training zones now follow your distance unit, so if you run in kilometres you see kilometres.
• Fixed the Done button above the number keypad, which had stopped appearing on every calculator.
Thanks for running with Pacesmith! Questions or ideas? We'd love to hear them.
The developer, Aaron Hampton, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Aaron Hampton
- Size
- 20.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Languages
English and 12 more
- English, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Ukrainian
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Unlock $1.99
- Copyright
- © 2026 Aaron Hampton
