Every runner's training calculator
VDOT training zones, race predictions, pace math, and split plans — all in one beautiful app. No subscription. No account. No internet required.
Find Your Training Zones
Enter any race result and instantly see your VDOT score with five science-backed training zones — Easy, Marathon, Threshold, Interval, and Repetition.
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Predict Race Times at Every Distance
From 1500m to the marathon — see your predicted finish times at every standard distance based on your current fitness level.
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Solve Pace, Time, or Distance
A three-field calculator that solves for whichever variable you need — enter any two and get the third instantly.
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Build Your Race-Day Split Plan
Generate a split-by-split race plan with your target pace and distance. Know exactly what every mile should look like.
Learn more →Why Pacesmith
Free to start. $1.99 to unlock.
VDOT and history are free. Unlock the three additional tools with one purchase. No subscription.
Works Offline
Zero network calls. All math runs on your device.
No Account Required
No sign-up, no tracking, no data collection.
Ready to train smarter?
