BTR: Begin Track Run turns a goal time into a complete training system: VDOT, pace zones, heart rate zones and a plan that adapts to real life. No servers, no subscriptions, no sign-in.
Try the calculatorChoose a race and a target time. BTR works out your VDOT and translates it into easy, marathon, threshold, interval and repetition paces.
Enter your max heart rate and see clear zone ranges that sit beside every pace, so effort stays honest on hills and hot days.
Each session is built from warm-up, interval blocks with target paces, and a cool-down. Open it, follow it, tick it off.
Readiness climbs with every completed session. Skipped or off-target workouts nudge the forecast so the number stays truthful.
Pace, split and race-equivalent calculators, plus a training journal that keeps distance, feel and notes in one tidy timeline.
Track shoe mileage before the cushioning fades, and build a nutrition strategy for long runs and race morning.
🏃 We are a small crew of runners and engineers who got tired of training apps that asked for an account before they offered a single useful pace.
🎯 Our mission is simple: give every marathoner a coach-grade plan that works anywhere, from a mountain trail to a plane seat, with no connection required.
📈 You get clear numbers, honest readiness and workouts that bend around real life, so a missed Tuesday becomes a recalculated forecast instead of a guilt trip.
🔒 The value is trust: your miles, your heart rate and your goals stay on your device, and the app keeps working long after any subscription would have lapsed.
⏱️ Start slow. Finish proud.
Effective Date: October 2026
BTR: Begin Track Run is built to work entirely offline. We do not collect, store or transmit any of your data. Everything you enter stays on your device.
None. The app does not collect personal information, race goals, training logs, heart rate values, gear details or nutrition notes. We never see what you enter.
Because we receive no information, we do not use it, analyze it, profile you or sell it. Calculations such as VDOT, pace zones and readiness run on your device only.
Plans, journal entries and equipment records are stored locally on your device. There is no cloud storage, no backup server and no remote database.
The app contains no analytics, advertising networks, social plug-ins or tracking tools, and it needs no internet connection to function.
Your data is protected by the security of your device, including its passcode and system encryption. As nothing travels over a network, there is nothing to intercept in transit.
We collect no data from anyone, including children under 13, which keeps the app consistent with COPPA principles. Younger athletes should still train with adult guidance.
You hold full control. There are no accounts to manage. To delete everything, simply delete the app from your device.
If the policy ever changes, we will update this page and the effective date above. Our commitment to local-only data will not quietly change.
Questions about privacy? Write to privacy@btrbegintrackrunapp.com.
👋 Whether you have a question, a training idea or a race-day story, we would love to hear from you. Pick the inbox that fits and drop us a line.
⏳ We reply to every message within 24–48 hours.