Pick a workout.
Eight categories, from fartlek to track to long runs. Goal race set? The ones that matter float to the top.
LapLimit
Structured running workouts, built from your fitness and tuned to how you feel today.
Scroll
Tell it a recent race. It works out your VDOT, derives your pace zones, and writes the session. Intervals, tempos, hills and long runs, sized to the mileage you want.
How it works
Dial it in.
Slide the mileage. Slide the intensity from 50% to 150%. Every pace follows how you feel today.
Read the session.
A block-by-block timeline with pace targets, distance and duration for every step.
Make it yours.
Set your race, goal and training system once. Everything regenerates around it.
Eight categories
Every kind of hard day.
- Fartlek2-on / 1-off · Pyramid · 3-2-1 · Mona
- HillsLong repeats · Short repeats · Kenyan circuit
- Lactate ThresholdCruise intervals · Norwegian 1K reps
- Long RunEasy · Marathon-pace finish · Cutdown
- Marathon PaceContinuous · Intervals · Alternations
- TempoContinuous · Progressive · Broken
- Track400s · Ladder · 300s · 200m speed sets
- VO₂max1000s · 1200s · 3-minute reps · 30/30 Billat
Each category offers two to five session templates. A goal race of Mile, 5K, 10K, half or marathon reshapes the options and hides sessions that don't suit it.
Training systems
Your paces, your method.
Daniels VDOT
The default. Eleven pace zones from easy to repetition, derived from your race result.
Pfitzinger
Zones relative to marathon pace, with threshold at 15K to half-marathon pace.
Hansons
Easy at marathon pace plus 1–2 min per mile, strength at marathon pace minus 10 s.
Custom
Set your own range for any zone. Blank zones fall back to VDOT.
The intensity slider moves your VDOT 0.3 points per 1%, and every pace follows.
Beyond generating
Build it. Run it. Look back.
- Custom Workout Builder. Distance, time and open steps, repeat groups, and pace-zone, custom-pace or effort targets.
- Calendar & history. Past activities with a route map and synced charts for pace, heart rate, power, cadence and elevation. Scrub one chart and the rest follow.
- Library. Save workouts for later, offline.
Wearables & export
Connect to your wearable.
FIT export
Save a .fit workout and share via Files or AirDrop, then copy it to your Garmin. No account needed.
Intervals.icu
Connect with your own API key. Workouts land on your calendar and sync on to Garmin Connect, if you've linked it there.
LapLimit is not affiliated with or endorsed by Garmin, Intervals.icu, or the authors of the training methods it references. See trademarks and credits.
Privacy policy
Your data stays on your phone.
Last updated: October 4, 2026
The short version
LapLimit has no accounts, no analytics, no advertising and no tracking. We don't run a server that receives your data, and we can't see it.
What the app stores
Saved workouts, scheduled workouts, your settings (including the race result you enter) and cached activities are stored only on your device. They are encrypted at rest with AES-256-GCM, using a key held in your device's Keychain that is never synced to iCloud or restored to another device. Files are also protected so they can't be read while the device is locked.
Intervals.icu (optional)
If you connect Intervals.icu, the app talks directly from your phone to Intervals.icu using the API key you provide. It sends the workouts you choose to schedule and downloads your past activities for the History tab. The key is stored in the Keychain, is sent only in the HTTPS Authorization header, and is never logged. What Intervals.icu does with your data is covered by its own privacy policy. Disconnecting removes the key from your device.
Calendar (optional)
If you schedule a workout, the app can add it to your calendar. Calendar access is requested only at that point, and you can revoke it in iOS Settings.
Maps
Activity routes are drawn with Apple Maps. Apple's privacy policy applies to map tiles loaded for that view.
Sharing
We don't sell, rent or share your data, because we don't have it. Files you export (such as .fit workouts) go wherever you choose to send them.
Children
LapLimit does not knowingly collect any information from anyone, including children.
Deleting your data
Delete the app and all of its data and keys are removed from your device. To remove workouts from Intervals.icu, delete them in the app's Scheduled list or in Intervals.icu.
Changes
If this policy changes, the new version and its date will appear here.
Questions
Write to hello@laplimit.cc.
Terms & notices
The fine print.
Last updated: October 4, 2026
Health disclaimer
LapLimit is a training tool, not medical advice. Workouts and paces are calculated from the race result and settings you enter, and they are estimates. Running, especially hard interval and tempo work, carries a risk of injury. Talk to a doctor before starting or changing a training program, particularly if you have a health condition, are returning from injury, or are new to exercise. Stop if you feel pain, dizziness or unusual shortness of breath. You use the workouts at your own risk.
Terms of use
By using the app or this website you agree to these terms. The app and its content are provided "as is" and "as available", without warranties of any kind, including accuracy, fitness for a particular purpose or uninterrupted availability. To the fullest extent the law allows, LapLimit and its creator are not liable for any injury, loss or damage arising from your use of the app, its workouts or this website.
You are responsible for the accuracy of the data you enter and for how you use exported files and connected services. Using Intervals.icu, Garmin or any other third-party service is subject to that service's own terms, and you are responsible for your own account with it. We may update the app, the website or these terms at any time; the current version is always on this page.
The LapLimit name, icon, design and software are owned by their creator. You may not copy, resell or reverse engineer them except as the law allows. Workouts you generate are yours to use for your own training.
Trademarks and credits
All product names, trademarks and works mentioned here belong to their respective owners and are used only to describe compatibility or training approaches. LapLimit is independent and is not affiliated with, sponsored by or endorsed by any of them.
Apple, iPhone, iOS, App Store, Apple Maps and AirDrop are trademarks of Apple Inc. Garmin and Garmin Connect are trademarks of Garmin Ltd. or its subsidiaries, and FIT is a Garmin file format. Intervals.icu is a service of its respective owner. VDOT and Daniels' Running Formula are the work and marks of Dr. Jack Daniels and the respective rights holders. Advanced Marathoning is by Pete Pfitzinger and Scott Douglas, published by Human Kinetics. Hansons Marathon Method is by Luke Humphrey and Hansons Coaching Services. Yasso 800s are credited to Bart Yasso. The 30/30 interval format is credited to Dr. Véronique Billat. Training paces and sessions in LapLimit are its own calculations and are not official output from any of these sources.
Placeholder background photography is from Wikimedia Commons, public domain.
Questions
Write to hello@laplimit.cc.
Get intouch.
hello@laplimit.ccQuestions, feedback or bug reports are welcome.
LapLimit is a training tool, not medical advice. Consult a doctor before starting a training program. All third-party names are trademarks of their owners; see credits.