TrailGen - Elevation Routes
Vert, even where it's flat
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
Build custom trail running routes that maximize vertical gain anywhere. Featuring automated loop searches, hill repeats, GPX export, and Apple Watch tracking.
TrailGen finds the route that packs the most elevation gain into your target distance.
Training for a mountain trail race while living in a flat area is a constant struggle. Standard route planners calculate paths from point A to point B. None of them actively analyze local terrain to maximize vertical gain. TrailGen explores trails around your starting location and keeps the loops that climb the most.
• Find the best loop for your starting point and desired distance.
• Repeat a hill by setting your target number of climbs and allowed trail overlap.
• Draw custom routes on the map with instant distance and gain updates.
• Select terrain preferences to allow, avoid, or block trails, dirt roads, and paved roads.
• Block specific trail segments or draw entire avoid zones.
• Relocate your start point within a set radius to find steeper options nearby.
• Analyze elevation profiles color-coded by grade, surface breakdown, overlap, and trace silhouette.
• Navigate offline on Apple Watch, with the workout written to Apple Health.
• Plan race nutrition with timed carbohydrate and fluid reminders along your route.
• Export GPX files, share route images or videos, or import existing GPX tracks.
• Run offline by downloading map sectors to your phone.
TrailGen runs on a proprietary algorithm built specifically for finding elevation gain. Elevation calculations draw from the highest-resolution public datasets available in each country.
The app is free to download. Map viewing, manual routing, GPX imports, elevation profiles, and two daily route searches are free. A single lifetime purchase unlocks unlimited searches, GPX exports, the Apple Watch app, and nutrition planning. No subscription, no ads, no account, no tracking.
Elevation data comes from USGS 3DEP (10m) in the United States, IGN RGE ALTI in France, Natural Resources Canada, and AWS Open Data Terrain Tiles elsewhere. Trail geometry comes from OpenStreetMap. Elevation models carry noise, which can overstate gain on flat ground. Trails on OpenStreetMap can be closed, modified, or private: check your route before leaving and trust real-world conditions on site.
Map background: Mapbox.
Support: https://github.com/a-leblond/privacy-policy/blob/main/trailgen-help.md
Privacy Policy: https://www.trailgen.app/en/privacy
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
TrailGen is now free to download with two daily route searches included. A single lifetime purchase unlocks unlimited searches, GPX exports, the Apple Watch app, and new nutrition planning features.
The developer, Alexis Leblond, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Alexis Leblond
- Size
- 48.5 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 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. - Apple Watch
Requires watchOS 26.0 or later.
- iPhone
- Languages
- English and French
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- TrailGen Pro $9.99
- Copyright
- © 2026 Alexis Leblond