An on-device vector topo that's offline for all 50 states — plus snap-to-trail route planning, ride recording, and off-route alerts. Built for ADV riders, overlanders, and dispersed campers.
Coming to the App Store
A vector topo built to live on your phone — contours, terrain, and public land — with the overlays that matter off-pavement: USFS roads, trails & MVUM, BLM parcels, water, and recreation sites.
Trailmark's default map is a sage vector topo that's crisp at every zoom and renders straight from your phone — no tiles to stream. Download any of the 50 states for full trail-level detail and contours that work in airplane mode. USGS topo and satellite are there too when you want them.
Per-layer opacity, drag to reorder, and one-tap switches for USFS roads · USFS trails · MVUM · rec sites · fuel · public land. Your map opens with a sensible set already on. Tap any road, trail, or parcel to identify it — including who owns the land — and browse 14,000+ USFS campgrounds, trailheads, and day-use sites bundled in nationwide, no download.
Drop points and snap to the road-and-trail network, get the elevation profile automatically, then follow any saved line with off-route alerts that buzz before a wrong turn becomes ten miles. One route can carry options — a spur out to a lookout, or two ways round a hard section — that you decide between on the day.
Gloves on, moving, bad light — Trailmark is built for the moment, not the desk.
One tap at your GPS position, long-press anywhere on the map, or just ask Siri — hands on the bars. Add photos, notes, icons, and colors; get a multi-day forecast right on the waypoint.
Live stats on screen and on the Dynamic Island, pause/resume without phantom miles, then review distance, climb, moving time, top speed, and speed & elevation graphs.
Start a trip and every capture collects itself. End it, review everything in one place, keep what matters — and share the whole weekend as one file.
Know the water before you cross it: live USGS river conditions nationwide — flow, stage and temperature for the crossings and camps along your line.
Everything lives on your phone. Move it whenever you want.
Your waypoints, tracks, and photos stay on your device unless you export them or turn on your own iCloud backup.
Export everything — waypoints, tracks, trips, photos, settings — as a single file, or keep a private iCloud backup in your own account. Restore it on a new phone and nothing is lost.
Import GPX, GeoJSON, KML, and KMZ — your whole library comes over with colors, routes, and icons intact. Export standard GPX or KML your riding buddies can open in any app. UTM, DMS, or decimal — your call.
Paid once. No subscription to use it. No account.
Built for the ride, not the renewal.
Trailmark ADV works fully offline, in airplane mode — no account required. Once a state is downloaded, it's yours to keep: it keeps working on your phone whether or not you ever download another one.
