// FIELD v0.3.0  ·  macOS · Windows · Linux · iOS/Android in development

The modern map room
for the backcountry.

Legacy MapSource and BaseCamp workflows were left behind years ago. Overlanding Maps is the free, local-first replacement built for off-roading — plan trails on a live topo map, build Garmin-compatible routable maps, check legal routes & airspace, and deploy straight to your GPS.

No spam. One note when the next build drops.

  • FREE · no account, no lock-in
  • OPEN DATA · OSM · USGS · USFS · BLM · FAA · NOAA
OpenStreetMap◆OpenTopoMap◆USGS National Map◆USFS MVUM◆BLM Roads & Trails◆FAA LAANC◆NOAA SWPC◆Open-Meteo◆RainViewer◆Esri Imagery◆ OpenStreetMap◆OpenTopoMap◆USGS National Map◆USFS MVUM◆BLM Roads & Trails◆FAA LAANC◆NOAA SWPC◆Open-Meteo◆RainViewer◆Esri Imagery◆
// 01 — THE PROBLEM

Built because the old way was abandoned.

Legacy MapSource / BaseCamp
  • Discontinued — no updates, no support
  • Windows-era UI, clunky on modern machines
  • Proprietary map products & lock-in
  • No public-land, legal-route, or airspace data
  • Painful custom-map workflow
Overlanding Maps
  • Actively built — modern, fast, native
  • Clean cross-platform desktop app (Tauri + Rust)
  • Open data, zero lock-in
  • MVUM · BLM · forest · airspace overlays built in
  • One-click Garmin-compatible map builder
// 02 — THE TOOLKIT

Everything from import to the trailhead.

A complete planning bench: open your existing files, lay out the trip, know where you can legally drive, and push it to the device in your dash.

⇄

Open everything — no conversion step

Import GPX, KML, KMZ, and compatible GDB files straight from MapSource & BaseCamp. Export device-compatible GPX 1.1 to disk or push it directly to a connected GPS.

⌘O Import ⌘E Export
▦

Instant basemaps

Topo, USGS Topo, OSM Streets, and Esri Satellite — switch base layers in one keystroke. Your last map is remembered.

⌘1⌘2⌘3⌘4
⛓

Know where you can legally drive

Government route data on any basemap: USFS MVUM motorized roads & trails, BLM roads & trails, and National Forest boundaries.

⌥M⌥B⌥F
⛺

Live conditions on demand

Campgrounds color-coded for boondocking vs. paid with power/water on hover, plus live precipitation radar for your current view.

⌥C Camps ⌥R Radar
⚲

Author trips that last

Drop waypoints with device-native GPS symbols, draw & edit routes with draggable vertices, and keep it all in a persistent local library.

⌘⇧P Pin ⌘⇧N Route
⤓

Deploy to Garmin-compatible GPS devices

Auto-detect connected units and read the real model name, then deploy data, compatible vector .img maps, or KMZ custom maps — with overwrite protection.

⌘R Detect ⌘D Deploy
▤

Local-first & private

A local SQLite library restores your data, basemap, and view on launch — and auto-fits the map to your trips. Nothing is ever uploaded.

⌘0 Zoom to all
// 03 — OFFLINE IMG BUILDER

Build your own Garmin-compatible routable maps.

No GIS expertise required. Draw a region on the map, and Overlanding Maps pulls OpenStreetMap data and compiles a fully routable Garmin-compatible map with mkgmap — then installs the finished .img straight to your device.

  • 01 One-click setup detects Java & downloads mkgmap for you
  • 02 Draw a region rectangle, capped at ~county size
  • 03 Watch a live build log as it compiles
  • 04 Install to your compatible connected GPS — done
⌘B Open the builder
Building gmapsupp.img · Ocala N.F.
✓ Java 21 detected
✓ mkgmap r4922 ready
✓ Overpass download · 42.1 MB
▸ splitter — 14 tiles
▸ mkgmap — compiling routable map
▸ writing gmapsupp.img …
  elevation · roads · POIs · routing graph
 78%
GO
Clear to flyLAANC 400 ft · wind 6 mph · gusts 9 · Kp 2 · clear
CAUTION
Marginal conditionsLAANC 150 ft · gusts 22 mph · Kp 5 (GPS)
NO-GO
Restricted airspaceNational Defense TFR · 0 ft LAANC
// 04 — DRONE & AIRSPACE INTELLIGENCE

Right-click anywhere for a flight verdict.

For overlanders who fly a drone at camp: a combined GO / CAUTION / NO-GO read pulled live from FAA airspace and weather services — so you know before you launch.

AirspaceLAANC ceiling grid · prohibited & restricted areas · TFRs
Weathertemp · wind · gusts · 400 ft winds · precip · cloud cover
GPS reliabilityNOAA geomagnetic Kp index

Reminder shown in-app: NOTAMs are not included, and no drones in National Parks or Wilderness.

// 05 — WHAT'S NEXT

The trail keeps going.

Shipped today is just the start. Native iOS and Android apps are in development so planning can move from desktop to trail.

SHIPPING · v0.3
  • GDB / GPX / KML / KMZ import
  • MVUM · BLM · airspace overlays
  • Garmin-compatible custom IMG builder
  • Device detect & deploy
NEXT · v0.4
  • Offline maps (PMTiles)
  • Elevation profiles
  • Track statistics
  • iOS & Android companion apps
LATER
  • Recreation.gov · NWS · river gauges
  • Wildfire perimeters · slope-angle shading
  • inReach MapShare · cloud sync
// JOIN THE EXPEDITION

Be first on the trail.

Overlanding Maps is free and in active development for desktop, with iOS and Android apps underway. Drop your email and we'll send one note when the next build is ready to download.

Free · cross-platform · no account required.