TREK

Every part of your trip. One app you own.

TREK has grown from a travel planner into a whole ecosystem for trips: plan together in real time on a live map, build hikes, tours and road trips, keep bookings and shared costs in order, pack, write the journal, lay out the photo book and hand the busy work to the built-in AI. Self-hosted, on the web, on your phone and offline.

                     

_{PUBLIC SERVICES PROUDLY SPONSORED BY}

Every TREK installation in the world searches through servers that dataforest cloud sponsors.

The place index with over 88 million places, the address search in every TREK language and the planet-wide routing all run on dataforest cloud in Frankfurt, Germany, free of charge for everyone who self-hosts TREK. Without this sponsorship, these services would not exist in this form.

Thank you, dataforest, for backing open source this generously. 💚

Looking for a server for your own TREK? dataforest cloud is where TREK's own services live.

We use LLM-assisted coding tools across parts of this codebase. Nothing ships that a maintainer has not read and understood: every change goes through a pull request, is reviewed and tested, and has a human who can answer for it. "The AI wrote that" is not an answer any of us would accept from ourselves.

See How we use AI in TREK for the details.

ENCRYPTION_KEY=$(openssl rand -hex 32) docker run -d --name trek -p 3000:3000 \
  -e ENCRYPTION_KEY=$ENCRYPTION_KEY \
  -e COOKIE_SECURE=false \
  -v ./data:/app/data -v ./uploads:/app/uploads mauriceboe/trek

Open http://localhost:3000, or http://<server-ip>:3000 from another machine. On first boot TREK seeds an admin account — if you set ADMIN_EMAIL/ADMIN_PASSWORD those are used, otherwise the credentials are printed to the container log (docker logs trek).

COOKIE_SECURE=false is only for trying TREK over plain HTTP: without it the browser drops the session cookie and the login does not stick. Once TREK sits behind HTTPS (see Reverse Proxy), remove it.

Real-time sync via WebSocket (ws). Backend on NestJS 11. State with Zustand. Auth via JWT + OAuth 2.1 + OIDC + Passkeys (WebAuthn) + TOTP MFA. Weather via Open-Meteo (no key required). Maps with Leaflet and Mapbox GL.

The repository ships a ready-to-use docker-compose.yml with secure defaults and every option documented inline. Download it, then:

docker compose up -d

See Install with Docker Compose for the full walkthrough.

helm repo add trek https://chart.liketrek.com
helm repo update
helm install trek trek/trek

See charts/README.md for values.

TREK works as a Progressive Web App — no App Store needed.

1. Open TREK in the browser (HTTPS required)
2. iOS: Share ▸ Add to Home Screen
3. Android: Menu ▸ Install app (or Add to Home Screen)

TREK then launches fullscreen with its own icon, just like a native app.

See Updating — Docker Compose, Docker run, Helm, Portainer, Unraid and Proxmox, plus the encryption-key note.

For production, put TREK behind a TLS-terminating reverse proxy. TREK uses WebSockets for real-time sync, so the proxy must support WebSocket upgrades on /ws.

If you use the MCP addon, the proxy must also pass the Mcp-Session-Id header through in both directions on /mcp — Nginx and Caddy do this by default, but a proxy that strips it makes every tool call open a new session instead of reusing one. See the Reverse Proxy wiki page for details.

server {
    listen 80;
    server_name trek.yourdomain.com;
    return 301 https://$host$request_uri;
}

server {
    listen 443 ssl http2;
    server_name trek.yourdomain.com;

    ssl_certificate     /etc/ssl/fullchain.pem;
    ssl_certificate_key /etc/ssl/privkey.pem;

    # 500 MB covers backup-restore uploads (capped at 500 MB server-side).
    client_max_body_size 500m;

    location / {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }

    location /ws {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $host;
        proxy_read_timeout 86400;
    }

    # Only needed if you use the MCP addon. Responses are Server-Sent Events,
    # so buffering must be off or tool results arrive late.
    location /mcp {
        proxy_pass http://localhost:3000;
        proxy_http_version 1.1;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        proxy_buffering off;
        proxy_read_timeout 3600s;
    }
}

trek.yourdomain.com {
    reverse_proxy localhost:3000
}

Every variable, its default and what it does: see Environment Variables.

The Atlas map's country and sub-national (province/county) boundaries come from geoBoundaries (Runfola et al., 2020), licensed CC BY 4.0. See NOTICE.md for full third-party attributions.

TREK is AGPL v3. Self-host freely for personal or internal company use. If you modify and offer TREK as a network service to third parties, your modifications must be open-sourced under the same licence.