Your own TREK instance: a collaborative trip planner with maps, itineraries, budgets and packing lists.

Early Access

This app is a brand-new addition to ElfHosted, and is considered beta. It runs, we test it, and your trial lets you prove it fits before you commit, but our support team does not yet have deep experience with it. Expect some trial and error: lean on the upstream documentation, experiment freely, and share what you learn in Discord, where the community and team are figuring these new apps out together. If you need a battle-tested workflow today, our established apps are the safer pick.

What is TREK?

TREK is an open-source trip planner built for planning with other people. Lay out each day on a map, keep bookings and documents with the trip, split costs, tick off the packing list, and write up the journey afterwards. ElfHosted runs the unmodified upstream TREK release; ElfHosted is not affiliated with or endorsed by the TREK project.

Key Features

• Day-by-day itineraries: Places, routes and times on an interactive map.
• Budgets and expense splitting: Know what the trip costs and who owes whom.
• Packing lists: Shared checklists so nobody forgets the charger.
• Documents and journals: Keep bookings with the trip and record the story as it happens.
• Calendar feeds and share links: Put the itinerary in your calendar and share a read-only view.
• Installable app: Add it to your phone's home screen, with offline support for the trip itself.
• Plan with your AI assistant: Connect Claude, ChatGPT or another MCP client and let it build the trip with you. Every change it makes shows up in TREK straight away.
• Email notifications: Trip updates and password resets arrive by email, with nothing to set up.
• Read-only API: Show your trips on a dashboard or hand them to other apps with an API key you control.

Why Run TREK on ElfHosted?

A trip plan is only useful if it is there when you land. ElfHosted keeps your TREK instance online and backed up.

• Managed and maintained: Your instance is provisioned in minutes, kept updated, and backed by friendly humans on Discord.
• One dashboard: Sits alongside the rest of your ElfHosted subscription, no servers to run yourself.
• Persistent and backed up: Your data survives restarts and upgrades.
• Simple subscription: One flat monthly price with a 7-day trial, cancel anytime.

Frequently Asked Questions

How do I log in?
TREK has its own login. Your account is the instance administrator, under the email address on your ElfHosted account: click Forgot password? on TREK's login page and use the link it emails you to set your password.

Can I share a trip with people who do not have an ElfHosted account?
Yes, with a share link. Anyone with the link can view the shared trip. Collaborators who edit the trip sign in through your ElfHosted login.

Can an AI assistant plan a trip for me?
Yes. Switch on TREK's MCP server in its admin panel, add your TREK address to Claude, ChatGPT or another assistant that supports MCP, and approve it in your browser. It can then create trips, add places and days, build packing lists and track costs, and you choose what it may change. Our docs walk through it.

Is this the official TREK?
It is the unmodified TREK release, run for you by ElfHosted. ElfHosted is not the TREK project.