Get the eSIM with the best signal on your route
Walking the Camino? Driving Iceland's Ring Road? TrailSim compares carrier coverage along your exact route and tells you which eSIM keeps you connected — plus an offline map of every dead zone, free with your order.
How it works
From route to connected in four steps.
Pick your route
Choose a supported route or tell us your own itinerary.
We compare coverage
We compile public carrier coverage data and community reports for every segment of the route.
Get your match + map
You get the best-signal eSIM recommendation and an offline GPX/PDF map marking the dead zones.
Land connected
Install the eSIM in minutes before you fly. No SIM swapping, working data the moment you arrive.
Popular routes
Routes we're analyzing now — more added every week.
Camino de Santiago
Camino Francés · Spain · ~780 km on foot
Iceland Ring Road
Route 1 · Iceland · ~1,330 km by car
Tour du Mont Blanc
France · Italy · Switzerland · ~170 km on foot
West Highland Way
Scotland · ~154 km on foot
Route 66
USA · Chicago to Santa Monica · ~3,940 km by car
New Zealand South Island
Christchurch loop · ~1,500 km by car or bike
Same route, very different signal
Illustrative example of what a TrailSim route report shows: on remote trails, carriers can differ by a hundred kilometers of usable signal. Carrier names are revealed in your route report.
Every order includes an offline dead-zone map
A GPX + PDF map of your route with no-signal sections clearly marked. Know before you set off where to download offline maps, and where to tell family you'll be out of reach. Works fully offline in Gaia GPS, Komoot, Organic Maps and any GPX app.
Why not just any travel eSIM?
Generic travel eSIM
- Sold by country, not by route
- Coverage map = the whole nation
- You find the dead zones the hard way
TrailSim
- Matched to your exact route
- Segment-by-segment coverage comparison
- Offline dead-zone map included
Local SIM on arrival
- Airport queues and language barriers
- Might be the wrong carrier for your trail
- No coverage info for remote sections
Frequently asked questions
What is TrailSim?
TrailSim recommends the eSIM with the best signal for your specific hiking, cycling or road-trip route, based on public carrier coverage data and community reports compiled segment by segment. Every order includes an offline coverage map (GPX/PDF) marking the dead zones along your route.
Where does the coverage data come from?
We compile publicly available carrier coverage maps and community coverage reports, then compare them segment by segment along each route. We clearly mark sections where data is limited.
Does my phone support eSIM?
Most phones released since 2019 support eSIM, including iPhone XS and later, Google Pixel 3 and later, and most recent Samsung Galaxy models. Your phone must also be carrier-unlocked.
What is the offline dead-zone map?
A GPX and PDF map of your route with signal, weak-signal and no-signal sections marked. It works fully offline in apps like Gaia GPS, Komoot or Organic Maps.
Can I buy an eSIM on TrailSim today?
We are onboarding routes now. Tell us your route and email, and we'll send your route coverage report and notify you the moment checkout opens for it.
Know your signal before you go
Tell us your route — we'll send the coverage report and the best eSIM match for it.
Check my route