Drivers and riders who plan their route on purpose
A sat nav that never auto-reroutes
You chose that road for a reason. Tarmac will never swap it for a faster one without asking.
The problem
Mainstream navigation apps reroute the moment they think they've found a quicker way — dumping you onto a dual carriageway when you planned a mountain pass.

How Tarmac helps
How it works
- Step 1
The plan is canonical
Your saved route is the route. Deviations never overwrite it.
- Step 2
Suggestions, not decisions
When traffic is heavy, Tarmac suggests a diversion and shows the time saving. You tap to accept or ignore it.
- Step 3
Diversions rejoin the plan
Accepted diversions are temporary overlays that bring you back onto your planned route.
FAQ
Questions people ask
What if I take a wrong turn?+
Tarmac guides you back to your planned route rather than inventing a new one.
Can I turn traffic suggestions off?+
Suggestions are just prompts; you can ignore them and carry on.
Does the group see my diversion?+
Each rider confirms their own diversion unless the group is set to organiser-only changes.
Explore more features
Import a Google Maps route
Paste a Google Maps directions link and Tarmac turns it into a proper ride route you can share with your group.
Twisty route planner
Compare the fastest route with the twisty one, side by side, and pick the drive you actually want.
Motorcycle route planner for the UK
Plan UK bike routes with stops, fuel and cafés, then ride them with turn-by-turn that doesn't reroute behind your back.