Interstate Route Planner: Gas and EV Charging Stops
Pick where you get on and off the Interstate and how far your car goes on a full tank or charge. The planner suggests the last exit with gas or a DC fast charger before you run into your reserve, and lists the rest areas in your direction of travel.
Pick two different exits on the same Interstate.
How the route planner works
Exit numbers on Interstates are mile markers, so the distance between two exits is the difference between their numbers, adjusted at state lines where the numbering starts again. The planner keeps 15% of your range in reserve, then picks the furthest exit with fuel, or with a DC fast charger in EV mode, that you can still reach. It repeats that until the destination is in range.
Only businesses within a mile of the ramps count. If a stretch has no fuel or fast charger inside your usable range, the planner warns you, because the only options there mean leaving the highway or starting full. Fast chargers are the ones tagged with CCS, CHAdeMO or Tesla connectors, or run by fast-charging networks.
Tips for long Interstate drives
- In winter, cold weather can cut EV range by 20–30%: lower the range figure before you plan.
- Rural truck stops are often the only 24-hour fuel for long distances in the West.
- Rest areas can close for repairs. Check the state DOT site before counting on one at night.