I-70: Denver → Grand Junction
Two hundred forty-four miles from Denver to Grand Junction, crossing the Eisenhower Tunnel, Vail Pass, and Glenwood Canyon. This is the most demanding stretch of interstate in the region — and the best-equipped for it.
By the numbers.
This corridor needs a plan in winter.
Colorado's traction law applies on I-70 between Morrison and Dotsero — roughly the entire mountain section of this route — from September 1 through May 31, regardless of the forecast. That means all-wheel drive or snow tires with adequate tread, even on a clear day. The Eisenhower Tunnel and Vail Pass are where most winter closures happen. A 250-mile rated EV climbing from Denver to the tunnel at 11,158 feet, with cabin heat running, can lose 30% or more of its range before the descent gives any of it back. Charge fully in Denver and again in Silverthorne before continuing west in winter.
Every stop, start to finish.
Plotted west to east. Scroll the route — each station lights up as you reach it.
The drive, in detail.
I-70 across Colorado is the corridor every other mountain corridor in this region gets compared to, and it earns the comparison. In 244 miles between Denver and Grand Junction, it crosses the highest point on the entire US Interstate System, climbs two of the steepest passes in the state, and threads through a canyon that required engineers to build the highway on stilts. It is also, charging-wise, the best-equipped mountain route in the country — Tesla Superchargers at nearly every town, with EVgo, Electrify America, and ChargePoint filling in the gaps.
That equipment doesn’t make the elevation or the weather negotiable. The Eisenhower Tunnel sits at 11,158 feet. Vail Pass tops out at 10,666 feet. Both routinely close for weather or avalanche control with little notice, especially between November and April, and Colorado’s traction law is in effect on this entire stretch all winter regardless of what the sky looks like when you leave Denver.
This guide runs west from Denver, the direction with the harder climb first. If you’re headed east from Grand Junction, the climb out of Glenwood Canyon toward Vail Pass is the one to plan around instead. For the rest of what’s happening with charging in Colorado, see the Colorado EV charging hub, and for help planning the rest of your trip, see our EV road trip planner.
One more thing before you set your buffers. If a stop on this corridor has ever taken twice as long as the app predicted, that has five specific and predictable causes — cold packs, shared power cabinets, the taper above 80% charge, and the gap between rated and delivered speed. We break down each one in Why Your EV Charging Stop Took Twice as Long as the App Promised.
Quick answers for this drive: what a road trip’s worth of fast charging costs, what to do when a charging stop is broken on arrival, whether you need a Supercharger adapter, whether Tesla or Electrify America is cheaper, and whether the NEVI program is still active.
Driving this corridor between November and April? The winter version of this route — cold-weather range loss, charger derating, and single-stall risk on the passes — is covered in Winter Mountain-Pass Charging: I-70, I-90, and I-84 in Snow.
Carrying the wrong adapter is a common cause of a stalled stop on this corridor. Our NACS vs. CCS vs. J1772 compatibility guide covers exactly which adapter your vehicle needs at any station type.