Charging Your EV Along I-70 in Utah and Colorado

The Route

I-70 cuts through some of the most dramatic landscape in the American West. Red rock canyons in Utah, mountain passes above 11,000 feet in Colorado, and national parks on both sides. It is the kind of drive that sells people on road trips in the first place.

For EV drivers, the corridor has a reputation as a challenge. Long stretches between towns, elevation changes that eat into range, and winter conditions that can cut your battery capacity by a third. All true. But the campground situation is better than you might expect.

We track nine RV parks and campgrounds along this corridor. Five in Colorado, four in Utah. Every one of them either has dedicated EV charging stations or allows campsite charging. That is a 100% EV-friendly rate, the best of any corridor in our directory.

Colorado: Five Parks, All With Charging Stations

Colorado's I-70 corridor runs from the Kansas border through Denver and up over the Continental Divide before dropping into Grand Junction near the Utah line. The parks along this stretch are spread across the state, from the Front Range to the Western Slope.

Utah: Four Parks from Tremonton to Kanab

Utah's parks are more spread out. They cover the northern border near I-84, the Flaming Gorge area, Moab, and the deep south near the Arizona line. If you are coming from Colorado on I-70, Moab is the first logical stop. From there, the route opens up depending on where you are headed.

DC Fast Charging Along the Corridor

Colorado has invested heavily in highway fast charging. The state's first NEVI-funded station opened in Frisco, right off I-70, with 12 chargers making it one of the largest NEVI stations in the country. ChargePoint and the Colorado Energy Office have completed six fast-charging corridors across the state with more than 80 ports along I-70, Highway 50, and other key routes.

Key DC fast charging cities along the Colorado stretch: Denver, Idaho Springs, Frisco, Vail, Glenwood Springs, and Grand Junction all have multiple options from Tesla Supercharger, Electrify America, ChargePoint, and others.

Utah is thinner but improving. The state has about 155 DC fast stations total, with 34 Tesla Supercharger locations. UDOT is building out NEVI-funded stations every 50 miles along major corridors, and Electrify America has 20 stations through a Rocky Mountain Power partnership. Along I-70 in Utah, the gap between fast chargers can stretch to 100 miles or more through the San Rafael Swell. Green River and Salina are the two critical fueling stops in central Utah.

Mountain Passes and Range

The I-70 corridor through Colorado includes some of the highest points on the Interstate Highway System. Vail Pass tops out at 10,662 feet. The Eisenhower Tunnel sits at 11,158 feet. These elevations have real consequences for EV range.

Climbing burns energy fast. Expect to use 30% to 50% more energy going uphill than on flat ground. The good news is that regenerative braking on the way down gives a lot of it back. A westbound trip from Denver to Grand Junction climbs and descends repeatedly; you will not lose as much net range as the elevation profile suggests.

Cold weather compounds the issue. Winter temperatures at altitude can drop well below zero, reducing battery capacity by 20% to 30%. If you are driving this corridor between November and March, plan for significantly reduced range and charge more often.

• Plan for 30% to 50% more energy consumption on mountain climbs.
• Use regenerative braking aggressively on descents. Most EVs recover 10% to 20% of the energy spent climbing.
• In winter, precondition your battery before departing. This uses grid power (or campground power) instead of battery power to warm the pack.
• Do not skip a charging opportunity in the mountains. The next one might be further than you think.
• Grand Junction to Green River, Utah is roughly 110 miles through remote desert. Make sure you leave Grand Junction with plenty of range.

Planning Your Trip

The I-70 corridor works best as a multi-day trip with campground overnight charges supplemented by DC fast charging during the day. Here is a sample approach.

Start in Denver. Charge at the Denver West KOA or at any DC fast charger in the metro area. Head west on I-70, stopping in Frisco or Vail for a fast charge if needed. Make Grand Junction your first or second night, using the KOA's charging stations to top up overnight.

From Grand Junction, continue into Utah. Moab is about 110 miles and makes an obvious overnight stop at HTR Moab. From Moab, you can head south to Kanab (about 280 miles via US-191 and US-89) for Dark Sky RV Campground, or north toward Salt Lake City.

For gear and adapter recommendations, see our adapter guide. For details on charging speeds from different hookup types, see how fast your EV will charge at a campground.