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I-84: Portland → Ontario

Three hundred seventy-four miles from Portland through the Columbia River Gorge to the Idaho border at Ontario. The Gorge brings wind and ice. The Blue Mountains east of Pendleton bring the steepest grade on the route.

374
miles
14
fast stops
84
mi · longest gap
3,451
ft · summit
Route overview

By the numbers.

Miles
374
Stations
14
Highest Elevation
3,451 ft
Best Season
May to October
Winter Advisory

This corridor needs a plan in winter.

Two separate sections of this route get winter advisories for different reasons. The Columbia River Gorge, between Troutdale and The Dalles, gets sustained winds that can exceed 50 mph and freezing fog that ices the road surface even when it isn't actively snowing. Cabbage Hill, the grade between Pendleton and La Grande through the Blue Mountains, is steep enough that ODOT posts chain requirements most winters. Check ODOT TripCheck for both the Gorge and Cabbage Hill separately before a winter run — conditions in one don't tell you anything about the other.

The corridor

Every stop, start to finish.

Plotted west to east. Scroll the route — each station lights up as you reach it.

MILE 0 START
85
Portland
Multi-network · 350 kW max · 4 stalls
CCSNACS
Portland has the densest charging in the state. Top off fully here — the Gorge segment ahead has real charging, but the spacing gets wider once you're past Hood River.
MILE 17
85
Troutdale
Multi-network · 350 kW max · 4 stalls
CCSNACS
Troutdale marks the start of the Columbia River Gorge. The Tesla Supercharger here is the last stop before the Gorge's narrow stretches and is worth using if you're not already full, since the next reliable fast charging is 35 miles east at Hood River.
MILE 54
85
Hood River
Multi-network · 350 kW max · 4 stalls
CCSNACS
Hood River sits at the heart of the Gorge and is a legitimate destination in its own right — windsurfing, breweries, and a walkable downtown a few minutes from the Tesla Supercharger and an EVgo site. Wind here is a feature, not a bug, but it also means winter ice forms fast on the bridge approaches. Check conditions before continuing east in cold weather.
MILE 64
85
The Dalles
Multi-network · 350 kW max · 4 stalls
CCSNACS
The Dalles is the last town with real services before the Gorge opens into the high desert. An Electrify America site here is the practical option. East of here, the landscape changes fast — from forested river canyon to dry grassland within 20 miles.
MILE 104
85
Biggs Junction
Multi-network · 350 kW max · 4 stalls
CCSNACS
Biggs Junction is a NEVI-funded site under construction at a Pilot Flying J, targeting Q4 2026, with 4 ports at 150 kW. Until it opens, this is a gap — the junction with US-97 has fuel and food but no fast charging yet. Plan to arrive here with enough margin to reach Boardman or back to The Dalles if needed.
MILE 188 LONGEST GAP
85
Boardman
Multi-network · 350 kW max · 4 stalls
CCSNACS
A second NEVI award, this one funded for a Greenlane site targeting Q2 2027. Like Biggs Junction, this is currently a planning gap rather than a working stop. Boardman has truck-stop services in the meantime, none of them fast EV charging as of this writing.
MILE 234
85
Pendleton
Multi-network · 350 kW max · 4 stalls
CCSNACS
Pendleton is the last stop before the climb over the Blue Mountains. A Tesla Supercharger here is the practical charge-up point before Cabbage Hill. If you're not driving a Tesla or NACS-equipped EV, this is the point to seriously evaluate your remaining range — there is nothing meaningful between here and La Grande.
MILE 258 PASS
85
La Grande
Multi-network · 350 kW max · 4 stalls
CCSNACS
The climb from Pendleton to La Grande over Cabbage Hill is the steepest sustained grade on this corridor — a 6% downgrade for trucks heading west, which gives you a sense of what it is climbing east. An EVgo site in La Grande is the recovery stop. Regenerative braking on the descent into La Grande from the summit recovers a meaningful chunk of what the climb cost, but don't count on it covering the difference.
MILE 304
85
Baker City
Multi-network · 350 kW max · 4 stalls
CCSNACS
Baker City has a Tesla Supercharger and is the last town of any size before Ontario and the Idaho border. Historic downtown is a few minutes off the highway if you want a real meal during your stop.
MILE 374 FINISH
85
Ontario
Multi-network · 350 kW max · 4 stalls
CCSNACS
Ontario sits on the Idaho border and is the natural handoff point to the Snake River Plain corridor on the Idaho side. A Tesla Supercharger and an EVgo site cover the crossing. See our <a href="/idaho/i-84/">Idaho I-84 guide</a> for the route continuing east toward Boise and Twin Falls.
About this route

The drive, in detail.

I-84 across Oregon is really three different drives stitched together. From Portland through the Columbia River Gorge to The Dalles, it’s a scenic river-canyon route with strong charging and a wind problem. From The Dalles to Pendleton, it’s 130 miles of high desert with two NEVI-funded sites still under construction and not much else. From Pendleton to the Idaho border, it’s a climb over the Blue Mountains followed by a long descent into the Treasure Valley.

The gap between The Dalles and Pendleton is the one to plan around. Biggs Junction and Boardman both have NEVI awards in the pipeline — Biggs Junction under construction for a Q4 2026 opening, Boardman funded for Q2 2027 — but neither is live yet. Until they are, that stretch is the longest charging gap on this corridor, and it falls in a region where summer heat and winter cold are both extreme.

This guide runs west to east, Portland to Ontario, which is also the direction of the climb out of the Gorge and over the Blue Mountains. If you’re continuing into Idaho, the I-84 Idaho guide picks up where this one ends. For the rest of what’s happening with charging in Oregon, see the Oregon EV charging hub, and for help planning the rest of your trip, see our EV road trip planner.