Route Overview: Northern Corridor Across America

The Northern Corridor via I-90 covers 2,850 miles in 42-45 hours of driving time, passing through Seattle, Spokane, Missoula, Billings, Rapid City, Chicago, Cleveland, and NYC. This route maximizes national park access including Yellowstone and Badlands.

An alternative Mixed Route via I-90/I-80 spans 3,100 miles through Boise, Salt Lake City, and Cheyenne, showcasing Utah's canyon country before rejoining I-90 at Chicago.

This itinerary follows the Northern Corridor for optimal national park coverage.

Climate & Seasonal Conditions by Region

Best Time to Travel This Route

Summer (June-August) provides the optimal window with reliable road conditions, full Yellowstone access, and all mountain passes open, though expect peak pricing and crowds. Book Yellowstone camping 6 months ahead, and prepare for temperatures ranging from 40°F mornings to 85°F+ afternoons.

Spring (May-early June) offers 20-30% lower pricing with fewer crowds but risks lingering snow at high elevations, with Yellowstone's south loop opening mid-May.

Fall (September-October) brings spectacular foliage to the Great Lakes and Northeast, but Montana and Wyoming risk snowstorms after September 15.

Winter (November-April) is not recommended due to pass closures and limited park access.

Suggested 14-Day Itinerary

Day 1: Seattle to Spokane (280 miles, 4.5 hours)

Start your adventure by picking up your El Monte RV from the Seattle location. After orientation and vehicle walkthrough, hit the road eastbound on I-90, climbing into the Cascade Mountains. The highway rises from sea level to Snoqualmie Pass at 3,022 feet within 50 miles. Stop at Snoqualmie Falls for the 268-foot waterfall viewpoint. The landscape transforms dramatically as you descend eastward, shifting from Douglas fir rainforest to ponderosa pine to sagebrush within 30 miles.

RV Camping: Spokane KOA Holiday offers full hookups 10 miles from downtown. Riverside State Park provides riverside sites with basalt rock formations.

Additional RV Camping Options: North Spokane RV Campground is a well-reviewed stop with full hookups and solid amenities near Spokane. For resort-style facilities, consider Ponderosa Falls RV Resort. If you prefer scenic riverside camping, Riverside State Park Bowl and Pitcher Area offers a nature-rich setting close to the city.

Day 2: Spokane to Missoula (200 miles, 3.5 hours)

Cross into Montana on I-90, following the Clark Fork River valley through forested mountain terrain. Stop in Coeur d'Alene, Idaho, to see the lake and waterfront district. Missoula sits at the convergence of five mountain valleys.

RV Camping: Missoula KOA provides mountain views and full amenities.

Day 3: Missoula to Bozeman (240 miles, 4 hours)

Head east on I-90 toward Yellowstone. Stop in Butte to tour the Berkeley Pit, a former open-pit copper mine, with an observation platform and interpretive displays where visitors can see the pit safely from above. Continue over the Continental Divide at Homestake Pass before descending to Bozeman.

RV Camping: Bozeman Trail RV Park by Starry Night Lodging is a well-reviewed RV park with full-service sites and good access to the main highway.

Day 4: Bozeman to Yellowstone National Park (90 miles to entrance, full day)

Enter Yellowstone National Park through the north entrance at Gardiner. Allocate a full day for the Grand Loop Road circuit. Priority stops include Old Faithful geyser basin, Grand Prismatic Spring, the Grand Canyon of the Yellowstone with Upper and Lower Falls, and wildlife viewing in Lamar Valley. The park sits on a supervolcano, creating the largest concentration of geysers on Earth.

RV Camping: Yellowstone’s RV camping fills up far in advance during peak season. Fishing Bridge RV Park is the only campground inside the park with full hookups for RVs, and sites are highly competitive. Other in-park campgrounds accommodate RVs but generally lack full hookups and require advance reservations. If Yellowstone’s internal sites are full or you want more amenities, several excellent private RV parks just outside the park offer full-service sites, including Grizzly RV Park & Cabins.

Day 5: Yellowstone to Billings (310 miles, 5.5 hours)

Exit Yellowstone through the east entrance on the Buffalo Bill Cody Scenic Byway into Cody, Wyoming. This route passes through high-elevation valleys with wildlife viewing. Tour the Buffalo Bill Center of the West, housing five museums covering Western art, Plains Indians culture, and natural history.

RV Camping: Billings KOA Journey provides full-service sites.

Day 6: Billings to Rapid City (440 miles, 6.5 hours)

Cross eastern Montana's prairie landscape before entering South Dakota's Black Hills. The terrain transitions as you approach Rapid City.

RV Camping: Rapid City KOA serves as a central base for Black Hills exploration.

Day 7: Black Hills Exploration Day

Visit Mount Rushmore National Memorial early, then drive the Needles Highway (SD-87) through granite spires. Tour Custer State Park for wildlife viewing, including the 1,300-strong bison herd. Consider Wind Cave National Park for cave tours showcasing unique calcite boxwork formations.

Day 8: Rapid City to Badlands to Sioux Falls (380 miles, 6 hours)

Depart early for Badlands National Park, 75 miles east. The 30-mile Badlands Loop Road showcases eroded buttes formed from ancient river sediments. Walk the Door Trail or Notch Trail for closer views. Continue east across South Dakota's agricultural heartland to Sioux Falls.

RV Camping: Sioux Falls KOA Journey offers highway access.

Day 9: Sioux Falls to Chicago (520 miles, 8 hours)

Cross Minnesota farmland and enter the Great Lakes region. The route transitions from prairie to glacially carved lake country through Wisconsin, then follows Lake Michigan's shore into Illinois. Arrive in Chicago by late afternoon.

RV Camping: Chicago Northwest KOA Holiday offers hookups, laundry, showers, Wi-Fi, and family amenities. About 55-60 miles northwest of downtown Chicago, it’s one of the most popular RV parks for travelers visiting the Chicago area, and near transit for city access if you want to explore.

Day 10: Chicago Exploration Day

Explore Chicago via public transit from the nearby Metra station. Visit Millennium Park to see Cloud Gate sculpture. Tour the Art Institute of Chicago or walk the Lakefront Trail. Architecture boat tours along the Chicago River provide city perspectives. The Willis Tower Skydeck offers views across four states.

Day 11: Chicago to Cleveland (345 miles, 5.5 hours)

Depart Chicago eastbound on I-90. The route passes through industrial landscapes before entering Ohio's lake country. Stop in Toledo to see the Toledo Museum of Art with its renowned glass collection, or stretch your legs along the Maumee River waterfront.

Continue east along Lake Erie's southern coastline to Cleveland. The city offers attractions, including the Rock & Roll Hall of Fame and the historic West Side Market. Evening views of downtown Cleveland from the lake are particularly striking.

RV Camping: Cleveland KOA in Streetsboro provides highway access with full hookups and amenities. Geneva State Park offers lakefront sites on Lake Erie for a more natural setting.

Day 12: Cleveland to Central New York (330 miles, 5.5 hours)

Cross into Pennsylvania on I-90, passing through Erie, where you can stop at Presque Isle State Park for views across Lake Erie.

Continue east through Pennsylvania's northwestern corner, entering New York State near Chautauqua Lake. The route passes through rolling Appalachian foothills. Consider detouring to Allegheny National Forest for hiking or scenic drives through old-growth forest.

RV Camping: Cooperstown KOA provides a scenic overnight in central New York near the Baseball Hall of Fame.

Day 13: Central New York to Hudson Valley (180 miles, 3.5 hours)

Head south on I-87, descending into the Hudson Valley along the Hudson River. Stop in Albany to tour the New York State Capitol or explore downtown. Continue south into the scenic Hudson Valley with views of the Catskill Mountains to the west.

RV Camping: Newburgh/New York City North KOA offers Hudson River views with proximity to West Point.

Day 14: Hudson Valley to New York City (90 miles, 2 hours plus exploration)

Complete the final leg south on I-87 toward New York City. Cross the Tappan Zee Bridge for Hudson River views with Manhattan's skyline visible on clear days. Stay at Liberty Harbor RV Park in Jersey City, offering Manhattan skyline views and ferry access to lower Manhattan.

Use the PATH train or ferry to visit Manhattan. Walk the Brooklyn Bridge, explore Central Park, or visit the Metropolitan Museum of Art. The 9/11 Memorial & Museum provides a moving conclusion to your cross-country journey.

Return your El Monte RV to the New Jersey location. Note that this one-way rental must be arranged in advance.

RV Rental Requirements & Practical Considerations

Class C motorhomes, 25-30 feet, provide the ideal balance for this route. Key features include a backup camera, generator, heating, and air conditioning.

Practical Road Trip Tips

• Limit driving days to 300-350 miles when possible.
• Depart by 8-9 AM to reach destinations by mid-afternoon.
• Three major passes require attention: Snoqualmie Pass, Homestake Pass, and Lookout Pass. All remain open year-round with winter chain requirements.
• Pack emergency supplies including a road atlas, first aid kit, spare water, non-perishable food, and a radio.

Tolls and Road Fees

Eastern segment tolls include Indiana Toll Road, about $10 for RVs, Ohio Turnpike, about $25-40, and New York State Thruway, about $20-35. Total toll costs range from $60-100.

National park fees include Yellowstone at $35 per vehicle, Badlands at $30, and Wind Cave with free entrance, though cave tours cost about $12-30. Non-U.S. residents must pay an additional $100 per person fee on top of the standard entrance fee.

For U.S. residents visiting two parks, the America the Beautiful Annual Pass, $80, is cost-effective if considering other park visits in the year. Non-U.S. residents should compare the $250 Annual Pass against individual park fees plus the $100 per person surcharge at each park.

FAQs

Is 14 days enough time to comfortably drive from Seattle to New York City in an RV?

Yes, 14 days provides comfortable pacing with time for major attractions and rest days. This schedule averages 235 miles per driving day with two full exploration days built in. Travelers can complete the route in 10-12 days by reducing park time, though this creates a rushed experience.

Do I need a special license to drive a large RV on this route?

No, standard driver's licenses cover all Class A, B, and C motorhomes under 26,000 pounds GVWR in all states on this route. International visitors should verify their country's license is accepted or obtain an International Driving Permit.

Can I avoid tolls between Chicago and New York City?

Yes, but alternative routes add significant time and mileage. US-20 runs parallel to I-90, avoiding tolls but increasing travel time by 2-3 hours. The time and fuel costs typically outweigh toll savings.

Are there parts of this route where I won't have cell phone coverage?

Yes, expect limited or no coverage in eastern Montana, portions of Wyoming outside major towns, and rural Badlands areas. Download offline maps before departure and carry a paper atlas. National parks have spotty coverage even on major networks.

What's the highest elevation I'll encounter, and do I need to worry about altitude sickness?

The highest paved elevation is Homestake Pass in Montana at 6,329 feet. Yellowstone's roads reach 8,859 feet at Dunraven Pass. These elevations rarely cause issues for healthy individuals, though some experience minor headaches. Drink extra water and take breaks if needed.

Can I bring my pet on this cross-country RV trip?

Yes, RVs accommodate pets well and most campgrounds accept them, though fees may apply. National parks allow leashed pets in campgrounds and along roadsides but restrict them on most trails. Keep pets leashed and carry vaccination records.

Are there any low-clearance bridges or tunnels I need to avoid with a large Class A motorhome?

Yes, approaching New York City requires clearance planning for RVs over 12 feet tall. The Holland Tunnel has 12-foot-6-inch clearance. Use the George Washington Bridge upper level with 14-foot clearance or stay in New Jersey and use public transit to visit Manhattan.

Ready to Plan Your Cross-Country Adventure?

Ready to plan your cross-country adventure? Browse RV options and book your rental at El Monte RV, or visit one of their rental locations to start your journey.