Route 66 from Chicago to Santa Monica

Route 66 ran from Chicago to Santa Monica across eight states, and the National Park Service puts it at about 2,400 miles. U.S. Highway 66 is "popularly known as Route 66 or the Mother Road", in the Park Service's words. Five interstates replaced it piece by piece: I-55, I-44, I-40, I-15 and I-10.

Our Route 66 road trip drives the corridor from Chicago to Santa Monica, in Los Angeles County, next door to Los Angeles. We read the figures below on 30 October 2026 on National Park Service, Bureau of Land Management, state park, NOAA and operators' own pages. Distances and drive times are our own routing along the interstates, not the old road's length.

How long is Route 66 from Chicago to Santa Monica?

Route 66 is about 2,400 miles long by the National Park Service's count, but no single authority gives one figure. The Senate bill to make it a National Historic Trail also says "approximately 2,400 miles". The City of Holbrook, Arizona, and Santa Monica's tourism office both print 2,448 miles. The Park Service's own state pages, each marked "approx.", add up to 2,446.

The table below works as a Route 66 map in miles: the eight states in the order you drive them, with the Park Service's figure for each.

Driving the corridor today is a different measurement. By the interstates, through the twelve cities in the next section, our own routing gives 2,154 miles and about 38 hours 40 minutes at the wheel. Our router runs slow against the Park Service's own drive times, so treat that as the upper end. How long to drive Route 66 in days depends on the stops you want.

Where are the start in Grant Park and the end on Santa Monica Pier?

The road's eastern end was "at Grant Park in Chicago", according to the National Park Service. Navy Pier has added its own "Route 66 Ceremonial Start" sign, which it calls a symbolic starting point. Passports for the road are stamped at Harry Caray's on the pier. A "Begin Historic Route 66" sign at Adams Street is often photographed, but no official page we read names it as the start. Our routing starts from Adams Street and Michigan Avenue.

Santa Monica Pier carries the End of the Trail sign. Santa Monica Travel & Tourism says the pier was dedicated as the traditional end of the route in 2009, when the sign went up. The same office notes that the road technically ends at Lincoln Boulevard and Olympic Boulevard. Santa Monica itself was first connected to the highway in 1936.

The pier is open daily from 6 a.m. to 10 p.m., and its pages mention no fee for the sign. The Pier Bridge is being replaced, with completion expected by the end of 2027. Santa Monica's visitor centres, one of them a kiosk at 1400 Ocean Avenue, explain how to get a certificate of completion for the drive.

Which cities split the 2,154-mile interstate drive into legs?

The interstate drive splits into eleven legs between twelve cities, from Chicago through St. Louis, Tulsa and Albuquerque to Santa Monica. The legs follow mostly I-55, I-44, I-40 and I-15, and the times assume free-flowing traffic.

The pre-1937 line through Santa Fe is the one detour worth pricing. The Park Service says the first alignment ran north from Santa Rosa to Santa Fe before turning south to Albuquerque. By our own routing, Amarillo to Albuquerque by way of Santa Fe is 344 miles against 289 direct.

Kansas needs no leg of its own. The state's 14 miles run off the interstate through Galena and Baxter Springs, a short detour from I-44 on the drive from Springfield, Missouri, to Tulsa.

How many nights does the drive from Chicago to Santa Monica need?

A Route 66 road trip from Chicago to Santa Monica needs twelve nights at the least between leaving Chicago and reaching the pier. That keeps every day under about five and a half hours at the wheel. The split below is our judgement, built on the legs above.

With about 16 nights, add a second night in St. Louis, Tulsa, Gallup and Kingman, and a night or two in Chicago before the start.

Grand Canyon National Park is the longest detour worth planning a day for. The Park Service puts the park about 60 minutes from Interstate 40 at Williams and 90 minutes from Flagstaff. Grand Canyon is one of the eleven parks that charge a $100 non-resident fee for each person aged 16 and over. Our guide to US national park fees for international visitors explains how that fee and the annual pass work.

What can you stop for between the Gateway Arch and the Blue Whale of Catoosa?

The stops between St. Louis and Tulsa are mostly free or cheap, and the Gateway Arch is the one that needs a ticket. We list only Route 66 stops with an operator's or a state's own page.

• Gateway Arch National Park, St. Louis. The tram to the top costs $15 to $19 for an adult, depending on the date. The museum and visitor centre are free, open from 9 a.m. to 6 p.m. outside summer and closed on Thanksgiving, Christmas and New Year's Day. The Arch is not on the $100 non-resident list.
• Chain of Rocks Bridge, St. Louis. Great Rivers Greenway opens the old bridge daily from 7 a.m. to 30 minutes after sunset and lists no fee. On 30 October 2026 it was reachable from the Missouri side only, because the Illinois canal bridge was closed for construction with no end date.
• Route 66 State Park, Eureka. The visitor centre is a roadhouse built in 1935, the Bridgehead Inn, open daily from 9 a.m. to 4 p.m. from March to October. From November to February it opens only in the second week of December, while the grounds stay open all year.
• Meramec Caverns, Stanton. The cave's own site charges $30.50 from age 12 and $16.50 for children aged 5 to 11, for a tour of one hour and twenty minutes. The cave closes from 5 January to 27 February.
• Galena and Baxter Springs, Kansas. The Park Service suggests driving the original roadbed over the Galena viaduct and walking across the rainbow marsh arch bridge. In Baxter Springs a restored Phillips 66 station works as a visitor centre. We could read no opening hours for any business in Galena.
• Blue Whale of Catoosa, Oklahoma. The Park Service names it among Oklahoma's "handmade wonders". The City of Catoosa's own page could not be read when we checked, so call 918-857-0676 before making the detour.

Which stops between Clinton and Albuquerque have hours you can plan around?

The Oklahoma Route 66 Museum in Clinton and the Blue Hole at Santa Rosa are the stops between Oklahoma City and Albuquerque with published hours. Oklahoma Tourism counts more than 400 miles of the road in the state and calls them "the nation's longest driveable stretch". The museum, run by the Oklahoma Historical Society, is off I-40 at exit 65.

• Oklahoma Route 66 Museum, Clinton. Adults pay $10, seniors aged 62 and over $8, students aged 6 to 18 $5, and veterans and children 5 and under go free. The museum opens Monday to Saturday from 9 a.m. to 5 p.m. and closes on 11 November, 26 and 27 November and 24 and 25 December 2026.
• Tower Station and U-Drop Inn Café, Shamrock, Texas. The City of Shamrock restored the station, a National Register entry in Texas, according to the Park Service.
• Blue Swallow Motel, Tucumcari, New Mexico. The Park Service's corridor programme paid for work on the motel's sign.
• Blue Hole, Santa Rosa, New Mexico. The spring is 81 feet deep, 60 feet across and a constant 61°F, with visibility of 100 feet. Parking costs $10 a vehicle a day, by cash, card or Apple Pay. The site opens from 10 a.m. to 7 p.m. on weekdays and from noon to 7 p.m. at weekends. The operator's own pages disagree on lifeguards, so do not count on one.

Albuquerque has an 18-mile stretch of the old road through the city, enough for the spare day there.

Where can you still drive the old road in Arizona and the Mojave?

Arizona keeps some of the longest unbroken stretches of the old road left to drive. The Park Service counts about 350 miles of it in the state. Interstate 40 bypassed the 84 miles between Seligman and Kingman through Peach Springs, so the road there runs on its own. The Bureau of Land Management counts its 158-mile corridor in northwestern Arizona among the longest continuous stretches remaining.

Petrified Forest National Park is "the only national park that contains a segment of Route 66", in the Park Service's words. A pullout built in 2006 marks the old alignment. The park charges $25 a private vehicle, takes no cash, and is not on the $100 non-resident list. In Holbrook, the Wigwam Motel listed its queen wigwam at $105 a night plus tax and its double full at $115 on 30 October 2026.

Seligman is where Angel Delgadillo "spearheaded efforts to preserve and promote U.S. Route 66", according to the BLM. His work launched Arizona's annual Fun Run, held on the first weekend in May. In Kingman one admission ticket covers three venues, among them the Arizona Route 66 Museum; the BLM's page gives no price.

West of Kingman the BLM's 42-mile section to Topock is "largely intact and fully drivable", with steep grades, tight switchbacks and the hairpins of Sitgreaves Pass. Oatman, on that road, is known for its free-roaming burros and daily staged gunfights. Our legs table takes the interstate instead.

California's 345 miles survive "in fragments", the Park Service says, with "not a single road" leading to the piers at Santa Monica. The Park Service's California list names El Garces in Needles and the Harvey House Railroad Depot in Barstow. Further west it names Wigwam Village #7 in San Bernardino and the Colorado Street Bridge in Pasadena.

When do the clocks change between Amarillo and Needles?

The clocks on the drive west go back an hour twice, and the season decides where the second change falls. Chicago, St. Louis, Springfield in Missouri, Tulsa, Oklahoma City and Amarillo all keep Central time. Federal rules put the Central–Mountain line on the Texas–New Mexico boundary, so Albuquerque and Gallup keep Mountain time. The Mountain–Pacific line follows the Arizona–California boundary.

Arizona does not observe daylight saving time, with the exception of the Navajo Nation, which does. In 2026 daylight saving time ran from 8 March to 1 November at 2 a.m. local time.

In winter the drive sets the clock back an hour at the New Mexico line and another at Needles. In summer the second change comes earlier, at the Arizona line, and California keeps Arizona's time.

When are the Mojave's heat and Flagstaff's snow a problem for the drive?

The Mojave leg is at its hottest in July, and Flagstaff gets most of its snow from November to March. Spring and autumn suit the whole Route 66 road trip. The Park Service calls the stretch from Needles to Barstow "one of the hottest legs of the road anywhere". Flagstaff's airport weather station sits at 7,003 feet.

Needles averages 31 days at 90°F or more every July, and about 177 such days a year. These are averages of the daily high, not records. Drive the Mojave early in the day and carry water.

Flagstaff's snow falls mostly from November to March: 8.2 inches in November, 18.5 in December, 20.9 in January, 19.3 in February and 15.6 in March. New Mexico's transport department tells winter drivers to check nmroads.com, or dial 511 in the state or 1-800-432-4269. Our guide to driving in the USA as a visitor covers the rules of the road.

What happens on 11 November 2026, the Route 66 centennial?

The Route 66 centennial falls on Wednesday 11 November 2026. Missouri State Parks and the Bureau of Land Management both date the road's establishment to 11 November 1926. The National Park Service gives only the year, and says the highway was decommissioned in 1985.

We found no national ceremony planned for the day. The federal law of 23 December 2020 that set up the Route 66 Centennial Commission names no date. The Commission runs on donations only and ends on 31 December 2026. The centennial's national calendar is run by a nonprofit, the Route 66 Road Ahead Partnership, and lists community events.

• Springfield, Illinois, 11 November 2026: the Illinois Route 66 Scenic Byway's conference, from 7 a.m. to 3 p.m., at $75 for byway members and $125 for others, then a $150 evening concert from 6 p.m. headlined by Starship.
• Online, 11 November 2026: a free Zoom talk by the Society for Commercial Archeology, "The Afterlife of Route 66", at 8 p.m. Eastern.
• Eureka, Missouri, 7 November 2026: a free celebration at Route 66 State Park from 10 a.m. to 4 p.m.
• Albuquerque, 7 November 2026: "Chrome & Neon at 100", with a neon lighting ceremony and a time capsule.

The Park Service offers a Route 66 Centennial passport stamp and a rack card at its sites along the road.

On 30 October 2026 the road was not a National Historic Trail. The Route 66 National Historic Trail Designation Act was introduced in both houses on 18 September 2025.

The Senate bill, S. 2887, was reported by the Energy and Natural Resources Committee on 17 September 2026 and placed on the Senate calendar as No. 644. The House bill, H.R. 5470, had a subcommittee hearing on 2 September 2026. Neither had passed a chamber in the congressional records we read, last updated on 30 September 2026 for the Senate and 6 October 2026 for the House.

How do Oklahoma's cashless turnpikes and a one-way hire car change the cost?

Oklahoma's turnpikes take no cash: all 12 have been cashless since 20 November 2024. Two of them carry I-44 on this drive: the Will Rogers Turnpike from the Missouri line to Tulsa, and the Turner from Tulsa to Oklahoma City. Cameras photograph the plate and the Turnpike Authority mails an invoice to the car's registered owner.

The PlatePay rate is higher than the PIKEPASS rate, and we could read no toll amount. Ask your rental company how it handles tolls before you leave. The old road itself avoids both turnpikes.

Illinois's usual route is simpler. The Illinois Tollway's system page lists five roads, and I-55, the interstate our routing takes towards St. Louis, is not on it.

A car picked up in Chicago and returned in Los Angeles is a one-way hire, which can carry a drop charge. Our guide to renting a car in the USA explains that, at Enterprise, the charge is disclosed at booking. No rental company page we read gave a price for this route, so compare the total before you book.