Route 66 Road Trip: Stages, Map and How Many Days

The fact that changes how you plan a Route 66 trip is this: Route 66 was decommissioned as an official US highway decades ago, and it no longer exists as a single unbroken road you can simply follow from Chicago to Santa Monica. What survives is a patchwork — original alignments, frontage roads running beside newer interstates, and sections that have been bypassed, renamed or absorbed entirely. Planning the trip means planning around that patchwork, not around a road that no longer runs the way it once did.

Why the route is not one continuous road

When the interstate highway system was built through the mid-to-late twentieth century, large stretches of the original Route 66 alignment were bypassed or paved over, and the federal designation itself was eventually decommissioned. Since then, the road has survived as a historic route stitched together from preserved sections, state-designated “historic Route 66” segments, and stretches where I-40 or another interstate is now the only practical way to cover the distance. Some original sections are still drivable exactly as they were; others exist only as a name on a map, with the interstate as the modern replacement. 2026 marks its centenary as a designated highway, which has pushed fresh interest into exactly this planning question.

Planning the trip as stages, not one drive

Because the route runs through eight states, most travellers plan it as a series of stages rather than one continuous drive, typically grouped by state or by natural overnight stops:

Stage	Rough states covered
Illinois to Missouri	The Chicago start through St. Louis
Missouri to Oklahoma	Ozark country into the southern plains
Oklahoma to Texas Panhandle	The plains stretch
New Mexico	High desert and Albuquerque
Arizona	Flagstaff, the Grand Canyon detour, the western desert
California	The desert crossing to Santa Monica

This table is a planning shape, not a fixed itinerary — how you group the states depends on how many days you have and where you want to linger, and current road conditions, closures or diversions on any given stage are published by state transportation departments rather than fixed in a travel guide.

How many days it realistically takes

There is no single correct day count, and any article that gives you one specific number is guessing on your behalf. The honest range depends entirely on pace: driving with minimal stops covers the distance in noticeably less time than a trip built around stopping at towns, diners and roadside attractions along the way, which is most of the point for people choosing this route over a faster interstate crossing. Rather than commit to a figure, plan backwards from your actual available time and your appetite for driving versus stopping — a trip built around two to three weeks is commonly discussed for travellers who want real time at the stops, while a faster crossing is possible for those prioritising the drive itself.

What decides your day count more than distance does

• How many stops you actually want. The route’s roadside attractions, historic diners and small-town museums are what most people are driving for, and each one adds time that pure mileage does not capture.
• Whether you follow every original alignment or use the interstate for some stretches. Sticking to preserved historic sections everywhere it is possible takes longer than using I-40 or another interstate for the stretches where the original road no longer offers a practical alternative.
• Your comfort with driving hours per day. A trip planned around shorter driving days with energy left for stops feels completely different from one planned around covering ground.
• Season. Desert stretches in Arizona and California ask more of both car and driver in peak summer heat, which can push a realistic day toward shorter driving hours and more indoor breaks.

Mapping it before you go

Because so much of the original route survives only in fragments, a dedicated Route 66 map — the kind published by heritage associations and several well-regarded guidebooks rather than a generic road atlas — is worth having before you set off, since a standard GPS route will default you onto the interstate rather than the historic alignment unless you specifically route around it. Confirm which sections are currently drivable and which are closed, diverted or simply gone, since this changes over time as roads are maintained, abandoned or restored.

Staying connected across eight states

A route that spans desert, plains and mountain terrain across multiple states will put you through stretches with genuinely thin mobile coverage, which makes a working US eSIM and a downloaded offline map more useful here than on almost any other trip on this site — our guide to using an eSIM for a US road trip covers what to expect between towns. If the Grand Canyon detour off Arizona’s stretch is part of your plan, our seasonal weather guide is worth reading before you commit to that leg, and current data plans are on the pricing page.