Motion Sickness: Chicago to Santa Monica Drive
The Chicago to Santa Monica trip covers about 2448 miles (3939 km) and takes around 38 hours. The terrain is mixed (urban, plains, desert, mountain), which makes it a moderate motion sickness risk route.
Route 66 covers 2,448 miles across 8 states, with terrain ranging from Illinois plains to New Mexico mountains to Arizona desert. Motion sickness risk varies dramatically by section. The longest sustained mountain sections are in New Mexico (Continental Divide) and Arizona (Flagstaff to Williams). Most travelers complete Route 66 over 10 to 14 days, which limits cumulative motion sickness fatigue.
Key facts
- The Chicago to Santa Monica trip covers about 2448 miles, which is 3939 km.
- It takes about 38 hours.
- The terrain is mixed (urban, plains, desert, mountain), which puts the route in the moderate band for motion sickness.
- 3 sections are flagged as motion sickness pressure points, starting with Sandia Mountains.
- Steadiest place to sit: Driver's seat, rotating between travelers if multiple drivers.
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Where Motion Sickness Hits Hardest
The sections most likely to trigger motion sickness are: Sandia Mountains (New Mexico), Flagstaff to Williams (Arizona), Cajon Pass (final California stretch). Route 66 is a slow-travel road trip. Take breaks every 90 minutes. The 2026 centennial means routes will be busier - plan stops in advance.
Route facts, checked at the source
Each fact below was checked against the linked official or operator page.
- Length and endpoints: 2,448 miles from Chicago to Santa Monica across eight states, established 1926. nps.gov
- Centennial: 2026 is the Route 66 centennial, the 100th anniversary of US Route 66. route66centennial.org
Best Seat for Motion Sickness on This Drive
Driver's seat, rotating between travelers if multiple drivers.
Going on the Chicago to Santa Monica drive? Set it up first
Set it up before you pull out, not at the first lay-by. Dizzout is a drug-free app that plays precisely calibrated audio through any headphones you already own, wired or Bluetooth, with relief in about 90 seconds. Free to try.
Before you need it: find out how prone you are
Take the free 2-minute testTwo minutes, no sign-up, and it ends with a drug-free plan to prepare.
Put it on your phone before you go
Free to try, no card needed. Or go straight to the App Store or Google Play.
Scan to open on your phoneOn a computer? Dizzout installs on your phone. Scan the code, or open dizzout.com/get on your phone and it'll take you straight to the right store.
Know someone who gets motion sick?
Send them the app that helps stop it, drug-free, in about 90 seconds, works with any headphones. Free to try.
Prevention Tips for the Chicago to Santa Monica Drive
- Have Dizzout downloaded before you start, so it is ready the moment symptoms begin
- If you plan to take an over-the-counter tablet such as Bonine or Dramamine, those need 30 to 60 minutes before departure to do anything. Ask a pharmacist first
- Eat lightly before the drive; a heavy meal makes symptoms worse for most people
- Take breaks every 90 minutes minimum on long stretches
- Keep the car cool and well-ventilated
- Avoid reading or phone use in the back seat
Which of those actually hold up when they are tested is a separate question, and we keep the answers in one place: the remedy verdicts, ranked by evidence.
Frequently asked questions
How long is Route 66?
2,448 miles from Chicago to Santa Monica, per the National Park Service. Terrain shifts from plains to desert to mountain crossings along the way, so motion sickness risk is not evenly spread: most of the route is easy, with the discomfort concentrated where the road climbs.
How many states does Route 66 cross?
Eight, from Illinois to California, per the National Park Service. The flattest driving comes early through the plains states, and the twistier sections wait in New Mexico, Arizona and the final California mountains, so sensitive passengers can pace the trip around what is coming.
When was Route 66 established?
1926, which makes 2026 its centennial year. The route turned 100 with events planned along its length, and the anniversary traffic is a real planning factor for anyone driving it this year.
Will Route 66 be busier in 2026?
Expect it to be: 2026 is the official centennial, with commemorations planned along the route. Busier stops mean more queueing and slower small town traffic, so book ahead and build slack into each day rather than driving longer to make up time; long tired days are when car sickness shows up on an otherwise easy road.
Which stretches of Route 66 are hardest for motion sickness?
The mountain crossings. The plains and desert running is straight and easy, but the road earns its moderate rating where it climbs, in the New Mexico and Arizona high country and the final drop toward the coast. Plan those as morning segments with light stomachs and screens away.
What's the fastest way to stop car sickness mid-drive?
Once symptoms have started, pills won't work fast enough - they take 30+ minutes to kick in. The fastest options mid-drive are sound therapy via headphones (Dizzout states relief in about 90 seconds), pulling over for fresh air, and looking at the distant horizon.
Other drives we have looked at
Route facts last checked September 2026. Roads, rules and seasons change; the linked official pages are the live word.