Longest One Can Drive & Still Not Leave The State

[GaryV]

Illinois: 8 hours or so. Near Cave-in-Rock and Elizabethtown to East Dubuque, without traveling thru Iowa

Had to force Google Maps to take an all Illinois routing

I got slightly longer times doing East Dubuque to Cairo, but it almost isn't worth mentioning.  The difference was like 5 minutes.

But for both of those, the shortest route goes through Iowa, so they are disqualified per the OP's original post and update in post 50.

[kphoger]

The route of OK-3 is basically this.

No it isn't.  According to Google Maps, at least, taking OK-3 all the way adds about 45 minutes on top of the fastest route.

What's the deviation? US-281 and spur down to Geary?

Currently, Google tells me to take US-281 south from Watonga to I-40, take that all the way to the Indian Nation Turnpike, south to the Hugo bypass, then east on US-70 to Idabel.  Of those 607 miles from state line to state line (via OK-3W), only about 321 miles (53%) of them would be on OK-3.

Using OK-3 the whole way (and 3W where there's a choice to be made), it currently estimates a 10:11 travel time.
Using Google's recommended route, it currently estimates a 9:37 travel time, 34 minutes faster.

[GaryA]

Just shy of 17 hours at 1,012 miles for California:

https://www.google.com/maps/dir/Araz+Junction,+CA/Smith+River+Agricultural+Inspection+Station,+Smith+River,+CA+95567/@37.4883997,-123.8424432,6z/data=!3m1!4b1!4m14!4m13!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m5!1m1!1s0x54d00ac96207ba3d:0x8b0adfc5205bc1c3!2m2!1d-124.2082044!2d41.9938407!3e0?hl=en

You can do a just a little better on both time and distance by having the north endpoint on US199, just before Google switches over to routing you through Oregon.

https://www.google.com/maps/dir/Araz+Junction,+CA/41.8728004,-123.8454129/@41.8412882,-123.642747,9z/data=!4m9!4m8!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m0!3e0?hl=en

Finally got around to looking at the southern end of this - you can move it straight north to Picacho and now we're up to 1043 miles -- nearly 17 and a half hours.  https://www.google.com/maps/dir/33.0239594,-114.6160144/41.8728004,-123.8454129/@37.7582995,-122.0648948,6.25z/data=!4m2!4m1!3e0?hl=en

[michravera]

Just shy of 17 hours at 1,012 miles for California:

https://www.google.com/maps/dir/Araz+Junction,+CA/Smith+River+Agricultural+Inspection+Station,+Smith+River,+CA+95567/@37.4883997,-123.8424432,6z/data=!3m1!4b1!4m14!4m13!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m5!1m1!1s0x54d00ac96207ba3d:0x8b0adfc5205bc1c3!2m2!1d-124.2082044!2d41.9938407!3e0?hl=en

The route shown routes through Oregon in violation of the OP's instructions.

You can do a just a little better on both time and distance by having the north endpoint on US199, just before Google switches over to routing you through Oregon.

https://www.google.com/maps/dir/Araz+Junction,+CA/41.8728004,-123.8454129/@41.8412882,-123.642747,9z/data=!4m9!4m8!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m0!3e0?hl=en

Finally got around to looking at the southern end of this - you can move it straight north to Picacho and now we're up to 1043 miles -- nearly 17 and a half hours.  https://www.google.com/maps/dir/33.0239594,-114.6160144/41.8728004,-123.8454129/@37.7582995,-122.0648948,6.25z/data=!4m2!4m1!3e0?hl=en

[gonealookin]

Nevada will be 705 miles in 10:25 of Google Maps time.  Start in the north where the Winnemucca to the Sea Highway, OR/NV 140, crosses into Nevada, and drive to the crossing of the Colorado River at Laughlin.  The major towns visited will be:  Winnemucca, Battle Mountain, Austin, Tonopah, Beatty, Las Vegas, Searchlight and Laughlin; we're using the NV 305/NV 376 "shortcut" from Winnemucca to Tonopah, rather than US 95.

[bassoon1986]

Louisiana's is pretty much going to include the bottom of the boot part near Venice. Best I can find are:

Tidewater Rd past the town of Venice to the LA 1 tripping at LA/TX/AR is 456 miles in 7 hours 15 minutes.

7 hours 22 minutes to McCall Rd near Bolinger.

7 hours 27 minutes to Monica Lane near Springhill.


iPhone

[Perfxion]

Orange to El, Paso, TX is 12 hours and 854 miles.
Perryton to Brownsville, TX is 12.5 hours and 830 miles.

[JayhawkCO]

Just shy of 17 hours at 1,012 miles for California:

https://www.google.com/maps/dir/Araz+Junction,+CA/Smith+River+Agricultural+Inspection+Station,+Smith+River,+CA+95567/@37.4883997,-123.8424432,6z/data=!3m1!4b1!4m14!4m13!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m5!1m1!1s0x54d00ac96207ba3d:0x8b0adfc5205bc1c3!2m2!1d-124.2082044!2d41.9938407!3e0?hl=en

You can do a just a little better on both time and distance by having the north endpoint on US199, just before Google switches over to routing you through Oregon.

https://www.google.com/maps/dir/Araz+Junction,+CA/41.8728004,-123.8454129/@41.8412882,-123.642747,9z/data=!4m9!4m8!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m0!3e0?hl=en

Finally got around to looking at the southern end of this - you can move it straight north to Picacho and now we're up to 1043 miles -- nearly 17 and a half hours.  https://www.google.com/maps/dir/33.0239594,-114.6160144/41.8728004,-123.8454129/@37.7582995,-122.0648948,6.25z/data=!4m2!4m1!3e0?hl=en

I'm showing that this takes me through Oregon also.  Fails to qualify.

Chris

[kphoger]

Some of these out-of-state routings could be the result of Google recommending an in-state route one day but an out-of-state routing the next due to traffic conditions.  Unless you pin the route to specific roads, then the link won't necessarily display the same blue line every time people click on it.

[GaryA]

Just shy of 17 hours at 1,012 miles for California:

https://www.google.com/maps/dir/Araz+Junction,+CA/Smith+River+Agricultural+Inspection+Station,+Smith+River,+CA+95567/@37.4883997,-123.8424432,6z/data=!3m1!4b1!4m14!4m13!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m5!1m1!1s0x54d00ac96207ba3d:0x8b0adfc5205bc1c3!2m2!1d-124.2082044!2d41.9938407!3e0?hl=en

You can do a just a little better on both time and distance by having the north endpoint on US199, just before Google switches over to routing you through Oregon.

https://www.google.com/maps/dir/Araz+Junction,+CA/41.8728004,-123.8454129/@41.8412882,-123.642747,9z/data=!4m9!4m8!1m5!1m1!1s0x80d6f755f28e3037:0x9bd2f64e66429cd6!2m2!1d-114.71361!2d32.74722!1m0!3e0?hl=en

Finally got around to looking at the southern end of this - you can move it straight north to Picacho and now we're up to 1043 miles -- nearly 17 and a half hours.  https://www.google.com/maps/dir/33.0239594,-114.6160144/41.8728004,-123.8454129/@37.7582995,-122.0648948,6.25z/data=!4m2!4m1!3e0?hl=en

I'm showing that this takes me through Oregon also.  Fails to qualify.

Chris

Depending on traffic levels (mostly through the SF Bay Area), the exact point along US 199 at which it will switch from using US 101 in Northern California to I-5 (and thus going thorough Oregon) will vary somewhat.  Move the starting point a little closer to Crescent City, or if you want a point that should always qualify, use Max's original idea of US 101 at the Oregon border.

Gary