Highway NOT entering your home state on which you have clinched the most mileage

[Buster Cannon]

My home state is Maryland; the highway I've driven the most miles outside of that is I-76. I've driven the entire length of the PA turnpike and gone further westward to Canton, OH.

[drebbin37]

Interstate: I-90 @ 2963 miles (all but 70 mi. in WA & 80 mi. in IL)
US Highway: US 50 @ 1603 miles (28 separate segments)
State Hwy.: ME 11 @ 397 miles (full clinch)
Provincial: ON 17 @ 425 miles (Thunder Bay to Sault Ste. Marie)

[Henry]

Disregarding the ones entering the three states I've called home (IL, CA and WA), I-20 would be the winner for E-W, and I-95 for N-S.

[CoreySamson]

I've lived in OK, TX, and LA (for some of my childhood). I consider OK and TX to be my "home states" right now, as I am still in college. With that in mind, here are my top highways:

Interstate: by my definition of home state, it would be I-55 at 369 miles (everything between I-12 and I-555), but if we're being technical, my answer that does not enter either TX, OK, or LA is I-75 at 197 miles. I got much of that I-55 mileage when my family lived in LA.

US Route: US 98 at 396 miles (mostly everything between Pensacola and Homosassa).

State Route: by my definition, LA 28 at 88 miles (also further legitimized by the fact that when I clinched all this mileage, I had not lived in LA for over 10 years), but if being technical again, the answer become FL 589 at 53 miles.

[JayhawkCO]

Looks likes others were doing some different categories. Let me expound on my answers:

Most interstate mileage for a highway that doesn't enter Colorado: I-90 - 2,764 miles
Most interstate mileage for a highway that doesn't enter a state I've ever lived in: I-80 - 2,705 miles
Longest clinched interstate that doesn't enter Colorado: I-95 - 1,916 miles
Longest clinched interstate that doesn't enter a state I've ever lived in: I-55 - 960 miles

Most US Route mileage for a highway that doesn't enter Colorado: US30 - 1,595 miles
Most US Route mileage for a highway that doesn't enter a state I've ever lived in: US30 - 1,595 miles
Longest clinched US Route that doesn't enter Colorado: US73 - 114.18 miles
Longest clinched US Route that doesn't enter a state I've ever lived in: US199 - 76.29 miles

Most provincial route mileage (and also longest clinched): SK16 - 435 miles
Most state route mileage for a highway that doesn't enter a state I've ever lived in (and also longest clinched): IL110 - 329 miles

Most mileage on a route outside of US/Canada: Iceland Highway 1 (Ring Road) - 334 miles
Longest clinched route outside of US/Canada: Iceland Highway 60 - 185 miles

[webny99]

Keeping it to the basics for now...

Interstate: I-94 (608.95 miles traveled, #4 overall)
   Runner-up: I-75 (544.09 miles traveled, #5 overall)
   Clinched Interstate: I-37 (145.63 miles)

US Route: US 52 (336.20 miles traveled, #1 overall)
   Clinched US Route: None, but now I have an incentive to clinch US 113 (I'm missing just 2.5 of 75.3 miles)

State Route: M 28 (212.74 miles traveled)
Provincial Route: ON 401 (381.13 miles / 613.37 km traveled)

[ran4sh]

I-40

if North Carolina counts as one of my home states, then I-10

[WNYroadgeek]

I do believe the winner for me is I-79 from I-90 in Erie to US 19 in Sutton, 280 miles (or 82% of the route).

[Konza]

Counting college and military service, I've now lived in nine states, six of them since I obtained my drivers' license.  Those six include all of the major coast-to-coast east-west Interstates and a couple more long Interstate and US routes.

The highway on which I've clinched the most mileage that does not enter any of those states is Interstate 5.  Interstate 75 is longer, and also does not enter any of those states, but I'm over 600 miles short of clinching it.  Third on the list would be Interstate 25; my mileage on I-75 exceeds the total mileage of I-25.

[JKRhodes]

In overall mileage I've clinched several Sections of I-70: Breezewood, PA to St. Louis, MO; Wheeler Jct to Denver, CO; I-15 to Salina, UT; US 191 near Green River, UT to Grand Junction, CO.

Runners up: I-20 from its western terminus to Dallas.

I-44 from St. Louis to Carthage, MO; OKC to Wichita Falls, TX

US 287 from Amarillo to Wichita Falls

US 75 from Dallas, TX to Atoka, OK

[TheHighwayMan3561]

Interstate: 80 (clinched, previously mentioned)
US: 50 (860 out of 3066)
State: WIS 35 (330 out of 415) - longest clinched non-MN state highway is M-28