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

[epzik8]

I-76 east at 364 miles (rounded up).

[thspfc]

I-80

[tigerwings]

Home state of Michigan (left in 2006 after 40+ years). Also lived in Colorado, California, and Ohio.

I-80 from San Francisco to I-77 interchange south of Cleveland, 2463 miles.

[dfilpus]

I-90 (2423 miles)
US-30 (819 miles)

[formulanone]

Have never lived in any of the states it crosses
I-90: 863 miles (not clinched)
I-79: 340 miles (clinched)
US 6: 840 miles (not clinched)
US 6N: 28 miles (clinched)
GA 520: 213 miles (not clinched)
TX 130: 140 miles (clinched)

Within states resided without driving ability
I-40: 1210 miles (not clinched)
I-55: 960 miles (clinched)
US 40: 910 miles (not clinched)
US 641: 166 miles (clinched)

[US 89]

Easily I-40 for me. I have six separate segments of it, including the whole thing from Amarillo to west Nashville, that add up to 1472 miles per Travel Mapping (about 57% of the route).

For US highways, it's US 30 (742 miles, 24%) thanks to its long concurrencies with I-84 in Oregon/Idaho and I-80 in Wyoming.

[1995hoo]

As far as I know, I-75 (1114 miles), although I haven't added up all the different segments of the Trans-Canada Highway, so if you count that as a single highway it might be more.

[Mapmikey]

My top 3 longest clinches are all outside my home states of SC and VA:

I-40, I-80, I-90

Longest US route that meets this condition is #7 on my list, US 40.

[iowahighways]

I-55 for me. During my lifetime, I've been on all but the part south of I-12 in Louisiana.

And although I've clinched all of the Interstates within Iowa, all of the 2di's I've clinched to date don't go through there at all: I-4, I-22, I-24, the western I-76, and the western I-88.

[hbelkins]

Strictly a guess on my part, but I've done all of I-70 between where US 6 and US 191 join the route in Utah to just outside Baltimore.

The only possible rival would be I-40, which I have in its entirety between Wilmington, NC and the US 59 exit near Sallisaw, OK; along with pieces/parts east of OKC, Gallup to Flagstaff (excluding the Petrified Forest loop) and Williams to Kingman.

[ilpt4u]

If I can count the Eastern and Western I-76 as one mileage bank, I-76 is my hands-down winner. I am just shy of clinching the Western branch/pretty sure got as far west as I-25 in Denver from I-80, and the Eastern branch I'm missing east of Breezewood but have Westfield-Breezewood clinched

Other contender: I-85 between Charlotte and the I-185 exit towards Columbus, minus some mileage in Atlanta. I've been on the Central Artery, but not the 85 on the NE side nor between the airport and artery

Another: I-69. Everything south of the Toll Road in Indiana, except I haven't traveled on the Martinsville segment since it has earned the I-69 designation. Everything in Kentucky between Henderson and Calvert City. "Future"  segments in Tennessee that have already been upgraded but are still signed US 51. All the tiny bit designated in Mississippi. I don't remember if I ever got on 69 in Houston, but if so only 10-20 miles or so, and quite possibly zero. If I did, it was going for a joy ride around town

As a passenger: I-75, between I-70 and Florida's Turnpike, minus Macon, GA

[fwydriver405]

A few contenders from my home state of Maine would be:

I-5 (Lathrop CA - Garden Grove CA) - 484.88 km - 21.57% Clinched
I-93 (Canton MA - Waterford VT) 305.7 km - Fully Clinched
I-89 (Concord NH - Burlington VT) 239.05 km - 78.09 % Clinched
I-78 (Union Twp PA - Manhattan (New York) NY) 236.44 km - Fully Clinched

For US routes I would have to say US 3 (154.93 km - NH/MA), 6 (164.85 km - MA/RI/CT), 22 (112.06 km - PA/NJ) and 101 (712.97 km - Los Angeles CA up to around Sausalito CA). Can't really think about longest state highways I've clinched that don't enter Maine (too many to choose from!).

[DJDBVT]

I-95, US 202

[JayhawkCO]

Interstate: I-80 - 2,705 miles (Beats my mileage on I-90 by 3 miles)
U.S. Highway: US30 - 1,384 miles
State/Provincial Route: SK16 - 435 miles

(All mileage according to Travel Mapping)

And none of these enter any state where I have lived (Minnesota, Colorado, Florida, Kansas, or Washington).

[Hot Rod Hootenanny]

I-40 for interstate (since it never enters Ohio, nor Louisiana)
For US route, US 60 (since it never gets north of the Ohio River). If I discount the 5 years I lived in Louisiana, then US 61 takes the lead in this category.
International - Quebec 132

[hobsini2]

Homestates: IL & WI

The contenders I believe are I-35, I-40, I-65, I-75 and I-95. I will check the mileage later.

[hobsini2]

I-40 for interstate (since it never enters Ohio, nor Louisiana)
For US route, US 60 (since it never gets north of the Ohio River). If I discount the 5 years I lived in Louisiana, then US 61 takes the lead in this category.
International - Quebec 132

US 60 (along with US 62) DOES cross both the Mississippi and Ohio Rivers at Cairo, IL. It is for less than a mile in Illinois but just saying.

[webny99]

My most-traveled routes mileage-wise that do not enter NY are I-94 (577.4 miles) followed by I-75 (513.0 miles). For US routes, it's US 52 (325.9 miles). Mileage figures are per TM.

[DandyDan]

I have lived in 4 states, Minnesota,  Illinois, Nebraska and Iowa. I believe the interstate I have traveled on the most that is completely outside those states is I-10, but if there is a mandate that I drove it,  it's I-65. For US Routes, I believe it is US 180, but if the same rule applies, it's probably US 56.

[mgk920]

I have been on all of I-80 east of I-76 (Nebraska) except the part between I-29 and I-380 in Iowa.

Mike.

[bwana39]

For me it is either I-65 or I-80. I would have to sit down with an abacus to figure out for sure which,,,

For a US-HWY it has to be US-169 or MAYBE US-191.

[zachary_amaryllis]

I-64, goes nowhere near colorado, but I've been on all of it except the extended part into MO.

[ftballfan]

I-65 easily. I've lived in Michigan my entire life and I've been on all of I-65 north of I-840 south of Nashville

[roadman65]

I-65 for sure. US 84 another as well as US 71.

[bulldog1979]

I-95 after a roadtrip this winter to Florida that took us down the East Coast. Before that, the answer would have been I-90.