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

[NWI_Irish96]

I-40 is my 4th most traveled route overall, but 1st among routes that don't enter Indiana at 1694 miles.

For US highways, it's US 85 at 458 miles.

[cl94]

Unless you want to count every state I have ever lived in as a "home state", my winner would be I-70, which I have clinched. Does not enter my home state or my state of birth.

[Max Rockatansky]

Depends on what you mean by "home state."   If you mean the place I was born and mostly grew up then it would be I-10 which isn't anywhere close to Michigan.  If you mean where I live now then I-75 given it is nowhere near California.  I would say I-95 but that has been retroactively un-clinched given the gap was resolved. 

[CtrlAltDel]

I-40 is my 4th most traveled route overall, but 1st among routes that don't enter Indiana at 1694 miles.

For US highways, it's US 85 at 458 miles.

I-40 is the winner here for me as well.

[NWI_Irish96]

Depends on what you mean by "home state."   If you mean the place I was born and mostly grew up then it would be I-10 which isn't anywhere close to Michigan.  If you mean where I live now then I-75 given it is nowhere near California.  I would say I-95 but that has been retroactively un-clinched given the gap was resolved. 

I guess by home state I mean any state you lived in for a significant amount of time since being old enough to drive. I'll leave it to each individual to determine what "significant" is.

[Big John]

I-65

[TheHighwayMan3561]

I-80

[Max Rockatansky]

Depends on what you mean by "home state."   If you mean the place I was born and mostly grew up then it would be I-10 which isn't anywhere close to Michigan.  If you mean where I live now then I-75 given it is nowhere near California.  I would say I-95 but that has been retroactively un-clinched given the gap was resolved. 

I guess by home state I mean any state you lived in for a significant amount of time since being old enough to drive. I'll leave it to each individual to determine what "significant" is.

By that definition it would be Arizona given 13 years of my adult life were spent there.  That would get pretty interesting if I couldn't factor some pre-license clinch mileage I had as a passenger for I-75 and I-95.  Factoring all that my overall answer would be US 101 given it doesn't enter Arizona and I clinched it post licensing age.  CA 1 would be the clear winner out of the State Routes and I-20 would be for the Interstates. 

[oscar]

Not just "home state" but "home country" -- the main Trans-Canada Highway route, 3878 miles clinched, plus a short ~3 mile gap in Quebec created by the project in progress to complete Autoroute 85.

[LilianaUwU]

I clinched the entirety of TCH 2 in New Brunswick at 515 km (320 miles). This is actually my longest clinch, period. While the Trans-Canada Highway does enter Québec, NB 2 doesn't.

[SkyPesos]

For me, it's I-55, with 465 miles:
- I-240 to I-57 (145 miles)
- US 67 to I-255/270 (22 miles)
- I-44 to US 41 (298 miles)

Might be cheating here a bit, as I used to live in the St Louis area, a city on I-55's route. But based on my current home state, it's the case for me.

[M3100]

Home state California

Clinched Highway with most mileage that does not enter the state: Alaska I-A3, 146.77 miles.
Most miles on a highway that is not in the state: 1171 miles of I-90.

[MATraveler128]

For me, it's I-78 and I-87 when I visit Pennsylvania.

[Rothman]

I-70.  Clinched the whole thing.

[jp the roadgeek]

Overall: I-90 from US 219 in the Buffalo area to I-93 in Boston (only drove from I-88 east to I-93).

Driving:

Almost a dead heat between I-90 and I-87* at around 180 miles. My I-87 includes I-278 to I-84, then NY 28 to Northway Exit 22 (passenger to the Canadian border.

I use an asterisk here because at one time, I-87 did enter my home state when it was routed on what is now I-684.

[SEWIGuy]

I have lived all but two years of my life in Wisconsin - those two were spent in Indiana.  My guesses...

If you include Indiana as a "home state"...

I-75, US-101


If you do not include Indiana...

I-65, US-20

[7/8]

For me it would be I-90 at 2450/5007 km travelled (49%).

[akotchi]

I have lived in Pennsylvania and Maryland, and I work in New Jersey, so I would exclude that state as well.

I-40 is my winner, by far, as I have clinched every mile east of the I-30/I-40 interchange outside of Little Rock.

[dlsterner]

Most traveled which misses Maryland - I-75

Honorable mention - Just a few miles behind I-75 would be TH 1 (Iceland), most traveled which not only misses my home state, but my home country.

(Only routes I have more mileage than I-75 are I-95 and I-81, but those two - as we know - go through Maryland)

[Flint1979]

I-57. I have the entire highway clinched.

[74/171FAN]

Counting VA, PA, and NC (I had an internship with NCDOT in Summer 2013) as home states:

I:  Definitely I-10.  I have it clinched from AZ 85 west of Phoenix to I-20 in west Texas, and then from I-110 in Baton Rouge to its eastern end at I-95 in Jacksonville.
US:  US 380.  Clinched from its western end at I-25 to FM 926 (just east of TX 251).
State:  OH 18.  Clinched on the way to the Quad Cities Meet last summer.  (Thankfully it beats IL 110...)

[Hobart]

I live in the south suburbs of Chicago. I also go to college in Milwaukee, so those are my home states.

I'd say the longest is Interstate 65 from its interchange with the Indiana Toll Road to its interchange with Alabama 113 in the south end of the state is the road (about 820 miles).

The longest state highway is the entire length of M-28 (290 miles) in Michigan's upper peninsula.

Honestly, most of the US highways I've been on for any appreciable length of time end up in Illinois, so I don't remember well enough to get an accurate measurement.

[TheHighwayMan3561]

I-80

US: 50
State: probably M-28

[cl94]

Unless you want to count every state I have ever lived in as a "home state", my winner would be I-70, which I have clinched. Does not enter my home state or my state of birth.

To include non-Interstates...

US: US 40
State: Nebraska Route 2
Canada: ON 401
Europe: E5

[michravera]

I-40 is my 4th most traveled route overall, but 1st among routes that don't enter Indiana at 1694 miles.

For US highways, it's US 85 at 458 miles.

As a driver, my answer is likely I-35 at a paltry 43 miles. Although I have basically driven every main road on the island of Saint Martin (being in different countries, it has different names). I would have guessed US-95, but it does enter California in an area that I have never had much occasion to travel as a driver.