We were in Williamsburg, a few blocks from the Queens border.
My street is about 4 miles long, so I could walk the whole length of it, though I would prefer not to.
There’s a hack for that. Drive your car down to the end of the street and walk home. Then, walk the length of your street and drive back! 
The streets are short around my end of town. I just checked a map, my street is 6 blocks long.
My town is checkered with industrial areas. There’s a smaller industrial park one street below mine that cuts off a few streets. I have to walk around the industrial park to get to the lower end of my street.
My street is about 7 blocks long, maybe a half mile, and I’ve walked it often. When we had our dog and she was still young we walked every block in our development and its neighbors. My block was a fairly trivial part of that. Not all at one time, but we did walks much longer than one end of my street to the other.
My street is a cul-de-sac that goes nowhere. Anyway, end-to-end, it takes fifteen to twenty minutes to walk. No problem, and a nice bit of exercise.
Technically, I could, but I would be putting myself at significant risk to walk the whole length. My road has no pavements (sidewalks) for most of its length - it’s a typical winding country road in Dorset (UK) - mostly 60mph speed limit and in many places bordered by steep banks and/or high hedges on both sides, so even wearing hi-vis and taking all possible precautions, there’s still a chance of a car coming around a bend and hitting me (and crossing to proceed on the more-visible side is a risky thing in itself).
I live in a “close” (ie, cul-de-sac) which is about 80 meters long.
I live right on the corner at the open end and have no reason to
ever go to the other end. I’ve been here 17 years, and I may have walked
along it once but I don’t remember.
There is a footpath at the end which goes through to another road,
but it’s easier for me to go round the block the other way.
Surely I can walk the 300 ft that is the length of my present street.
Good thing you didn’t ask about walking the street that you lived on as a kid. Mine was Baseline Road, which was built on the east/west survey lines established when mapping the western United States. They literally could run for many miles, although not always. Mine ran about 30 miles straight east west.
At a previous home, I lived on Easy St. No fooling. And it was easy, about 300 feet. You can find it in McAlester, OK if interested. After they ran out of presidents, trees, tribes; some sections got Monopoly names, horse race tracks and other themed names.
Technically, I live just off a main road that stretches around 100km.
I could walk that, it would only take about 4 to 5 days, though finding campsites might be challenging.
The road I actually live on is about 100m long, so not too hard to walk, unless I am VERY drunk. Even then.. I make it home.
I live on the short piece of a street that was broken to prevent through traffic – round trip from one end to the other and back is just over one kilometer.
Go through the gap and continue on to where the road appears to end at a T-intersection, and the round trip becomes around 1.8 km.
But that isn’t really the end, because if you turn left at the T you’re still on the same road, which continues on for a few miles before it crosses the line into the next town and changes its name.
My street makes a 90° bend about half a block to the west and becomes another street, and ends in a T at the county road about four blocks to the east. So yes I can (and frequently do) walk the entire length of my street.
I probably could but these days my gait is closer to a hobble and I only walk when necessary.
Also the Rite Aid 3 blocks away has closed and there is nothing to walk towards anymore.
I routinely walk to the other end of the road where it begins, I live at the end or dead end. Today I’m postponing my walk, it’s super foggy, super thick, super creepy and there are speeding fools who live in this neighborhood who might veer all over the road in this fog.
Or, in a fog like that, you might wander into a different universe.
Of course, it might be an improvement.
The fog has lifted, it has descended on me because now I have the don’t wannas But will get dressed put on shoes and headphones and drag myself out to the road. Damn dogs better be behind their fences.
I posted upthread that my street is only five blocks long, and that’s true, but I live on a corner. The five-block-long street is the one that my house faces, and is my street address; the other street is one of Chicago’s “numbered” east-west streets.
It’s not a continuous street (though keeping its same name in Chicago, and in the suburbs); the segment that runs past the side of my house is about nine miles long: walkable, but it’d be a long walk. The remaining segments are mostly in the city, broken up by railyards and such, but are probably another seven miles or so in total.
I live on a little loop that I can generally walk in about 20 minutes. When I first moved here, I took walks pretty regularly, frequently doing multiple loops at a time, but I have gotten kind of lazy in recent years. The grade of the terrain is a little off-putting, to be honest. I would probably be a lot more eager to get out there and get some steps in if it were even just a little bit more level.