Longest you've driven without sleep breaks?

[ondma]

12-14 hours. That's at the extreme limit of what I felt comfortable doing. Haven't done that in years though.

Couple of years ago drove straight through from Ohio to Minnesota, 800+ plus miles in one day, a lot of it in heavy rain. Think it took about 14 or 15 hours.
Surprisingly, I was not that tired at the end, but was getting drowsy/losing attention. Had a new car with adaptive cruise, which was a godsend.
I have also made the trip a couple of times in one day without cruise, but I was a lot younger then. That was a killer; dont think I would be up to it now.

 

[KK]

Most we've done was New Castle, PA up to Niagara Falls and then Niagara falls back to GA. We were thinking of just heading up to Niagara Falls from New Castle for a day trip, but by the time we got back to New Castle, we saw the forecast and it was calling for some decent snow fall. We decided to head back to GA to try to beat the storm, but I think we caught it down in WV. Guessing the total was around 1100 miles.

 

[Denly]

Solo from Toronto ON to Fredericton NB 1300-1400km from 6am arrive before 8pm, longest stop was lunch with a frd in Montreal. Might be able to to hit Moncton - another 200km - if it wasn't for the long lunch stop.

On my way back from Halifax to Ottawa I covered almost 1500km.

 

[bigboxes]

I was on leave from boot camp. I rented a car and drove from Dallas to the Adirondacks in Upstate New York. 34 hours and 2200 miles. I was having trouble near the end.

 

[Danny123434]

I just finished a drive from scottsdale to chicago in 24hrs 1800 miles straight. I left Scottsdale around 11am chicago time tuesday 10/6/2020, 9am scottsdale time, and got onto LSD and I55 at 11am, 10:50 am 10/7/2020. No breaks except for gas and a cigarette and pee break each time. No sleeping. I held an open bottle of water in my hand to keep myself awake.
It was super crazy and I was going cruise control between 85–95 for around 18–20hrs of it. It slowed down when I got near St. Louise and again into illinois close to Chicago.
Not safe! Crazy time, worth the trip for the story but never again. On the way there I slept for 3 hours between 430am and 730am and it made all the difference.
I had a 2013 Honda Civic 104k miles when I started.
I had a caffeine pill 200mg 9am chicago time tuesday when I left.