I'd have a hard time riding across the country now just because my kid is still in school. But when he's out on his own, I'd like to do one more cross-country ride. I want to see how much has changed, but more importantly what has stayed the same.
Then you schedule the event to coincide with holidays. In the US, we have (depending on your employer) 3 federal holidays from May through July (Memorial, Juneteenth, 4th of July). 4 for September through November but it doesn't line up well enough to get all 4 starting with 11 weeks off (Labor Day, Columbus, Veteran's, Thanksgiving). If you're willing to travel to get a better climate for an event, you have November-January which gives you Veteran's Day, Thanksgiving, Christmas, New Year's, and MLK.
So 3, 4, or 5 extra days on top of leave are feasible several times of the year (late spring/summer, fall, winter). That can be used to stretch your leave if you don't have enough to make it, or to give you a recovery week (or partial week).
Or, you get enough money and have no responsibilities and just quit working for 2-3 months.
I would bet you have more leave than 95%+ of W-2 workers in the US.
EDIT:
But if I'm understanding the table you linked, for people with between 10 and 20 years of experience, 19% have > 24 days off and 43% have > 20 days off. So my base leave is above average but not extraordinary. The rollover may be, though.
It would also be exceptional if you were approved to take all that leave at once.
I started out on a two day ride on a rail trail. The following fall then went on a 6 day rail trail ride.