If someone said they's give you $1,000.00 for every hour you rode without a seat. If you made it past 8 hours you automatically get a seat for the next 2 hours but, without handlebars. Then you receive $10,000.00 per hour then on while back to riding with bars but, without seat.
I think I could go about 1 hour.
No idea, but I did cycle home without one when someone had stolen the seat off my bike :/ That was only about 45 mins riding tho' ...
If you're not worried about speed it's not that hard to keep going for a long time - pedal for a bit then just stand up on the pedals to rest. No harder than walking.
If you left the seat post, I'd be finished after about 12 minutes.
Probably a few hours. When I mountain bike I almost never sit down, as I'm always up on the pedals waiting to maneuver over the next obstacle. After a few hrs my legs would be shot to hell.
Ew.