Furthest you've ridden fixed is...

Well, if you're going into multiple days, I've cycled across Canada. 5000 miles, 76 days, on a bike that weighed 80lbs when loaded with all the kit.

Was it on fixed though? :D

That's a pretty damn amazing trip. I'm gonna be hitting France later this year doing about 60 miles / day, but only for 14 days (the perils of a career). At least you've got plenty of villages and boulageries every few clicks in France, in Canada I bet you wouldn't have seen anyone for days on end.