What an informative thread.

Here in Oregon we have the Cycle Oregon week long ride, which this year will cover 450 miles in seven days.

http://www.cycleoregon.com/

I think they call these assisted rides, in which the organizers carry your camping gear and feed you.

Last year they had 2000 riders, and this year the same at $850 each.

They've already sold out on this September's ride.

I'd like to try this on a fixed gear bike.

I noticed the OP's gearing of 73+ gear inches.

I consider 72 gear inches the highest at which I can brake with only my legs.

I presently ride at 61 gear inches, and I would choose that for a 450 mile ride in the mountains.

Over the past year I have really focused on learning how to brake with my legs going downhill, and I find it involves technique much more than it does strength or stamina.

Anyway, thanks for the great thread.