I was riding my 5 year old Trek 528 Mtn bike. I had made the panniers from old buckets. The front ones were mayonaise pails I had made in 2012 while working at the Zion Lodge in SW Utah and the rear ones were kitty litter pails with hinged lids. They were light, and made good seats and tables as well in camp.
Took me just over 2 weeks to complete the ride.