I have hiked portions of the CT and will concur that resupply is difficult. There are no facilities close to anywhere - other than maybe Copper Mountain Resort - and getting to Salida from the trail is a very long hike out and back and can be quite a bear - no bears were seen however. :-) The true downside of doing the CT from Denver to Durango or vice-versa is the lack of reasonable transport back to either of those locations after a through-hike.