Wow! WB rocks. I'm planning a SOBO hike starting in mid June and have a footwear question. I recently purchased a pair of Trail Runners as my footwear (Salomon XA Pro 3D Ultra GTX). They seem to be very comfortable and I plan on breaking them in a bit before I head for Baxter. My question is regarding the durability of trail runners in general. I know many may prefer a certain brand / model combination but I'm more curious as to if others plan on replacing them due to wear along the trail and at what interval. I didn't know if I should plan on replacing them 2 or 3 times, or what? If I really learn to love these specifically what should I expect in regards to availability from outfitters along the way? Limited selection? Are boots just much more durable? How many times did others replace footwear along the way?