I had a really tough run today. I ran my intended distance of 10K, but was really struggling towards the end. It was the worst I’ve felt at the end of a run since November, when I was sick. I hope I’m not getting sick again, but my gut tells me that wasn’t the issue. I rolled out of bed at 6:30, and instead of my usual breakfast of egg bake, I started off with coffee and waited until around 8:00 to drink a protein shake. I started my run at 9:40, and ran until 11:00. It could be that I was dehydrated, could be I was low on electrolytes, or it could have been something else entirely. I don’t know. One thing of note was that instead of my usual Vibram V-Runs or Xero Terraflex shoes, I ran in Altra Escalantes. I’ve been battling some sensitivity in the outer area of my left heel that I suspect may be bursitis, and cushioning the area relieves the symptoms. The Altras have a lot of cushioning compared to my usual running shoes, and they’re very comfortable around-the-house shoes, but I didn’t really like running in them. Coming from ultra-minimalist shoes, I had a hard time getting used to all of the Altras’ extra cushioning in the forefoot area. It seemed like the cushioning was absorbing kinetic energy, to the point where I was struggling to maintain a fast cadence. The best analogy I can think of is that compared to my V-Runs, it felt like I was running through sand. After a while, I also felt like I was starting to let the shoes absorb impact instead of my leg and core muscles, and I could feel it in my knees after I finished. All of that said, this isn’t really a fair assessment, as I clearly was not 100% physically. The run might have gone much better if I had been. So, I really can’t write off the Altras as an option just yet. I’ll probably give them another chance at some point, but where the bursitis issue is concerned, I’m not sure they’re going to be an improvement over using minimalist shoes with heel cups. If anything, I may try adding metatarsal pads, as I’ve noticed that they seem to help a little bit more than just the heel cups alone.