I've set my mind to prepare for this. The 3 day challenge has been tempting me for a few months now so I'm going to give it a shot.
After soliciting some advice from my neighbor, I decided to start upping the mileage a bit and start some back to back days. This will get the legs used to working while tired and will make them stronger.
Yesterday, I headed out to Deer Creek Canyon Park and did 11.2 miles in 2:09. Sounds as slow as it felt, but there was a LOT of climbing out there. Plus, my legs felt like they had cement in them from start to finish. It seemed like I had no gas in the tank and lumbered up the hills while sputtering down them. The hard part was all physical. The mental part made me glad I was pushing it and enjoying the outdoors.
That was supposed to be the good day on fresh legs. Well, semi-fresh legs anyway. I rode a little over 18 moderate to hard trail miles on Sunday, but the legs never felt depleted until yesterday. I need to do another 10-12 miles today, but I think I'll stick to some relatively flat(er) ground at Waterton Canyon or the HR trails close to home.
The knee is ok, but a little uncomfortable. That was expected so I'll continue to ice it and might even try a Naproxen or an Advil.