Today's weather was less cold. In the upper 50's. I wore the standard winter kit + Skull Cap. Legs felt good from the start. Made it to the top of the descent in good time. The wind conditions were unusual. I had a tailwind on the way up and about a mile or two down the canyon, the wind turned 180. To my liking! I made it to the base and turned around. No stoppages. The climbing legs didn't take much to get going. Before I knew it, I was passed the gauntlet. Then made my way through the Loop Monument. I was keeping the tempo steady. No less than moderate. Out of the saddle frequently. I switched the view on my GPS so that I couldn't see the elapsed time. I was working off of HR, Wattage, speed, and cadence. Concentration felt good. Drifting once in a while, but able to reel it in. Balance and form felt good. Ailments, maybe some mild soreness in the lower back. Nothing detracting. Gear is working well. I installed new battery in the HR strap and it worked like a charm. I think I found the cause of the rattling noises. I believe it was the rear speed sensor. I think I have to replace the band that holds it in place. It felt a bit loose. Other notes, no other cyclists. There were two trains on the loop (simultaneously). I was going to take a photo as I was descending, but was reluctant. Kind of wish I did...