Trek Farley 9.6. Sunny, warmer and muggy, very little wind. Unusual day, high humidity very early made it a sweaty ride and I went through 2-1/2 liters of water. Nobody at the trailhead when I got there before 8 am, at mid-ride to check air pressure and at the finish. I didn't see any other riders out today, only a few walkers. Also, no deer, just tons of squirrels and chipmunks. One of my longer rides, over 22 miles and close to 3 hours ride time. I did 4 loops of Big Wheel and 2 complete alternating loops of the North trails, which slowed my pace due to all the extra climbing. I've noted that each loop of the Big Wheel and the upper trails costs about .2 mph average loss in time. Also rode out and back on the Marsh and Prairie trails plus 3 trips around the Founders Loop. Lunch and rehydration at the Hairy Cow Brewery in Byron.