Thanks 2 all. It was a trip. I didn't really know exactly how to pace myself for 3 loops so I did 2 @ 30 minutes and the last one was about 26'ish.

On the last downhill, I was coming up behind my friend getting ready to lap him b/c he was doing beginners class. I was probably going 10-15 mph faster than him. He was on the left and I was going to pass him on the right. I yelled out "hey man" but he didn't quite hear me or something and he jumped into the middle of the singletrack right as I was up on him. I either clipped him or just shifted my weight to miss him and ended up cartwheeling down the trail. He stayed on his wheels. ( I don't think I hit him) All he said was "Are you alright man? Are you alright?" followed by "Wow I wish I had a helmet cam for that crash, hehe!"

I rocketed back up on my bike and got within about 300 feet of the finish line and my front tire went flat. I think I bonked it on a rock or something when I crashed. I finished the last 150 feet or so riding on a completely flat tire, bleeding like a stuck pig.

It was so much fun though. I can't wait to do it again.