I posted this in the southern california C-A-M challenge thread too. Sorry for the formatting, I don't feel like editing it.

Date of Ride: July 12, 2008
Type of Ride: Mixed (about 65 miles in a group)
Name of organized ride or route: Sisquoc Road Race "Practice" (with transit)
Actual Mileage: 124.89
Ride Time: 7:00:48
Total Time: 9:34:50
Avg. Speed: 17.8
Altitude Climbed: 9,572 (Edge 305, reported by MotionBased)
Weather conditions: started foggy by my house, but once I climbed over the mountains it was warmer in the inland valley, and got very hot (near 100) by the end. Calm in the morning, windy (mostly head/cross) on the ride home.

Synopsis of Ride: Rode out 30 miles over San Marcos Pass to Los Olivos to meet an Echelon valley ride to preview next week's Sisquoc course. After leaving home, I decided I wanted to see the lowest effort I could do Old San Marcos in with a time under 20 minutes (8% average, 1,200 ft gain in 2.9 miles - note that many people can't even do this climb in under 20 minutes) so I hit the lower sections fairly easily. Maybe a little too easy, as I eventually realized I wouldn't make time unless I picked up the pace. I gauged the remaining effort nearly perfectly, and finished in 19:54 with an average HR of 152 and a max of 167 (my LT is 165). I wanted to average over 20mph on the rollers after descending Stagecoach, so I made sure to keep my effort at a mid-aerobic level (142 average) and hit my goal with 20.2. I had allowed myself plenty of time to get to Los Olivos, so I of course was quite a bit early. Everyone else was getting dressed & prepped, and I was already ready, so I went over to a coffee shop around the corner to get a bagel & lox sandwich.

We rode out to the course fairly uneventfully, although the pace was difficult for many of the riders, so we had to regroup many times. Once to Sisquoc, we did two laps, starting and ending at the Sisquoc store. Sprinted at the "real" s/f line both laps, but went too early the first time. The second time I stuck to Bill's wheel, and Sean jumped too early but I follwed him. He faded and I passed him. On the remainder of the lap, Bill attacked before the turn onto Orcutt-Garey, and I tried to bridge but I waited too long and let myself get swallowed back up by the group. I "attacked" on the whoop-de-doo and gave Bill another run but he was able to hold me off, and I fairly easily held off the rest of the group. We regrouped at the store and weren't sure if we were waiting for the women or not. It was not clear whether or not they were doing one lap or two. After maybe 20 minutes, we figured they had already left, so we started back at a fairly leisurely pace. Eventually there were some "attacks" but Bill and I held the pace steady and eventually reeled them back in. We regrouped at the top of Foxen and got a call from the women that they were back in Los Olivos.

Back in Los Olivos for lunch, I got a smoothie at the coffee shop from the morning, and then met everyone at Panino. We all hung out for a while, but eventually I had to leave for the ride back home. My legs took a while to get going again, and I could feel that I was a bit (ok a lot) dehydrated. The rollers were really hard on me, but the final climb was ok, despite the persistent strong headwind (it was actually somewhat of a refreshing breeze, since it was so fricken' hot). When I got home I weighed myself and had lost about 7 pounds

Edit: I knew it would be hot so I had pre-hydrated and started the day 3-4 pounds heavier than "normal"