Here is a picture taken by Andy Benkert who captures very well the type of weather we had this Saturday morning and the smokey views:
Strava is giving a cumulative elevation of 5,325 feet, from the Garmin activity, not sure how accurate this is.
On our way back, we had both seen Keith and Rida running together as they were starting their last loop. Andy and Stuart's cars were gone, but Pierre-Yves' one was still there so he was on his third loop too. Sounds like Dennis also completed the three loops.