Can you give more details on start location, route? I might be able to do it on Fridays. I usually have zone2 or zone1 with few short intervals (if it's race weekend) 2 hour ride on Fridays. I usually ride near that Nasa Air port. It's kind of boring, but I don't have to deal with red lights (can just turn right and circle the block when I come to one). Might not be your "cup of tea" thought. My ride "starts" near the Intel on Mission college Blvd.