I responded in the other thread. That pic is right across from the Honda Center near Anaheim Stadium. But runs from Greenriver and the 91 fwy to Huntington Beach. 60 roundtrip, we start at Imperial and the 91 fwy,42 roundtrip.
I have a friend that lives near the trail in SA (Santa Ana River Trail, SART for short) He used to do some night rides with a group, not sure what club or group it was.
Not sure anymore but Incyclce did a ride near the 15 and Baseline. Crit training rides. Used to be broken into 2 or 3 groups. Might be Tuesday nites. Contact the store or site for info.