Portland, its PUMP (Portland United Mountain Peddlers) I've known lots of great folks that ride together under that banner
jeah, PUMP is a cool group and i did a fair amount of rides and stuf with them - is Jerry still active in leading rides?
another "loose" group is the Fat Tire Farm rides - (my info is from 2000 so may have changed) - there were a few different rides: Thursday night is the "fast" ride. they meet at Fat Tire Farm (at NW 26th and Thurmon) and leave at 6:30pm and ride Forest Park for about 3 hours. back in 1999/2000 it was mostly XC sport and expert class riders - usually between 20 and 40 in the summer and then 10-20 thru say November... not sure if it still goes on b/c Dereck, one of the main organizers moved to China last year...