Every four years, the Audax Club Parisien (ACP) will hold their Paris-Brest-Paris (or PBP) Randonneur event. There has been an amateur version of PBP since 1931. However, PBP has existed in some form since 1891, though back then it was a race, held about every 10 years until 1931 with a gap for the war, and then for the last time as a race in 1951. The take-away though is that PBP is no longer a race, there is no first and last place and the only metric to assess riders really is one of pass/fail. You either finish in the time limit, or you don't. Currently, PBP offers three start groups: 80 hours, 90 hours and 84 hours, in order of start. Each group will broken up into start waves with somewhere north of 200 (250?) riders in each wave. Under the direction of the ACP, Randonneurs USA (RUSA) sanctions qualifying events for PBP of 200, 300, 400 and 600km, each with a time limit. RUSA administers regions through out the US and there are five of those in Northern California, one in C