The  Summer Century

 Briefing at 8:00 AM, Saturday.

 Front Range Community College/Harmony Library, southwestern area of parking lot, 4700 S. Shields Street, 80526.

 Description: A southerly and clockwise (S & CW) loop on flat-to-rolling terrain in parts of southeastern Larimer, southwestern Weld, and northeastern Boulder, counties.

 A-paced Imperial Century/~100-miler with 3450-vertical-feet: … eastern Loveland; ... Berthoud; ... southern Longmont; 95th Street; Niwot Road; Neva Road; north on Foothills Highway [Colorado 7/U.S.36]; Nelson Road; 75th Street; "The Mountain Fountain," Hygiene; ... "Sedona Hills" subdivision area; LCR-29; U.S.34, eastbound; western Loveland; ... Fort Collins.

A Route Map: https://ridewithgps.com/routes/35079678; or,

 B-paced Metric Century/~100-kilometers/63-miler with ~1900-vertical-feet: … eastern Loveland; ... Berthoud; ... "The Mountain Fountain," Hygiene; ... LCR-21; western Loveland; ... Fort Collins.

B Route Map: https://ridewithgps.com/routes/36492159; or,

 C-paced (truncated version of the other routes), 35-miler... 

C Route Map: https://ridewithgps.com/routes/36483103.