Briefing at 3 PM Thursday. 

 Boltz Middle School, 3243 Camelot Drive, Fort Collins; back/northeast parking lot. 

 Advanced- or Intermediate-paced 18.0-miler with 515-vertical-feet.
 A southerly (S) and clockwise (cw) loop: Camelot Drive; Swallow Road; ... Centennial Road east to Power Trail path; ... Power Trail path south to Trilby Road north-side path; Lemay Avenue; Fossil Creek Trail path through Fossil Creek Park, new tunnel, Cathy Fromme Prairie Natural Area; ... Spring Canyon Park via Spring Creek Trail path; ... Swallow Road; Camelot Drive; ... back to B.M.S.

 Map:  https://ridewithgps.com/routes/26602135.

 Head- and tail-light are recommended!