Ride Calendar
Norm Carr, RBA of Desert River Randonneurs, maintains a comprehensive randonneuring calendar for the Pacific Northwest. Easy perma-link: https://goo.gl/bQHlL.
Ride Planning: Routes
Ride With GPS (RWGPS) is widely used in the North American randonneuring community for planning and sharing routes, even among people who use other applications like Strava for recording and sharing records of their rides. There is a Willamette Randonneurs Group in RWGPS, and we are beginning to populate it with brevet and populaire routes.
Ride Planning: Weather
What to wear? What to carry? Epic Ride Weather is an application for plotting weather along your planned route, at your planned pace. Works with Ride With GPS.
Dark Sky is another good source of weather information by location and time.
Other resources
What else would you like to know or contribute? Please send suggestions to the RBA / webmaster.