Solstice Century
Solstice Century is a century-distance ride in Oswego, IL, US, scheduled for June 18, 2027, covering roughly 100 miles.
About riding in Illinois
Illinois is mostly flat to gently rolling, with the hillier terrain in the north-west and far south. Wind across open farmland is often the main challenge. Late spring through early fall is the best window, with cold winters and humid summers.
Estimated finish times
The route is about 100 miles. Here is the moving time at a steady average speed. It is a flat-ground baseline: climbing, wind, stops at aid stations and group riding all move the real number, so treat it as a starting range.
| Average speed | Moving time |
|---|---|
| 10 mph | 10h 00m |
| 12 mph | 8h 20m |
| 14 mph | 7h 09m |
| 16 mph | 6h 15m |
| 18 mph | 5h 33m |
Most recreational riders average 12–16 mph on rolling terrain in a group, and less on hilly routes.
Plan your ride
Paste the event's RideWithGPS route into the planner (many organizers publish one) to see your projected finish time, the headwind or tailwind you'll face, the temperature range, and how much to eat and drink. The ride date is pre-filled.
Open the Ride Planner · Gran fondo vs. sportive vs. century
Other events nearby
- Le Tour de Shore — June 18–19, 2027, Chicago, IL, US (36 mi away)
- Apple Cider Century — September 26, 2027, Three Oaks Michigan, US (86 mi away)
- 21st Fat and Skinny Tire Fest Countryside Tour and Century — May 21, 2027, Winona Lake, IN, US (130 mi away)
- Holland 100 — July 17, 2027, Holland Michigan, US (134 mi away)
Listing sourced from granfondoguide; last verified 2026-10-12. Dates and details can change, so confirm with the organizer before you register or travel.