Rider check-in

See the official check-in times for St Mary's on our century home page. For check-in times at Island, see our alternative car-free start page. We urge slower riders to get an early start.

Post-ride Meal

Hot food is available at the finish (St Mary's) from noon until 6:00 pm.

Rest Stop Opening and Closing Times

Rest Stop	Opening Time	Closing Time
Ivy Park (100 mi, 100K Gravel)	8:15 am	10:30 am
Island Picnic Area (All Routes except 35 mi)	8:30 am	12:15 pm
Port Costa (75 mi and 100 mi)	9:45 am	2:30 pm
Briones (All Routes except Gravel)	10:45 am	4:00 pm

SAG support on each course segment ends correspondingly.

35 and 50 Milers, Don't Start Too Early

For our 35 and 50 mile routes, please do not start too early. If you are riding the 35 mile route, try not to start before 9:30 am. For 50 milers, try not to start before 8:00 am. If you start too early, or hammer around the route, you might arrive at our Briones rest stop before it opens at 10:45 am, or at lunch before it opens at noon. Slow down, be safe, and enjoy the ride!

100 Milers, Start Early

Start early and keep moving if you want to complete the entire 100 mile route before the 6:00 pm food cutoff. A rider who checks in at 6:30 and averages 11 mph rolling speed between rest stops (which is midpoint of GPC's T pace) and spends 15 minutes at check-in and each rest stop should finish around 5:00 pm.

Time Cut

75 mi and 100 mi Riders who arrive at the intersection of Castro Ranch Road and Alhambra Valley Road after 1:00pm should TURN RIGHT onto Alhambra Valley Road and follow the 50 mile route arrows to Briones Rest Stop and then to the finish. This shortcut will save about 24 miles of riding and put you on track to comfortably complete the course within our expected time limits. If you continue on the longer route you will probably get to Port Costa and Briones rest stops after they close and you will probably be too late for the hot food and party at the finish.

Overall Closing Time

Overall closing time is 6:00 pm. We won't try to haul you off the course at 6:00 pm (these are public roads, you can ride all night if you want!) but at 6:00 pm our volunteers will be packing up to go home.