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| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| 100K (Gravel) | Gravel | May 2, 20276:30 AM | $100$110 after Feb 1, 2027 | – |
| 100 miles | Century | May 2, 20276:30 AM | $100$110 after Feb 1, 2027 | – |
| 50 miles | Bike Ride | May 2, 20277:30 AM | $90$100 after Feb 1, 2027 | – |
| 70K (Gravel) | Gravel | May 2, 20277:30 AM | $90$100 after Feb 1, 2027 | – |
| 75 miles | Bike Ride | May 2, 20277:30 AM | $95$105 after Feb 1, 2027 | – |
| 30 miles | Bike Ride | May 2, 20279:30 AM | $60$70 after Feb 1, 2027 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
The Bike Ride fee goes up to $70 on Feb 1, 2027.
Online registration closes May 2, 2027, unless the race fills first.
Sunrise on race morning is at about 6:12 AM, and the 100K (Gravel) starts at 6:30 AM. The start sits about 600 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
St. Mary's College, Moraga, CA 94575
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
National lists computed from results, entry fees, course maps and water temperatures; they refresh through the day.
Around May 2 the day usually runs from 47°F at dawn to 64°F in the afternoon, with measurable rain on about 12% of days. Cold snaps dip to 43°F and hot years reach 76°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
What the organizers of Grizzly Peak Century Ride cover on their registration page, in brief.
Schedule and packet pickup
St. Mary's College: 100 mi & 100K Gravel - Check-in is 6:30 am to 7:30 am and start anytime. 50 mi, 75 mi, 65K Gravel - Check-in is 7:30 am to 8:30 am and start anytime. 35 mi - Check-in is 9:00 am to 9:30 am. Start after 9:30am. Note, if…
Course
RideWithGPS.
Course
Your choice of many beautiful routes. Cue sheet and road markings. Rest stops at 15 - 25 mile intervals. Clothing drop at Island Picnic Area rest stop. Basic mechanic service at rest stops. SAG vehicle support. A fabulous post-ride…
Course
The century takes place on popular cycling roads. There will be riders on the course who are not doing the century, or not doing the route you are riding. Don't follow! Do your own navigation.
Course
eBikes are welcome on all of our road routes. For the gravel routes, only Class 1 ebikes are permitted due to restrictions in East Bay Regional Parks. Class 1 ebikes are those with only pedal-assist (no throttle) and a limit of 20mph for…
Rules and FAQ
The Grizzly Peak Century is a tour, not a race. Riders must obey the California Vehicle Code, and follow all the rules of the road. Riders may be cited for violations of the Vehicle Code. Riders must wear bicycle helmets at all times when…
Organize this race? Add details or a correction
There are four paved routes and two gravel routes to choose from, all of them very hilly:
30 miles (~2,600 ft of climbing)
50 miles (~4,200 ft of climbing)
75 miles (~5,900 ft of climbing)
100 miles (~8,700 ft of climbing)
70K Gravel (~4,200 ft of climbing)
100K Gravel (~6,500 ft of climbing)