Bay Ridge 100k and Dick Collins 50 Mile

2018 Registration is OPEN!

Cull Canyon Regional Park, Castro Valley, CA

October 6, 2018


UPDATE 3/21/2018

The Bay Ridge Endurance Runs stand on the shoulders of giants.

These races inherit the grand legacy of the Dick Collins Firetrails 50 and take it one step further with the new Bay Ridge 100k. NEW IN 2018, the races will start and finish at Cull Canyon Regional Park. Maps and course COMING SOON!

NOTE to Runners: If you plan to check out the course from Cull Canyon, beware that you’ll pass through EBMUD land which requires you to have a day use permit. They’re cheap and worth having! You can find them here.

We are proud to say that Bay Ridge Endurance Run is a USATF sanctioned event. It consists of two races: Bay Ridge 100k and Dick Collins 50 mile. We are not currently planning to offer a marathon race in 2018.

The Courses

New in 2018, we will be starting and finish at Cull Canyon Regional Park, just minutes from Lake Chabot. This change gives us more time for everyone to finish without as much scrambling around at the end of the race. Also, this new course features more single track! This single track is the first and last six miles of the races.

With the new start and finish, the Dick Collins 50 mile race will turn around at Sibley Park. The 100k race will proceed to the Wildcat Canyon Road. Maps, altitude profiles etc will be coming shortly. The new course will have about 8,000 ft in vertical for the 50 mile and 10,000 for the 100k.

Race day weather can be hot, perfect, or cold and raining. As was said of the race in years past, “previous years race week has included the following: fire, earthquake, flood, and stock market crash.”

Starting Time, Time Limits, Changing Distances

The 100k and the 50 mile start at 6. Time limits are:

100k (6am start)  = 15.5 hours (ask us about early starts)
50 mile (6am start) = 15.5 hours

For both races, we can offer an early start at 5am, but these are limited to 50 runners and first priority will go to 100k runners. Contact us for more info. Cutoffs are firm because of our permits and the general curfew in the East Bay Regional Parks. All cutoffs are firm and you will be removed from the course if you miss them.

Changing distances will not be allowed during the race. If you start in the 100k, you will not be allowed to ‘drop down’ to a shorter distance during the race and receive an official finish. If you wish to change distances, you must do so before the start.

Schwag and Awards

100k runners have the chance to earn the Bay Ridge Rhino buckle along with shirt and our signature finisher wood-allions. 50 milers receive shirts, wine glasses, and wood-allions. Age Group awards are 3-deep for the 100k and 50miler.

Aid Stations, Crew Access, Pacers…and Bathrooms

Complete detail on the location and spacing of the Aid Stations is to come ASAP but for information purposes, know that they are 3-4.5 miles apart. Crew has access to many of these stations. For the 50 mile and 100k pacers will be allowed from Skyline Gate on the return route only.




  • Bay Ridge 100k - New course COMING SOON!

    COMING SOON! The 2018 Bay Ridge 100k will leave Cull Canyon, pass through Chabot Staging Area and follow much of the 2017 course. The turn around point, tentatively, will be the intersection of Sea View and Wildcat Canyon Road in Tilden Park. The altitude profile for the 2018 Bay Ridge 100k is just under 10,000 ft.
  • Dick Collins 50 mile - COMING SOON

    COMING SOON! Dick Collins 50 mile course will leave Cull Canyon Recreation Area, proceed through Chabot Staging Area and then follows much of the 2017 course. The new turn around point for this out-and-back course will be Sibley Park.

    The altitude profile for the 50 mile race is 7,800 ft.

Times, Getting here, Where to stay


6:00 AM: Bay Ridge 100k

6:00 AM: Dick Collins 50 mile


The race will be held at Cull Canyon Recreation Area, starting at 18627 Cull Canyon Rd, Castro Valley, CA 94552 This location is a short 20 minute drive from downtown Oakland and approximately 40 minutes from downtown San Francisco.


If you're coming from outside of the Bay Area, there are a number of places to stay near Lake Chabot. Please use this link to see the closest hotels to the starting point.


There is both on- and off-street parking at Cull Canyon. For the 100k runners, expect to park on-street outside the park if you expect to finish after 9pm. For others, you have your choice.

Awards, Drop bags, Pacers, Time limit


Everyone receives an award for finishing. The 100k runners receive the coveted Bay Ridge 100k belt buckle. Dick Collins 50 runners receive medals and the traditional Dick Collins wine glass. Competitive Awards will be given to the top overall male and female, as well as the fastest male and female finishers in each 10-year age group.


We support drop bags at the Skyline Gate Aid Station. Bring your bags to the start on the morning of the race and we'll transport it to the aid station in time for your arrival. Bags will be returned to the finish after the aid station closes. Please be sure to clearly identify your name and number on your bag.


Pacers are allowed for the 100k and 50 mile, starting at the Skyline Gate Aid Station on the return. Pacers must provide their own transport to these locations. There are not shuttles provided by the race.. Pacers are not allowed in the Marathon.


The time limit are:

100k = 15.5 hours*

50 mile = 15.5 hours*

Early starters can have up to 16.5 hours and will receive an official finish.

All time limits and cutoffs are firm. You will be removed from the course if you miss them. Additionally, runners are not allowed to change distance during the race and receive an official finish. If you wish to run a different distance, you must do so when signing in for the race.

Because the East Bay Regional Park curfew is 10pm all our cutoffs are firm. Runners will be removed from the course if they are not on pace to finish within the curfew.

Contact us for early start options if you think you may need more time.

Frequently Asked Questions

Is there a pre-race packet pickup?

We will have packet pickup on the Friday before race day. Location to be announced.

Can I get my bib on race day?

Of course.

Are there places where my friends and family can crew or watch?

Most of the aid stations are vehicle accessible. Look under Aid Stations for each race and many of them have a link to driving directions.

What sport drink will there be?

We will be serving Gu20 sports drink and Gu gels.

Do you need volunteers?

Our races depend on the generous spirit of the running community to ensure every participant is well supported. Volunteers will receive a free entry to a future Scena Performance event. Please fill out the volunteer form to indicate your interest and we'll get back to you with more information.

Bay Ridge 100k and Dick Collins 50 Mile