Bay Ridge 100k and Dick Collins 50 Mile

2018 Registration is OPEN!

Cull Canyon Regional Park, Castro Valley, CA

October 6, 2018


Blog and Updates!

7/31/2018 – Locations from Drop Bags and Pacers added. Check the Aid Stations section of each race under the Course tab.
7/26/2018 – Revised elevation profile for Dick Collins 50 mile is approximately 7,800. New course maps are posted under Course and here.
7/26/2018 – Added elevation profile for Bay Ridge 100k. Net gain is approximately 10,000.
4/29/2018 – 2018 Maps posted under Course tab!

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. Click on the course tab above to see the new courses!

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 Skyline Gate. The 100k race will proceed to the Steam Trains. Maps and narrative are presented under the course tab above. The new course will have about 7,800 ft in vertical for the 50-mile and about 10,000 ft 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 starts at 5am from Canyon Middle School, which is where you’ll park. You’ll finish at Cull Canyon and we’ll make sure all your stuff is there for the finish. The 50 mile starts at 6 at Cull Canyon, where you’ll park. Time limits are:

100k (5am start)  = 16.5 hours
50 mile (6am start) = 15.5 hours

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.

Because of the generous time limit, there is no early start for the Dick Collins 50-mile.

Schwag and Awards

100k runners have the chance to earn the Bay Ridge Rhino buckle along with a shirt and our signature finisher medals. 50 milers receive shirts, wine glasses, and medals. 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! 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 will be the Brian Maxwell Bench in Tilden Park. The altitude profile for the 2018 Bay Ridge 100k is around 10,000 ft.
  • Dick Collins 50 mile

    NEW! Dick Collins 50 mile course will leave Cull Canyon Recreation Area, proceed through Chabot Staging Area. The course then moves over to Chabot Marina, where you'll find aid at the Cove Picnic Area, the start/finish location of the race in past years.

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

Times, Getting here, Where to stay


5:00 AM: Bay Ridge 100k

6:00 AM: Dick Collins 50 mile

Up to 50 runners can start at 5am. Contact us for details.


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 Sibley Park. 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