Berkeley Trail Adventure

WHEN: September 18, 2021
WHERE: Tilden & Wildcat Canyon Parks
Lake Anza Lawn
End of Lake Anza Road
Berkeley, CA 94708
COST: 10K: $55 / Half: $70 / 35K: $80 / 50K: $90
CONTACT: Inside Trail Racing
Online registration will open once we have confirmation of the event date.

Add $10 if registering on or after August 21, 2021. Add $15 at check-in, if not sold out.
Pre-registration through 5:00 PM on September 16, 2021, or until sold out.


Our Berkeley Adventure Run brings runners and walkers into two East Bay gems: Tilden Regional Park and Wildcat Canyon. Tilden offers something for everyone, including an abundance of coast live oak and eucalyptus trees. Runners can enjoy shady trails broken up by open, exposed sections serving up views of the bay, Golden Gate Bridge, and, on clear days, Mt. Tamalpais. Aid stations are located every 5-7 miles, where participants can load up on fruit, potatoes, and other runner-friendly foods and beverages. This is a fabulous race for runners of all ages and is particularly a great one for those embarking on their first trail-running event.

Park information: Tilden Regional Park, Wildcat Canyon

Location: Tilden Regional Park, Berkeley, CA

Date: TBD 2021

Events: 10K, Half Marathon, 35K & 50K

Start Times:
     ● 50K – 8:30 AM
     ● 35K – 8:30 AM
     ● Half – 9:00 AM
     ● 10K – 9:15 AM

Check-In & Bib Pickup:

      Early Pickup
September 17, 2021

3:00 PM – 7:00 PM
Sports Basement – Berkeley Location
2727 Milvia Way
Berkeley, CA, 94703
      Race Day
September 18, 2021
7:30 AM – 9:15 AM
Lake Anza, Tilden Park

Time Limit: There is an 8.5 hour time limit for the 50K race.

Parking: Parking is available, free of charge at Lake Anza in Tilden Park. Carpooling is always strongly encouraged.

Race Capacity: The Berkeley Trail Adventure will have a capacity of 300 runners, across all distances.

ITR Refund Policy:
Entry fees to our trail runs are non-refundable, and we do not offer transfers or deferrals to future races. However, with advanced notice, we are happy to credit part of your entry fee to a future Inside Trail Racing event. A credit worth 50% of your original race fee will be issued if the cancellation is received at least 3 weeks prior to the race. There will be no credits or refunds provided if a cancellation is made within 3 weeks of the race. Only registered runners can participate, and you cannot exchange your entry with another runner. Credits will be available for 1 full year from its issue date.

Only registered runners can participate, and you may not exchange your entry with another individual.

We do not cancel races due to rain or heat. Due to trail work, closures, “Acts of God”, or for myriad other reasons, permitting agencies may require changes to the publicized courses at any time prior to an event. This is out of our control, and we therefore will not offer refunds or credits in such a situation. If a race location is changed due to park closures, we will automatically transfer the registration over to the new venue, or entrants may choose to cancel their entry (non-refundable) and we will mail awards.

Hosting a trail running event is an expensive and risky endeavor. All race costs are paid for well in advance of race day, so there is no financial gain to be made if a person does not show up on race day. We want all of our registered runners to show up, run, and have fun. While we understand that injuries, conflicts, emergencies, deaths, and other unfortunate events happen and may impact your plans for participation, we must adhere to our cancellation policies.


50K (31.0 Miles with 6,800′ Elevation Gain)

35K (21.6 Miles with 4,600′ Elevation Gain)

Half Marathon (13.0 Miles with 2,800′ Elevation Gain)

10K (6.0 Miles with 1,050′ Elevation Gain)

Detailed Course Map | Turn by Turn Directions | Aid Station Distances and Cutoffs | Elevation Profiles

Aid Stations
Inside Trail Racing aid stations are replete with an optimal variety of glycogen-replenishing, electrolyte-replacing products. The following is a list of some of the foods and beverages each aid station may provide: Gu Energy gels and chews, all-natural nutrition bars from Larabar, trail mix, pretzels, potato chips, Oreo cookies, Pop Tarts, boiled potatoes with salt, Coke, Mountain Dew, Ginger Ale, water, Tailwind Endurance Fuel, PB&J sandwiches, M&M’s, Mike & Ike’s, salt tablets, and tangerines. Aid stations are also equipped with general first aid items but no anti-inflammatory medicine. As distances between aid station vary, we strongly encourage all runners to carry at least one 20oz bottle during their run.

Tailwind is mixed so that it contains 180 – 200 calories per 20 fluid ounces.


Without the support of enthusiastic and caring volunteers producing our races would not be possible. Volunteers of all ages and abilities help with setup, check-in, aid stations, course marshaling, timing, and post-race food.

Volunteering is a fun, novel way to experience races, play in the outdoors, and spend time with friendly people. All volunteers receive a free race T-shirt, free food, and the ability to earn credit toward a future Inside Trail Racing event, commensurate to the amount of time worked. Five hours of assisting an event results in a free race credit or Inside Trail merchandise.

To volunteer for this year’s event, please submit our online volunteer form.


Overall winners of each race distance will receive a medal, a custom glass Stein and an item from the Inside Trail Racing schwag bag.

All ultra-marathon distance finishers will receive a custom printed Pint Glass with the race logo.

All other finishers will receive a custom medal with the race logo.

The Dead Last Finisher (DLF) in each even will receive a custom award.

Age-group medals (3 deep) will be awarded in the following categories, for both males and females:
     ● 12 and under
     ● 13 – 19
     ● 20 – 29
     ● 30 – 39
     ● 40 – 49
     ● 50 – 59
     ● 60 – 69
     ● 70 and over


All registered runners will receive Port and Company performance blend t-shirt.. This tee is made with top-of-the-line sportswear technology to heighten performance during your toughest workouts. A soft cotton hand feel joins Dry Zone® moisture-wicking technology for unbeatable comfort and performance. Get the most out of your workout with this tough, hardworking tee.

     ● 4.5-ounce, 65/35 poly/cotton
     ● Removable tag for comfort and relabeling
     ● Side seamed with a contoured body for a slender, athletic fit

To be guaranteed your shirt size, you must register by September 4, 2021.


Distance Name Age Year Time
10K – Male Anthony Cortes 23 2017 37:20
10K – Female Becca Loman 30 2018 42:06
Half Marathon – Male David Roche 28 2016 1:28:07
Half Marathon – Female Megan Roche 26 2016 1:42:13
35K – Male Scott Trummer 26 2017 2:26:28
35K – Female Anna Bretan 28 2013 2:48:46
50K – Male Shane Young 30 2016 4:01:36
50K – Female Larisa Dannis 27 2014 4:27:00

Berkeley Trail Adventure | September 21, 2019

10K Overall
Half Marathon Overall
35K Overall
50K Overall


Berkeley Trail Adventure | September 22, 2018

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Half Marathon Overall
35K Overall
50K Overall


Berkeley Trail Adventure | September 23, 2017

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Half Marathon Overall
35K Overall
50K Overall


Berkeley Trail Adventure | September 24, 2016

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Half Marathon Overall
35K Overall
50K Overall
Berkeley Trail Adventure


Berkeley Trail Adventure | September 26, 2015

10K Overall
Half Marathon Overall
35K Overall
50K Overall


Berkeley Trail Adventure | September 27, 2014

10K Overall
Half Marathon Overall
35K Overall
50K Overall
Berkeley Trail Adventure


Berkeley Trail Adventure | September 28, 2013

10K Overall
Half Overall
35K Overall
50K Overall
10K Age Group
Half Age Group
35K Age Group
50K Age Group

Berkeley Trail Adventure | September 29, 2012

10K Overall
Half Marathon Overall
35K Overall
50K Overall
10K Age Group
Half Marathon Age Group
35K Age Group
50K Age Group