This Event Took Place Sat. Feb 25, 2012

Race Information

Click here for full race information.

With eucalyptus forests, grassy meadows, lakeside paths, and hill top vistas, Lake Chabot offers runners varied and stunning beauty. Our events at Lake Chabot are one of our more exposed courses, so bring sunscreen and perhaps wear a hat (an Inside Trail Headsweats hat would be a fine choice). Take advantage of our well stocked aid stations every 5-6 miles and be sure to thank the kind volunteers.

Parking at Lake Chabot Regional Park is free for all participants who arrive prior to the lots being full. There is additional free parking along the road just outside of the park. Carpooling is always strongly encouraged.

Park information: Lake Chabot, Anthony Chabot

Location: Lake Chabot Regional Park - Marina, Castro Valley, CA

Date: Saturday, February 18, 2017

Events: 5K, 10K, Half Marathon, 30K & 50K

Bib Pickup & Check-In: 7:30 AM - 9:15 AM

Start Times:5K9:15 AM
10K9:00 AM
Half Marathon8:45 AM
30K8:30 AM
50K8:30 AM

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

Course Information

Course Map

All courses are subject to change if the weather or park service demands it.

Aid Station Information

Elevation Charts

Click image to view larger chart.


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 an A4 Cooling Performance Crew technical fabric shirt. This tee is made with top-of-the-line sportswear technology to heighten performance during your toughest workouts. With sun defense, moisture-wicking technology, quick stain release, and comfortable fit, the cooling performance crew serves the needs of every athlete. It’s the perfect year-round choice for outdoor sports and exercise. Get the most out of your workout with this tough, hardworking tee.

Fabric: 4-Ounce polyester interlock features moisture wicking technology, odor resistance and stain release qualities designed to deliver maximum performance characteristics.

     ● 100% Polyester Interlock, 4.0 ounces per square yard
     ● Moisture wicking, Odor resistant, Stain release
     ● Ultra tight knit resists snagging
     ● UPF 30

To be guaranteed your shirt size, you must register by February 4, 2017.

Aid Station Supplies

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.

Local time: 11:34 AM


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