2025 Stinson Beach/Muir Woods Marathon, Half Marathon & 7 Mile
- Trail Run
- Marathon
- Half Marathon
- 11 km
Mt. Tamalpais is the dominating feature in Marin County. Any true trail runner who sees it wants to run up it. Here’s your chance. Our Mt. Tam Trail Run begins at Stinson Beach and climbs (and climbs!) to perched views from Tam before returning via some of the best trails the Headlands have to offer until reaching the beach and bountiful post race food. Bring the family and enjoy an afternoon with friends in the sand and surf.
Stinson Beach, CA
Female and Male Top 3 overall. 1st - $300 , 2nd $200 , 3rd $100 .
Saturday, November 16, 2024
10K, Half Marathon, 30K, 50K
SF Running Company Mill Valley 12:00 PM - 5:30 PM
6:30 AM – 8:00 AM
10K - 8:00 AM
Half Marathon - 8:00 AM
30K - 7:30 AM
50K - 7:30 AM
There is an 8.5 hour time limit for the 50K race
Parking is available within the Stinson Beach Day Use Area and is free of charge. Carpooling is always strongly encouraged.
The Mt. Tam Trail Run will have a capacity of 500 runners, across all distances.
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, chews, and Stroopwafels, trail mix, pretzels, potato chips, Oreo cookies, Coke, Mountain Dew, Ginger Ale, water, Skratch Labs Sports Hydration Mix, PB&J sandwiches, M&M’s, salt tablets, bananas, watermelon, and tangerines. Aid stations are also equipped with general first aid items, including Salt-Stick tablets, but no anti-inflammatory medicine. Skratch Labs is 80 calories per serving with minimal sugar (4g per 100 ml) and a ratio of sugar (glucose + fructose) that is optimized for faster absorption, an electrolyte profile that actually matches what is lost in sweat (800 mg sodium, 80 mg potassium, 100 mg calcium, and 80 mg of magnesium per liter) As distances between aid station vary, we strongly encourage all runners to carry at least one 20oz bottle during their run.
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. To volunteer for this year’s event, please submit our online volunteer form.
All registered runners will receive a District Perfect-Tri tri-blend 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, this tri-blend 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.
The top three overall winners (male and female) of each race distance will receive a custom trophy with the race logo. In addition, the top finisher for each distance (male and female) will receive a special item from one of Inside Trail’s sponsors. All finishers will receive a custom medal with the race logo. All 50K finishers will receive a pint glass 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 various categories.
Entry fees to our trail runs are non-refundable in all cases, and we do not offer credits, transfers, or deferrals to future races except as described below. Only registered runners can participate in our races, and you cannot exchange your entry with anyone else in any case. We are happy to issue a credit worth 50% of your original race fee toward a future Inside Trail Racing event if we receive your cancellation at least 3 weeks prior to the race. Credits will expire 1 year after the date issued. There will be no credit provided if a cancellation is made within 3 weeks of the race. While we understand that last-minute injuries, conflicts, emergencies, deaths, and other unfortunate events affecting registered runners can happen and may impact your plans for participation, we must adhere to our cancellation policy stated above and cannot offer any credits, refunds, transfers, or deferrals in any of these cases.
50K Registration | $130.00 | See |
30K Registration | $105.00 | See |
1/2 Marathon Registration | $90.00 | See |
10K Registration | $75.00 | See |
Help us keep everything accurate. Report any issues with this event.