Big Alta

Big Alta

28

K

50

K

|

Saturday, March 22, 2025 |

Mar 22, 2025

CA

Trail summit showdown in Marin County’s iconic hills

Trail summit showdown in Marin County’s iconic hills

Overview

The Big Alta is where breathtaking California trails collide with pure trail community energy. On the legendary terrain of Marin County, runners take on single-loop adventures that test grit and reward with sweeping San Francisco Bay views. From ridge to ridge and summit to summit, you’ll feel the pulse of the trail community, the high of shared accomplishment, and the vibe of Freetrail and Daybreak Racing’s signature style.

Whether you take on the epic 50K or the exhilarating 28K, you’ll find yourself immersed in a course that celebrates both challenge and joy. With Loma Alta and Big Rock Ridge standing tall, this event is more than a race—it’s a festival of movement, connection, and wild beauty.

This year's event took place on

Saturday, March 22, 2025

Registration

Opens

TBD

Closes

TBD

Registration Fee

Trail Sisters Approved logo

UTMB Index Qualifier

Official race details:

Logistics

The race is staged at Marinwood Community Center and Park, San Rafael, California, about 22 miles north of San Francisco. The nearest airports are San Francisco International (SFO) and Oakland International (OAK).

Driving Directions
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Parking

All participant parking is along Miller Creek Road near Marinwood Community Center. Parking in the Marinwood Park lot is prohibited.

Lodging

Numerous hotels are available within a 5-10 minute drive in San Rafael and Novato.

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Policies

Cancelations & Deferrals

Volunteers

Charity & Beneficiary

This event is a collaboration between Daybreak Racing and Freetrail, who support the trail running community and promote environmental stewardship.

Land Acknowledgement

We honor and recognize that we gather for this event on the traditional lands of the native Coast Miwok people, who have occupied and stewarded these lands for countless generations.

About

Daybreak Racing

Daybreak Racing is a Pacific Northwest–based trail running company dedicated to producing beautiful, original, and challenging trail races in spectacular natural settings. Their events emphasize safety, participant support, and an inclusive, festive atmosphere, blending professional-level race production with a welcoming, community-driven vibe. Every event features well-marked courses, thoughtfully staged venues with amenities, professional medical support (not volunteer‑only), high‑quality aid stations, and custom finisher awards and swag. They also integrate eco-responsibility into operations, including recycling and composting programs, and make donations to local beneficiaries for each race.

The team behind Daybreak Racing is led by Jeremy Long, a native of the Oregon Coast and race director whose background in public health and passion for trails shapes the company’s values. He’s supported by Aaron Long and Mack Robertson, who bring a blend of coaching, event coordination, and outdoor community engagement to ensure every race is thoughtfully executed and rooted in local stewardship.

Disclaimer

We make every effort to provide accurate and up-to-date information on Kåduka, but details may change. Please always confirm the latest information on the official race website. See something that needs correcting? We’d love to hear from you! Send us a note at feedback@kaduka.app

We make every effort to provide accurate and up-to-date information on Kåduka, but details may change. Please always confirm the latest information on the official race website. See something that needs correcting? We’d love to hear from you! Send us a note at feedback@kaduka.app

© 2025 Kåduka, LLC. All rights reserved. Kåduka and the Kåduka logo are trademarks of Kåduka, LLC. All other trademarks, logos, and brand names are the property of their respective owners.

Handcrafted with

in the beautiful PNW

© 2025 Kåduka, LLC. All rights reserved. Kåduka and the Kåduka logo are trademarks of Kåduka, LLC. All other trademarks, logos, and brand names are the property of their respective owners.

Handcrafted with

in the beautiful PNW