Hardrock 100
Our Mission is to increase women’s participation and opportunity in trail running and hiking through inspiration, education and empowerment.
Trail Sisters Approved: Trail Sisters Approved
Trail Sisters Half Marathon @ Lake Sonoma
The Trail Sisters (TS) Half Marathon is a women’s only event. It was created to foster encouragement and camaraderie amongst all abilities and experience levels. This out and back course starts with steep trail ascent to South Lake Trailhead, but also provides a speedy descent to the finish. True to its label, you can expect relentless […]
Lake Sonoma Relentless
Join us in Healdsburg, California, on April 12th 2025 for the TERREX Lake Sonoma 50 Mile, Marathon, and Trail Sisters Half Marathon! We are excited to announce adidas TERREX as our presenting partner! We are stoked to team up with Mountain Oupost to bring you full livestream coverage, athlete panels, interviews, and commentary from special […]
