Red Rock Sunset Rumble

The Red Rock Sunset Rumble returns to Topanga, California on September 19th, offering runners a challenging yet picturesque journey through the Santa Monica Mountains under the setting sun. This year marks another installment of what has become an iconic event in Southern California's running calendar, with participants gathering to tackle the rugged terrain and enjoy the stunning views from Red Rock Canyon.
On race morning at around 4:00 PM, runners can expect a mix of fireroads and singletrack trails that wind through Topanga’s natural beauty. The course conditions are firm but slightly soft underfoot, providing traction while maintaining an authentic trail feel. As temperatures drop with the setting sun, participants will experience cooler evening air compared to earlier in the day.
Since its inception, the Red Rock Sunset Rumble has grown into a beloved community event that supports local businesses and runners alike. Each year sees hundreds of enthusiastic competitors from across Southern California gathering for this unique 10k race. Notably, the fastest Topanga natives are awarded special recognition as "Local Legends," adding an extra layer of pride to the competition.
The Red Rock Rumble course is steep and rugged with nearly a thousand feet of elevation gain throughout its ten-kilometer length. Runners will encounter aid stations at 1.8 miles and again around 3.6 miles, providing hydration options including Skratch Hydration and water. The final stretch offers a dramatic descent to the finish line, punctuated by breathtaking views that reward those who endure the challenging climb.
Weather conditions in September typically offer firm trail conditions with moderate UV exposure, making it ideal for evening runs when temperatures start cooling down after sunset. Humidity levels remain relatively low during this time of year, ensuring runners can focus on their performance without excessive heat stress or discomfort from high humidity.
The Red Rock Sunset Rumble offers a 10k race and the Hiker's Delight, a non-timed hike to Calabasas Peak summit starting earlier in the day.
To register for this year’s event, visit https://ultrasignup.com/register.aspx?did=134889 where you can find detailed information about each distance and their respective fees: $110.00 for the 10k Rumble and $97.00 for the Hiker's Delight. Registration closes on September 12th at midnight Pacific Time.
Race day begins with shuttle services starting at 2:30 PM, followed by runner check-in from 3:00 to 4:00 PM. The Hiker’s Delight starts promptly at 4:00 PM while the main race kicks off at 4:45 PM for a sunset finish around Topanga's Red Rock Road course.
Participants should meet at 23601 W. Red Rock Road on September 19th to start their journey through one of California’s most scenic and challenging courses. Age requirements are set by the event organizers, ensuring safety and fair competition among all participants.
The Red Rock Sunset Rumble in Topanga, California on September 19th offers a unique blend of natural beauty, competitive spirit, and community support, making it a must-attend for trail runners looking to challenge themselves amidst some of Southern California’s most stunning landscapes.