Cal Tri 5k, 10k Castaic Lake
Castaic, California, United States
Jun 20, 2026 - Saturday
5k, 10k
Race Information
Castaic Lake is located in northern Los Angeles County, just 45 miles north of downtown L.A. and is the largest state water project reservoir in Southern California, containing over 11,000 acres of parkland and open space habitat. Choose from 18 event options, including a 5k and a 10k run.
Related Events
Cal Tri 5k, 10k Castaic Lake
Date: Jun 20, 2026 - Saturday
Size: 100 - 500 participants
Location: Castaic, California
Cal Tri 5k Charlottesville
Date: Aug 30, 2026 - Sunday
Size: 100 - 500 participants
Location: Charlottesville, Virginia
Cal Tri 5k, 10k Fort Worth
Date: Sep 27, 2026 - Sunday
Size: 100 - 500 participants
Location: Fort Worth, Texas
Cal Tri 5k, 10k Charlotte
Date: Oct 10, 2026 - Saturday
Size: 100 - 500 participants
Location: Statesville, North Carolina
Cal Tri 5k, 10k Los Angeles
Date: Oct 18, 2026 - Sunday
Size: 1 - 100 participants
Location: Los Angeles, California
Cal Tri 5k, 10k Newport Dunes
Date: Nov 1, 2026 - Sunday
Size: 100 - 500 participants
Location: Newport Beach, California
Cal Tri 5k, 10k Lake Perris
Date: Apr, 2027 (TBD)
Size: 100 - 500 participants
Location: Perris, California
Cal Tri 5k, 10k Culpeper
Date: Apr, 2027 (TBD)
Size: 100 - 500 participants
Location: Culpeper, Virginia
Cal Tri Ventura
Date: May, 2027 (TBD)
Size: 100 - 500 participants
Location: Ventura, California
Cal Tri 5k, 10k Richmond
Date: May, 2027 (TBD)
Size: 100 - 500 participants
Location: Richmond, Virginia
👍 Run Pick of the Month: Surf City 10
📍Huntington Beach - Sunday September 20, 2026
😄 Why We Like This Run
✅ The "PR-Perfect" Course
✅ Unrivaled Coastal Scenery
✅ The Post-Race Beach Party
The oldest 10-mile race in the United States, this event is a legendary staple of the Orange County running scene. Whether you're tackling the signature 10-miler, the 10K, or the 5K, you’re in for a high-energy morning that perfectly captures the "Surf City USA" spirit.
From the iconic starting line at the Huntington Beach Pier to the high-fives from volunteers in surf gear, this race is less of a grueling workout and more of a seaside celebration.
🏃 Training for This Race?
Get a personalized training plan that adapts for every run. RunDot analyzes every run and automatically adjusts your training plan.
🎁 2 weeks free for RunGuides runners
🏃 Looking For More Runs Near Los Angeles?
Find another distance:
Race Facts
Race Size: 100 - 500
Course Type: Road
Boston Qualifier: No
Kids Run: Yes
Where to Stay
Use this map to find hotels and airbnb accommodation near this race location.
