Altadena Forever Run - Lasaa Mug Run
Updated
Sunday, January 10, 2027, first start 8:00 AM, in Altadena (Start & Finish : Mariposa Junction (Mariposa Street between El Molino Avenue and Lake Avenue)). Distances: 1K, 5K, 10K. Entry from $55 to $65; the 10K goes from $65 to $70 after November 1.
- Date
- Sunday, January 10, 2027
- Start time
- 8:00 AM (earliest wave)
- Location
- Start & Finish : Mariposa Junction (Mariposa Street between El Molino Avenue and Lake Avenue), Altadena, CA 91001
- Area
- Pasadena & San Gabriel Valley, Los Angeles
- Distances
- 1K5K10K
- Course
- Road or path
- Price
- $55 to $65 plus the platform's processing fee
- Next price increase
- Sunday, November 1, 2026: 10K $65 → $70
- Registration
- Open. Opened February 17, online signup closes Sunday, January 10, 2027
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details. Sign up by November 1 to pay $65 instead of $70.
Course and race notes
Thank you for registering for the 2027 Altadena Forever Run!
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.