Valencia, California
- 28The Biggest Loser RunWalk at Six Flags Magic Mountain - Los Angeles, CA 5K/10K/Kids 1 Mile Fun Run - Valencia - A race for all fitness levels, whether you are ready to set a personal record or this is your first race, come join us at The Biggest Loser RunWalk! ... more on The Biggest Loser RunWalk at Six Flags Magic Mountain - Los Angeles, CA 5K/10K/Kids 1 Mile Fun Run