East Bay Regional Park Trails Challenge includes 20 designated trails ranging from easy to challenging where participants walk, ride or roll five trails, or 26.2 total miles, by Dec. 31. Walking, biking and horseback riding are all ways visitors can participate. Visit ebparks.org/trails-challenge.

Wednesday, September 10, 2025, 10:00am

Wednesday, September 17, 2025, 10:00am

Wednesday, September 24, 2025, 10:00am

Wednesday, October 01, 2025, 10:00am

Wednesday, October 08, 2025, 10:00am

Wednesday, October 15, 2025, 10:00am

Wednesday, October 22, 2025, 10:00am

Wednesday, October 29, 2025, 10:00am