Foothills Nature Preserve Ruck

6.8 miles, 1433 ft elevation gain. This is a moderately challenging hike. Carry weight of your choice. Bring water/electrolytes. Might want to use some tick spray!

Los Trancos Trail via Steep Hollow Trail on AllTrails
https://www.alltrails.com/trail/us/california/los-trancos-trail-via-steep-hollow-trail?sh=guoqzn&utm_medium=trail_share&utm_source=alltrails_virality

Park: Orchard Glen Parking lot (see pic in comments)

It is $6 to enter the preserve.

Also check out other Trips & Adventurous Activities in Los Altos.