Monday: (05/17) I unloaded the concrete bags from my car. I met my fellow hikers in Portola Valley for a hike at Windy Hill Open Space Preserve. We hiked up to the top of the mountain on the Razorback Trail then along the Lost Trail to the picnic area. It was very windy and cold there so after a quick stop we hiked back on the Hamm's Gulch Trail. About an 8.7 mile hike. There was fog and there had been rain along the Lost Trail which was very muddy. I got gas and lunch before heading home. I made a ham and egg sandwich for breakfast. I picked up a late lunch from Los Altos Taqueria. Ham and cheese sandwich for dinner.