One day, we (Gabor, Kati, Medha and I) decided to take a little hike. From I-House we hiked up to Tilden Park, went by Lake Anza, Tilden Nature Area, Jewel Lake, up to Peace Grove, a bit along Nimitz trail, down into the other valley (using my nifty EBMUD permit) to San Pablo Reservoir, walked south a few miles along the water, then went back up to Inspiration Point. It was getting late so we stopped there and hitchhiked back home. All in all, about 14 miles, I think.