
I've been going up Mission Peak since I was 6 or 7. It's an interesting hike, because there are two close-to-sea-level trailheads, as well as trails that connect with other, more distant parks (Sunol to the east and Sandy Wool to the south), so you can vary your hiking experience a great deal.
What's funny to me is that, for twenty years through the early 90s, there was hardly anybody on the trail. It would be such a remarkable occurrence to encounter another hiker that you'd stop and chat for a few minutes. But in the last ten years, Mission Peak has become a huge training ground for mountaineers, who practice their hikes by going up to the peak and back as fast as they can in preparation for trips to Mount Whitney, Shasta, the Rockies, et cetera. So the shortest trail - from Stanford avenue - is incredibly crowded all the time, to the point where it's rare to have any time where you're alone on the trail. Now, you can take the Horse Heaven trail or hike any of the other trails and still get that sense of communion with nature away from humanity, but once you get to the peak, it's like a party at all hours of the day.
What's funny to me is that, for twenty years through the early 90s, there was hardly anybody on the trail. It would be such a remarkable occurrence to encounter another hiker that you'd stop and chat for a few minutes. But in the last ten years, Mission Peak has become a huge training ground for mountaineers, who practice their hikes by going up to the peak and back as fast as they can in preparation for trips to Mount Whitney, Shasta, the Rockies, et cetera. So the shortest trail - from Stanford avenue - is incredibly crowded all the time, to the point where it's rare to have any time where you're alone on the trail. Now, you can take the Horse Heaven trail or hike any of the other trails and still get that sense of communion with nature away from humanity, but once you get to the peak, it's like a party at all hours of the day.