Spencer Butte, so I opted to hike up the shortest route, a mere .6 miles to the top. Although short, it is steep, with over 700 feet of elevation gain.
Even that trail is well-used, thanks to the butte's location close to the city. The route was mostly easy to follow, although there were a lot of shortcuts carved out by impatient hikers.
The view from the top was nice in all directions. I wouldn't travel cross-country just to get here, but many other cities don't have a "local" hike as nice as this.