Blackett's ridge is a popular hike and can sometimes be a bit crowded, but that's only because it is so good. The Blackett's Ridge Trail packs a great punch: it is easily accessible, beautiful, short enough that you don't have to plan your entire day around it, and challenging enough to provide a very rewarding workout. Blackett's Ridge is simply one of the best hikes in southern Arizona!
Park at the Sabino Canyon Visitor Center, this is a fee area. On the east side of the parking lot there is a small walled area that marks the start of the hike - take the obvious/wide dirt path east from this spot - some trail signs will help you along the way. When you reach the paved road take a right (note that you can use trails that parallel the road, but I prefer just using the road...At the first paved intersection take a right (just before a set of bathrooms), this will take you over a bridge. At the next junction go across the road onto a trail. You will quickly reach a trail junction - take a left onto the Phoneline Trail (a right will take you onto the Bear Canyon Trail towards Seven Falls). After about .5 miles the Blackett's Ridge Trail splits off to the right/east from the Phoneline Trail. From here follow the trail to the top! If it is your first time, know that the trail is quite a workout after you turn off of the Phoneline Trail - and that the first several times (at least) you think you see the 'top' it is not really the top!