As with all lower elevation trails in this area. June through September may be too hot for a comfortable run. Many choose to run this trail at night during this time. However, there are no seasonal closures in Saguaro National Park.
The trail has a few rough spots with sections of the trail partially washed out. Even so, this is a very popular trail, and you will likely encounter many trail runners.
The beginning of this trail is marked by a large, paved parking lot. After less than 1/2 mile into the run, you'll come to an intersection.
Turn left to continue on Sweetwater Trail. The next section of the trail will take you through a large wash and into a canyon that the trail stays in for the remainder of the run. After the wash and a quick set of switchbacks, the trail stays at a consistent grade all the way to the Sweetwater Saddle.
As you make your way up the trail, don't forget to look back for a unique view of the Santa Catalina Mountains! The high canyon walls block out most of the city to provide a perfect natural frame.
The end of the trail is marked by a large, open area and an intersection with King Canyon Trail
Watch your step! Rattlesnakes like to get some sun in the middle of the trail.