More information on the area
Hiking
The Grand Canyon
It's about 118 mi / 190 km /2.5 hrs away and it's a nice drive. You can do it as a day trip or overnighter.
Northern Arizona
In addition to the Grand Canyon, you might search the web for information on visiting Flagstaff, the Navajo Nation, the Hopi Nation, Jerome Mining Town, Lowell Observatory and The Museum of Northern Arizona.
Other things
Sedona itself offers many things to the visitor. Golfing, Jeep tours, balloon rides, yoga and meditation centers, spas, etc. Too many to list, but you can find more about them with a little research.