From Glacier Point, you could hike Pohono Trail (3.9 miles) that provides amazing view of the Valley, High Sierra, Half Dome and Yosemite Falls. You could also choose to hike to Sentinel Dome and Taft Point which you will not regret. The view is worth all the hiking effort.
It is 1.2 miles from Glacier Point to Sentinel Dome and another 2.7 miles to Taft Point. There are steep slops and rocks / stones along the way. Use hiking sticks if you have. of course, bring plenty of water and wear a good hiking boots!