The Miami Group offers many day hike opportunities. There are regularly scheduled hikes. These vary in difficulty and length and explore many of the areas nearby.
There are hikes offered out of town as well. They may be in Red River Gorge, Clifton Gorge, The Knobstone Trail, etc. These hikes also vary in difficulty.
One should be sure that she/he has the appropriate skills for the hike. The difficulty rating (the number at end of the title) as well as contact with the outing leader will insure that the trip is appropriate for you.