Joe, i'm not sure what the distants would be simplex,vhf/uhf is all line of site. However i do know using repeaters i can achieve up to 150 miles approximately.From Reno,Nv. i have talked with stations in Sacromento and Vacaville,Cal.
Not bad for an HT only doing 5 watts. I'm sure that a good repeater has alot to do with it,anyway your test and others may vary.
73,Stu