We did the Hershey Half relay last year. I went first, to get us under the minimum pace, so DW could just enjoy it. Plus- I had less issues running through Hershey Park than she did during the 10k. Some of the turns and elevation changes are quick. She did the second half, which, other than some hills, she loved. In fact: she declared that we would do it again, but not as a relay team. She found the running surface during the back half to be very nice (freshly paved, it seems), and the kids from the Milton Hershey school were incredibly supportive. Unfortunately, a few days later, knee pain settled in (fall 2015), so we've postponed it for this year.
DW went to a sports medicine MD last week, as her knee pain has returned. Told to take 2 weeks off from running, and schedule PT. He feels she should be fine by W&D.