Just read the "starting/ending at the Y" part -- if you leave the Y, run on Maple St away from downtown (library on your right) after half a mile or so it ends at Mountain Ave, turn right and then the 1st or 2nd left onto Primrose Place, which is 1 block long -- turn right at the end (Oak Ridge Ave), and look for a small path that takes you down the steep hill to Glenside Ave. Turn right, past the soccer field, over the highway/past the traffic light, and the next left will bring you down to the pond/stream.
Leave a trail of breadcrumbs or something to find your way back...
Alternately, if you stay on Oak Ridge, it goes for a little over a mile, you can just do back-and-forths or switchbacks in that nieghborhood between Oak Ridge and Mountain...if in doubt, ask, everyone knows where the Summit YMCA is.
Alternately still, from the Y, turn left out of the Y, cross the RR tracks, and the next light is Springfield Ave. Turn left and it goes for more miles than you can run. It's a farily busy road but gets wide enough to be runner-friendly and makes for a very simple out & back.
Wish yr daughter good luck in the meet.