We went on a hike today with Rod (redbirddog from the forum) and his 2 dogs Bailey & Chloe as well as another V (Toby?) and the people he owns. The dogs had a blast and Riley was fast enough to run with the big dogs! I think we'll definitely be coming back to this park for some more off-leash adventures.
If you go, do check your dog carefully for ticks as cattle frequent the area. We thought Riley hadn't picked up any, but I noticed her fur was stuck up a little in one spot on her neck and sure enough there was one that had already bit down on her! :(