There are individual state 5k records for specific events, so just search in your area or nearby locations for the most popular opportunities. The overall record previously was a former Olympic runner (Ian Dobson with his Australian cattle dog and finishing time of 15:45) but that was back in 2010, so I do not know if that is still the top listing.
Active has some good suggestions for these type of events across the country called 10 races to run with your dog. Also, look for "Bark in the Park" events...those are always a great bet for the type of activity you are interested in.
P.S....remember to train well with your Pointer and make sure she is accustomed to many other dogs. I have a dalmation/springer spanial mix. She is a great runner, but gets easily distracted in the herd.
Wishing you all the best..it is a very rewarding venture.