I don't think so
Horses are not allowed on trails.
There is a park in Dacula that allows horses. They have a specific parking lot for the trailer. https://www.gwinnettcounty.com/web/gwinnett/Departments/CommunityServices/ParksandRecreation/OurParksandFacilities/GuidetoYourParks/HarbinsPark
Not that I know of no horse's
If your local, and you use your horse for transportation I'm sure they couldn't refuse your entry, as far as trailz there is no equestrian trails
Thanks! Your answer is awaiting moderation.