This 5k is hosted by Adams Homestead and Nature Preserve.

From their site:

Join us for a family friendly 5K run/walk at Adams Homestead and Nature Preserve.

All proceeds from this event will benefit Sonny Acres Live animal working farm.

The cost is $30.00 per participant (16 and older) or $50.00 per family (2 adults and any kids under 16 years old).
Same day registration will start at 9:00 a.m. and the Dash will start at 10:00 a.m.

Come dressed as your favorite barnyard animal or in your best farm attire!

Everyone is welcome to come and meet the residents on the homestead site. Great day for all ages.

https://secure.getmeregistered.com/get_information.php?event_id=141070