The Kerri “D” Sour Apple Running Festival takes place in Deerfield Park in Smithfield, RI. There is a half marathon and 5k. Race day kicks off with chipped timing. The half marathon has many hills, but the last 2 miles are downhill or flat. The 5k also features some hills, also ending in a downhill finish. There are 7 water stations on the half course and a water stop on the 5k. Additionally, 2 porta-potties are strategically placed along the half marathon route.