Sugar Loop Trail is a 8.5 mile lightly trafficked loop trail located near Fort Mill, SC that features a river and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.
dogs on leash
This is actually part of the Anne Springs Close Greenway MTB trails. It is a good trail if you are an intermediate bike rider. It is not really for beginners (I walked 2 of the 3 miles my first time out there).