Corby South incorporates trails and bridges built during the Great Depression with trails that are just a couple years old. This mildly hilly and sometimes technical set of trails is the perfect weekday evening loop. Because the older main trails cross the loop trails multiple times, the course can be confusing to first timers. The full loop including some of the over-grown grass sections is between 4.5 - 5 miles long. Without the grass sections it is 4 - 4.5 miles and is easily linked with Corby North on the other side of the parkway.