This race is a gem! It takes you on a tour of the extensive system of nature preserves in The Cleveland Metroparks, unofficially called the Emerald Necklace. The course meanders south on the all-purpose trail starting from Scenic Park Picnic Area in Rocky River Reservation, through Mill Stream Run, and ending at Oak Grove Picnic Area in Brecksville Reservation.  There are plenty of places to meet your crew at the 5 aid stations along the route of this exciting point to point 50K. If you are looking for a 50K PR or maybe a first ultra-marathon, then you have found your race.  Green Jewel also features a 2 person relay with an exchange point at Wallace Lake.