Let me first start with what is on the site:
What is the SOS 50? 50 Shades of Sore (SOS 50) is a self-supported (fatass) trail ultramarathon with 50 kilometer and 50 mile options. The event takes place almost entirely on the Horse-shoe Trail, through French Creek State Park, Warwick County Park, along with surrounding gamelands, natural preserves, and connecting forest and prairie lands. The trail is pristine, beautiful, varied, occasionally rugged, and amazingly secluded for southeastern Pennsylvania. 50 Shades of Sore is organized by Philly's friendliest trail running group, Misery Loves Company. We welcome trail runners of all abilities to join our ranks.

Okay, so what did I think of this race. Absolutely had a great time. It was my first ultra and I couldn't think of a better crew to share the experience with. The elevation was brutal and the distance was long. I went the entire time without music and that was by choice. Also, because I had great people to run with. This particular race offered a 50K and 50M. I knew I was not ready for the 50M so I signed up for the 50K. I traveled up from Northern VA to French Creek State Park, PA. Easy location to get to.

Prep for race: Plan for anything so be well equipped. Make sure you have plenty of fluids on you and necessary supplements.