BattleFrog Series is nothing if not ambitious; scaling an event from 3-6 events is a big deal, and moving into a new state is fraught with difficulty on levels of magnitude to putting on an event in your home market - ask any race company in (or out) of business now. What BFS did is beyond definition, and beyond reckless for any other event to even attempt. The sport is littered with the carcasses of races that tried, yet this is not a homage to their failures, it's a nod to the audacity of BattleFrog's ownership and executive management; they have a plan of action that would make any CPA tremble.
All of these events are big on fun, and in descending order of difficulty. WIPEOUTRUN is the easiest, all the way down to Spartan Race Sprint as the hardest "beginner-friendly" races. If you're looking for a good reason to get muddy and experience an actual mud run/obstacle course race with guys and gals, our best suggestion is to start with Warrior Dash. Yeah, we know you're the adventurous type - but recommend getting at least one OCR under your belt before you move up to Spartan Race Sprint; even the short distance is pretty darn difficult with mandatory obstacle completion (the only one on this list that requires it)!