Activities Sports & Athletics Top 5 Best Large Obstacle Race and Mud Run Series in America Share PINTEREST Email Print Sports & Athletics Extreme Sports Obstacle Races Basics Baseball Basketball Bicycling Billiards Bodybuilding Bowling Boxing Car Racing Cheerleading Cricket Football Golf Gymnastics Ice Hockey Martial Arts Professional Wrestling Skateboarding Skating Paintball Soccer Swimming & Diving Table Tennis Tennis Track & Field Volleyball Other Activities Learn More By Margaret Schlachter Margaret Schlachter is an award-winning obstacle and extreme racing expert, published author, athlete, and training coach. our editorial process Margaret Schlachter Updated March 18, 2017 01 of 06 Top Obstacle Race and Mud Run Series in the USA Getty Images Obstacle Racing, Mud Runs and other non-traditional races are estimated to have over 6 million people participate in them this year in America. Companies are growing from national brands to international brands quickly. Here are the 5 Best Large Race Series in America in alphabetical order. 02 of 06 BattleFrog Race Series BattleFrog Race Series Although they are new on the OCR scene and just entering the water with the big boys, BattleFrog has quickly made its way into being one of the best larger race series in America. With strong ties to the Navy SEALS this race series is a must for both the competitive racer and the weekend warrior. Companies are taking notice of this new company and they have already gained sponsors like Kill Cliff. Elite racers and weekend warriors alike are finding a new race series to seek out in the BattleFrog Race Series. 03 of 06 Rugged Maniac Getty Images Rugged Maniac helped obstacle racing hit the masses after their appearance on the television show Shark Tank. With an investment from Mark Cuban this company which started in 2011 has grown from a regional player to a national player in the obstacle racing and mud run community. With races planned all over the US for 2015 they are a top series to watch and a good investment in looking for a future race for 2015. Each race since Shark Tank has become better and better from most accounts. 04 of 06 Spartan Race Series Getty Images Spartan Race Series has some big names and big money behind it, Reebok, Core Power, and NBC have all partnered with this race company. Spartan was one of the first to make a big splash in the OCR world in 2010 and since them have been growing each year and continuing to be a trend setter in the industry. From their Sprint distance race to the Ultra Beast there is a race for everyone in the Spartan Series. Spartan is a household name in the OCR world for a reason, you know what you are going to get at each race and that is a high quality race. 05 of 06 Tough Mudder Series Getty Images When you walk up to a person on the street and start talking about the sport of OCR and obstacle racing, the most common response is, "like a mudder?" Yes, like a mudder and more specifically a Tough Mudder. Tough Mudder has become iconic with the sport of obstacle racing and mud runs. People know the sport as mudders and that is due to Tough Mudder. It remains the largest series in America and has people jumping off the desk chair and into the mud each weekend throughout the US and beyond. Tough Mudder has built themselves into a must-do experience for our generation. 06 of 06 Warrior Dash Series Getty Images Warrior Dash has been around since 2009. It is the world's largest obstacle race series and offers races in every part of the US and beyond. While many write it off as too easy it is the perfect entry event to obstacle racing. Their races put fun and experience before brutal obstacles and are a great option for those looking to enter the OCR world or to bring along a family member for their first race. Warrior Dashes are known for the festival and fun surrounding the event and participants can expect a great experience time after time.