The Long Beach Sprint Nationals. The 2015 ARP Long Beach Sprint Nationals Presented by Nick Rose Insurance will be held on August 8 & 9 at famed Long Beach Marine Stadium. The annual August event brings in the best flatbottom, V bottom, jet and tunnel boat racers from across the country. Over 10,000 fans attend the two day race that culminates with the APBA (American Power Boat Association) National Championships. This years event features 14 classes of powerboats looking to take claim to bragging rights at the race that dates back to 1946.