The Myrtle Beach Triathlon Club serves up a challenging trail run at the HULK—the Horry County Bike and Run Park. The nickname comes from the Universal Studio’s Hulk rollercoaster and is known for its constantly twisting and turning trail. Sign up for a 10k, 20k or 50k and let the trail take you through elevation changes, waterway views, grassy meadows and more! Horry County Bike & Run Park, Frontage Road B-2. Saturday, 7 a.m. $25–$80, www.mbtriclub.org