Brazos Bend 50 is a UTMB World Series qualifier event.  There are 5-course options for 900 lucky registrants: 50-mile, 50km, 25km, 10km, and 5km. The flat course through Brazos Bend State Park has a variety of terrain between hard crushed rock, soft trails under the canopy, and horse trails. Only one hill is 10 feet,…