XTERRA Eureka Springs XTERRA Eureka Springs is one of the most challenging races on the XTERRA America Tour and may be raced individually or as a two or three person team. Half mile swim in spring-fed Lake Leatherwood. 14.5 mile bike is two laps consisting of 90% single track comprised of a mix of smooth and technical rocky sections and 10% gravel double track. 5 mile run is all single track comprised of a mix of smooth, technical rocky sections and roots.XTERRA Eureka Springs Sport 1/2 mile swim / 7.25 mile bike / 3.6 mile run XTERRA Eureka Springs Sport race is a new addition to the race weekend and is for those looking to experience XTERRA for the first time or have the same XTERRA fun on a less demanding course. XTERRA Eureka Springs Sport does not award XTERRA America Tour Series points.