The Badwater 135 is a 135-mile (217km) invitational road ultra held each July, starting at Badwater Basin in Death Valley at 282 feet below sea level and finishing at Whitney Portal at 8,360 feet elevation. The course runs entirely on paved roads through Death Valley in temperatures that regularly exceed 120 degrees Fahrenheit. The invitation-only field is capped at approximately 100 athletes with a 48-hour time limit.