Are you too lazy for a marathon but too much of a legend for a half marathon?The 2/3 Marathon is 17.5 miles (70 laps) around a track. The race is over when the winner crosses the finish line. Everyone else loses. Register Now 17.5 Miles. 70 Laps. Very Cold. 17.5 Miles. 70 Laps. Very Cold. 17.5 Miles. 70 Laps. Very Cold.