I was part of the team of volunteers that implemented the scoring for the race. We did DQ ten runners that did not make it to the summit, but still came through the finish line. You can see the list of DQ runners in the "Almost Live In-Progress" results. We do check for this throughout the day, but we don't always know immediately if somebody has not made it to the summit. It's dependent on having access to the summit times, which requires internet connectivity at the summit. There were some periods during the day when the summit had lost their internet connectivity.