Ran the Martha's Vineyard 20 Mile over the weekend. Didn't notice anything off along the way, but my last mile was close to 1 minute slow. Asking around, those with GPS on their wrists said the total race was 20 miles exactly. Does anyone know anything more about how far off the miles were?
The website says that the race was measured by Timex GPS, which is unfortunate. Besides that, though, great race- nicely organized, great post-race food, nice giveaways, and good bag service before and after the race. Would run again in a heartbeat, but just trying to figure out how accurate the mile markers were.