Things that could get you DQ’d from a race

Follow race regulations and policies or face being removed and, in some cases, banned from future events

Runner’s zip code, race time, bib number and T-shirt all match

“It’s probably the craziest thing I’m ever going to experience,” 28-year-old Billy Covert says.

This Craigslist ad shows the lengths runners go to just to get Boston glory

An unusual Craigslist post, which involves a race number switch, surfaced online on April 16 ahead of Monday’s Boston Marathon.