aside from the main marathon event, several races occur during the weekend of the marathon, including a half marathon, two to five person marathon relay, 5k race, and "kids marathon." all races except for the "kids marathon" and 5k utilize the same route and starting time as the marathon. attendance and popularity of the events has risen greatly since the 2009 revival. the 2012 race had the largest field in the history of the race. registration for 2012 closed with roughly 25,000 participants between all races, with 6,000 entrants in the full marathon, 13,000 entrants in the half marathon, and 800 teams in the marathon relay, with the remaining entrants distributed in the 5k. additionally, an estimated 60,000 spectators lined the course, and 4,000 volunteers provided assistance. 2012 also marked the earliest sellout in the race's history with all events except the 5k selling out on or before march 6, 2012.