Boston Marathon

Most runners qualify by meeting BAA time standards for their age group and gender, then apply during a five-day registration window in September 2026. Acceptance is based on how much you beat your qualifying standard, not when you submit. Charity bibs through the Bank of America Official Charity Program are the main alternative, requiring significant fundraising commitments.

The race has a six-hour finish requirement. Official timing ceases after six hours from your wave start, and the course cutoff is 5:30 PM on race day.

Yes. Boston is a USATF-certified course and finishing times are accepted as qualifying times for future Boston Marathon entries, subject to BAA standards. Note that the course is ineligible for World Athletics world records due to its net-downhill, point-to-point layout.

The course gains 829 feet and loses 1,239 feet over 26.2 miles, for a net drop of about 460 feet. The first mile drops steeply, the middle miles roll gently downhill, and the Newton Hills, ending at Heartbreak Hill at mile 20, deliver four sustained climbs right when fatigue peaks. Running even effort in the first half is the key to surviving the second.

Temperatures typically start in the low 40s in Hopkinton and climb to the mid-60s by midday. Conditions vary significantly year to year. Wind direction has an outsized effect: a western tailwind can produce fast times, while an easterly headwind off the Atlantic makes the final miles very difficult.

The 2026 race had 29,025 finishers, with an organizer cap of 30,000 official entrants. Roughly 24,000 spots go to time qualifiers, with the remaining approximately 6,000 allocated to charity runners, invited professionals, and other invitational entrants.

In 2026, 53.5% of finishers ran a BQ-standard time. This figure is high compared to most marathons because a qualifying standard is required for the majority of the field, creating a self-selected pool of faster runners.