Boston Marathon 2026: Everything to Know Before Race Day
The 130th Boston Marathon runs Monday, April 20, 2026, with its biggest structural change in years: six waves instead of four, accommodating 30,000 runners across the iconic 26.2-mile route from Hopkinton to Copley Square.
Three defending champions return to the start line, and the elite field is one of the deepest in recent memory.
Whether you're racing, spectating, or tracking from home, here's everything you need before the gun goes off.
Key Takeaways
- Date: Monday, April 20, 2026 (Patriots Day). Start: Hopkinton. Finish: Boylston Street at Copley Square.
- New for 2026: 6 waves replace the previous 4, managing the flow of 30,000 participants more effectively.
- Three defending champions on the start line: men's, women's, and wheelchair divisions.
- Elite to watch: Alphonce Felix Simbu (2025 World Marathon Champion), Emily Sisson and Fiona O'Keeffe in the women's field.
- Runner's Expo: April 17-19 at Hynes Convention Center. Fan Fest at City Hall Plaza on race day.
What's New in 2026: Six Waves
The Boston Athletic Association (BAA) restructured the wave system for this edition.
The 2026 race moves to 6 waves, up from 4 in previous years.
The change responds to the growth in the participant field and aims to reduce congestion at the Hopkinton start and across the early miles of the course.
Elite women and men still start separately, ahead of the qualified-by-time waves.
The course itself is unchanged: 26.2 miles from Hopkinton to Boston, with the famous Heartbreak Hills between miles 16 and 21, and the finish on Boylston Street.
Spring conditions in the Boston area on Patriots Day can vary significantly — temperature and wind direction have a major impact on elite times, and the forecast will be closely watched in the days leading up to April 20.
Men's Elite Field: Simbu Is the Name to Watch
Tanzania's Alphonce Felix Simbu arrives in Boston as the reigning World Marathon Champion, following his gold medal at the 2025 World Championships.
He's the top name in the men's field according to pre-race analysis of the 2026 edition.
Simbu is known for his tactical racing and ability to accelerate over the final 5 miles — a crucial quality on a course where the Newton hills can break legs that started too aggressively.
The defending men's champion returns to defend his title, which sets up a potential rivalry narrative against the world champ.
The men's field also includes several African runners with sub-2:06 qualifiers, pointing toward a tactical group race rather than a solo breakaway attempt — the kind of racing where how elite runners manage heart rate versus pace in the opening miles often decides who has legs left on Boylston Street.
Women's Elite Field: Sisson and O'Keeffe Leading the American Charge
The defending women's champion is back to defend her title, competing in a moment when American women's marathon running is producing some of its best performances in decades.
Emily Sisson is among the top favorites.
She holds one of the fastest American road marathon times and has shown she can perform on technical, hilly courses like Boston.
Fiona O'Keeffe is the other American name drawing serious attention heading into race day.
Her progression over the past 18 months on the marathon makes her a genuine title contender, not just a podium hopeful.
The women's race looks wide open, with several athletes capable of targeting sub-2:20 if the first half of the course delivers favorable conditions.
Wheelchair and Para-Athletics Divisions
The Boston Marathon is one of the few races in the world where the wheelchair competition gets genuine visibility alongside the running events.
The defending wheelchair champions in both men's and women's divisions are returning to defend their titles.
The wheelchair races start ahead of the elite runners, making the early miles of the course particularly exciting for spectators positioned along the first sections of the route.
Top handcyclists regularly exceed 60 km/h on the course's descents, especially through Newton Lower Falls — it's a completely different kind of race to watch.
Runner's Expo, Fan Fest, and How to Follow the Race
If you're racing or supporting a runner, the Expo is a key stop.
The official Boston Marathon Expo runs Friday, April 17 through Sunday, April 19 at the Hynes Convention Center in Back Bay.
That's where participants pick up their bibs, official race shirt, and runner's kit.
The Expo also features dozens of running brands and gear exhibitors — worth a visit even if you're not racing, especially for gear heading into the spring race season.
The Fan Fest is at City Hall Plaza on race day, April 20.
It's the central gathering point for spectators, with live coverage on big screens, activations, and the kind of energy that makes race day in Boston feel like a city-wide celebration.
To track runners from home: the official coverage and live GPS tracking are available through the BAA's app and official broadcast partners.
Full Week Timeline
- Thursday, April 16: official start of Marathon Week with community events and early activations.
- Friday, April 17 to Sunday, April 19: Runner's Expo at Hynes Convention Center (bib pickup required before race day).
- Monday, April 20: race day. Elite women's and men's starts early in the morning. Mass waves through mid-morning. Fan Fest at City Hall Plaza all day.
The Boston Marathon is one of the six Abbott World Marathon Majors, alongside Tokyo, London, Berlin, Chicago, and New York.
Finishing Boston means finishing one of the most demanding courses on the Major circuit — Heartbreak Hills punish anyone who starts too fast, and the crowd energy through Wellesley and Newton is something runners consistently describe as the highlight of their racing career.