By Lauren HollandUpdated November 2026
The first woman to run in the Boston Marathon was Roberta “Bobbi” Gibb, who ran the race unofficially in 1966 without a bib, starting from the crowd and finishing in about 3 hours and 21 minutes. Her run came a year before Kathrine Switzer entered the race with a registration number. Gibb hid in the bushes near the start, then joined the field once the gun went off, and she was the first woman to complete the course.
Why Bobbi Gibb’s 1966 Run Mattered
At the time, the Boston Athletic Association did not allow women to enter the marathon. Organizers and many runners believed women were not physically able to cover 26.2 miles, and women’s races at that distance did not exist in most of the country. Gibb had already run long distances on her own and wanted to test herself against the best marathon course in the world. Her decision to run unregistered was a direct response to being shut out.
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Her finish time was recognized by the press and by many runners, but the race did not officially credit her with a place in the results at the time. The story is an important part of the history of the first woman to run a marathon in Boston, and it shows how much the sport’s rules were shaped by assumptions rather than evidence.
The Factors Behind the Race’s Rules
Several things kept women out of the Boston field before 1972. Race organizers relied on a men-only entry policy, and there was little women’s competitive running infrastructure to draw on. Medical opinion of the era also held that long-distance running was harmful to women, a belief that later research did not support. Changes came slowly, and each step forward was contested.
- Entry rules were written for men only, with no formal provision for women.
- Few women’s road races existed at the marathon distance in the 1960s.
- Public and medical assumptions about women’s endurance were widely accepted.
- Gibb’s unofficial finish and Switzer’s 1967 entry put pressure on the rules.
Switzer ran in 1967 with her bib number, and was pushed by an official during the race. Her experience drew national attention and helped build momentum for women’s inclusion. Official women’s entry at Boston came in 1972, when the race opened its field to women. For a deeper look, Four Week 5K Training Plan: Run Your First 5K in 28 Days covers this in detail.
What Runners Can Learn From Gibb’s Story
Gibb’s run offers a useful lesson for any runner dealing with rules that seem arbitrary. If you want to test your limits, understand how the event is organized and what official options exist before you decide to go unregistered. Unofficial participation can create safety risks, such as no aid station support, no timing chip, and no medical coverage on the course.
- Read the current entry requirements for any race you want to join, including qualifying standards and bib transfer rules.
- If you are denied entry, document your training and results so you can make a clear case to the organizers.
- Look for alternative races with open entry, such as local marathons, and build toward a qualifying time.
- Consult a physician before starting a marathon training plan, especially if you have an existing medical condition.
Related questions
Who was the first woman to run a marathon?
Many histories credit Kathrine Switzer as the first woman to run the Boston Marathon with a registered bib in 1967. Earlier, women had run marathon distances in informal and unofficial settings. You can read more in Who Was the First Woman to Run a Marathon? Kathrine Switzer's 1967 Race.
Did Bobbi Gibb officially finish the Boston Marathon?
Gibb completed the course in 1966 but was not officially entered, so her result was not included in the race’s official records at the time. Her finish is widely recognized in race history as a significant achievement.
What was Kathrine Switzer’s time in her first Boston Marathon?
Switzer finished the 1967 race in roughly 4 hours and 20 minutes, according to widely cited accounts. For context on her result, see Kathrine Switzer First Marathon Time: What She Ran in 1967.
How fast was the Boston Marathon winning time in the early years?
Early winning times were slower than today’s, and course conditions and the hilly layout played a large role. You can compare results in First Boston Marathon Winning Time: Records, Course Factors and Results.
Is a first marathon under two hours realistic?
For most runners, a sub-two-hour first marathon is not realistic. A practical look at what beginners can expect is in Can You Run Your First Marathon Under 2 Hours? Realistic Answer.
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About Lauren Holland
Lauren Holland is part of our editorial team and reviews and edits our marathon & half-marathon guides, checking product details against manufacturer specifications and owner feedback.
