Boston Marathon: An Unfair Disadvantage

By September 5, 2017Research
Boston Marathon

New research shows the world’s oldest and most popular marathon course yields slower times.

The Boston Marathon has been ineligible for records since 1990 due to International Association of Athletics Federation’s rules regarding the course’s net elevation loss and point-to-point format, but researchers have now proven what seasoned marathoners already know — the route offers only what could be considered an unfair disadvantage.

In fact, their findings confirm times on the Boston course — the world’s oldest annual and most popular marathon — are typically slower than those on other Abbott World Marathon Majors courses, including London, Berlin, Chicago and New York, courses that are all record-eligible.

The study, led by researcher Philip Maffetone and published by PLOS One, cites race times of the top-10 male and top-10 female finishers of all races in the WMM for the years 2005-2014. London and Berlin were shown to be the first and second fastest courses, respectively, for both men and women, while the top finishing times of men and women at Boston were shown to be typically slower than all other venues.

In 2011, Geoffrey Mutai ran a 2:03:03 winning time at Boston. At the time it was the fastest marathon ever run, but not eligible as a world record due to IAAF rules. However, according to this new study, the high variability of Boston finish times suggests that Mutai’s run may have been an outlier, likely produced by perfect conditions such as a tailwind and optimal temperatures, rather than course topography.

The men’s world record time was broken three years later in Berlin by Dennis Kimetto who ran 2:02:57. Berlin is the second fastest WMM course and Kimetto enjoyed near perfect race-day weather.

Berlin, London and Chicago have a history of the most number of sub-2:05 finish times for men and sub-2:20 times for women, and the most number of world-record times — with Berlin having a much greater history of these finishes. Given this data, researchers concluded that any of these marathon venues could be considered more advantageous than Boston for faster times.

Researchers also established that weather could produce an unfair advantage on any given day on any course, and appears to be a more significant factor impacting marathon performances than course topography.

Excluding weather factors, the relationship between course elevations and finish times does not indicate the Boston route poses an unfair advantage, they said. In fact, times there are on average slower than other WMM venues, with a higher race-to-race variability than the other races.

With both the fastest times for men and women, and the most world record times, the courses in Berlin and London appear to provide the greatest advantage for faster times in WMM venues.

Tom Grilk, chief executive officer of the Boston Athletic Association, welcomed the new research.

“We in Boston applaud both the effort that went into this study and the quality and originality of the analysis that it embodies,” Grilk said. ” It is also worth noting that as a founding member of Abbott World Marathon Majors we are in no way at odds with our partners and frequent collaborators at AbbottWMM.”

In an editorial that accompanied the study, Maffetone and Paul Laursen wrote, “With years of finish-time data, the IAAF appears to have arbitrarily set rules regarding elevation and point-to-point being associated with a performance advantage, rather than use existing scientific data.” And that, “This has led athletes, coaches, scientists and others in the sports community, who have known for years that the Boston Marathon is a relatively slow course due to the uphill segments and the steep downhill grades, to refer to these rules as flawed.”

Authors of the study say rules which pertain to weather — rather than topography —  would be better at eliminating “fast” courses from world-record eligibility, and that rules which pertain to course topography may exclude courses where these features have no significant impact on finish times.

“In light of the evidence from our study, the best marathon performances and world record times, and criteria used across other sporting venues, the IAAF should reconsider the current ruling in the case of the Boston Marathon’s record eligibility,” Maffetone and Laursen conclude in their editorial. Furthermore, the researchers suggest using their new scientific data, unavailable prior to this study, to support such a rule change.

The new PLOS One study is titled “The Boston Marathon versus the World Marathon Majors” by Philip B. Maffetone, Rita Malcata, Ivan Rivera and Paul B. Laursen.

Download the Boston Marathon study press release here.

5 Comments

  • DiGirolamo Phil says:

    Well things are always relative to the “course”!

  • Dave Jewell says:

    In your study are you accounting for rabitts? Boston does not allow pacers. All the others including Tokyo allow and ecourage rabbits to run. The faster times for London, Chicago and Berlin have to include the pacer piece. Even it Boston was allowed the BAA still would not allow pacers.

  • Rob R says:

    It’s also possible athletes are giving MENTALLY sub-optimal efforts. If I knew that my time “wouldn’t count” even if I beat a world record, it might have a subconscious effect on how hard I am willing to push. I am also inclined to agree with @Dave Jewell, regarding the impact a pacer can have.

    Weather, steep sections, and other course conditions definitely have an impact, but let’s not disregard these psychological effects on performance.

  • Elgar Vaivars says:

    I don’t understand how you can even have a world record using different outdoor courses around the world. A fastest time at any particular event, yes!
    Even 100 metre sprint world records are sometimes controversial, and they’re held on certified flat tracks. Cycling hour records are also set at various tracks. High altitude venues are preferred. Is that fair?
    If a world record is needed, maybe a venue could be designated and then used every year at the same time. Of course, being outdoors it will still be subject to weather variability. Climate controlled indoor venue?

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