Can Women Outperform Men in Ultramarathons?
By Jason Koop,
Head Coach of CTS Ultrarunning
In December, a rather provocative e-mail came through my imbox and perked my interest. The kind of e-mail that makes your eyes bulge like saucers, sweat a bit under your collar and feel guilty for having read the contents within. I’m pretty sure my heart rate spiked into the 150’s and the resulting training effect was equivalent to a fast 5k. As I opened the attachment, my jaw dropped. I couldn’t look away from the images before my eyes. It was mesmerizing, seductive and confusing all at the same time.
OK, pull your collective heads out of the gutter. The title of the e-mail I was referring to was ‘Women as Fast as Men in Ultras- An Exclusive Study’ and the salacious content within was chock full of charts, graphs and figures explaining race trends in the ultramarathon world. So, I dove right in analyzed the data for myself, put my coaching hat on and got the research team on the phone for a quick chat.
How we got here
Before I dive into the study itself, a bit of background is in order. The report was produced by RunRepeat, a website that reviews and sells athletic shoes. As part of their marketing efforts, they analyze data and trends, then publish reports on those trends in an effort to drive traffic to their website. Oftentimes, the reports have some eye-grabbing headline such as ‘Aussies have never been slower’ (sorry, mate) or ‘Dog Race Database’ (who doesn’t love puppies?). There are even some, shall we say, more attention grabbing titles that would even cause Dr. Ruth to blush… I can’t blame them. As they say, sex sells and if you are going to drive web traffic with normally boring-as-heck data, you gotta use all the tools you have! In any case, normally I would take a report like this with a big, cheeky grain of salt and file it in the ‘interesting but not reliable’ category. However, all of the intentionally stimulating headlines aside, the ‘state of the sport’ articles produced by RunRepeat in the running and ultrarunning space warrant some attention.
To get to brass tacks, the research team collaborated with the International Ultrarunning Association (IAU) and analyzed 23 years of race data consisting of 5,010,730 results from 15,451 ultra running events. You read that right! That’s a lot of ultramarathon race data to chew through. While the IAU data certainly does not encompass all of the ultrarunning events worldwide, they feel like they captured about 85% of all of the ultrarunning events from the last 23 years. It’s enormous data set, certainly unique in its worldwide comprehensiveness and one worthy of pulling some trends from.
Many of these trends are quite fascinating. But the top-line, men vs. women is the attention grabber and worth some discussion.
With that as a background, let’s dive into the title headline.
Women are faster than men in distances over 195 miles
According to data compiled by Ultrarunning Magazine, every year around 30 ultramarathons in North America will be won outright by women. Those performances are outstanding and tend to be more likely the longer the distance of the event. For example, earlier this year, Maggie Guterl outright won Big Dog’s Backyard Ultra in an astonishing 250-mile performance, a result which in many people’s minds was the singular best female performance of all of 2019. Similarly, in 2017 Courtney Dauwalter outright won the Moab 240, crushing the entire field by an incredible 9 hours. And now comes this statistical analysis indicating that after a certain distance (195 miles to be exact) women as a whole will outperform men.
So, is there a distance where women will start outperforming men? The short answer is no, but that’s a confusing response given the aforementioned examples. Once again, a little history is in order…
Women outperforming men in ultrarunning has been theorized since at least the mid 90’s. In part, the theory has been fueled by studies like this 1997 study  co-authored by the esteemed Tim Noakes that compared 56k and 90k race times between similarly matched men and women and found that the women fatigued less as the distance increased. When studies and performances like this come to light, they get picked up by mainstream media and the following run of show ensues:
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First, the study is published or performance happens. No one really outside of the small ultrarunning world really hears about it. Shortly thereafter, a lay article is written where they interview some performance expert. That expert opines on how it’s possible that women will eventually outperform men. That argument usually has four themes:
- Women’s hormones are more conducive to ultradistance events
- The fact that women metabolize fat better gives them an advantage
- Women are tougher
- Here are other races that have been won by women outright
All of these have some validity to them, by the way. Finally, everyone jumps on the bandwagon and forgets that very, very few races are won outright by women (the 30 races won by women referenced earlier represent less than 1.5% of the total races in north America. Though, it should be noted that Ultrarunning Magazine only reports this for races with over 50 competitors). The release of the RunRepeat data set will follow a similar run of show (oops, already did).
What the data actually means
What the data actually means is that after 195 miles the average pace of all women competing is better than the average pace of all the men competing. Why is this the case? Math and demographics (not physiology and toughness). In any athletic user group, the early adopters are also higher performers. Take the people who pioneered skateboarding, or adventure racing as an example. Those early adopters were good at the sport they were trying to push the boundaries. As a sport becomes more and more popular, the number of non-elites grows much faster than the number of elites. Therefore, even though the best times and performances improve (by way of a course or world record) the average times get worse. Ultrarunning is no different.
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As more and more people enter into ultrarunning, the average times get slower (as the RunRepeat study also points out). As more and more women enter into longer distances, the average pace will get slower and will likely do so in a quick fashion (in the most oxymoronic sentence of this particular post) because the denominator in the equation (the total number of female runners) is small. The research team at RunRepeat asserted this on my call with them. And, the data that they have previously produced in the marathon distance backs this up. When you add runners to the group, the average times get slower.
What this means for the average ultrarunner
As much as I love a hero story, and as excited as I get when women win races outright (they are phenomenal performances), don’t buy into the hype. Ten years from now, we’ll be having this whole conversation all over again at a longer distance. In the 90’s it was 100k where women should outperform men. In the 2000s, we bumped that up to 100 miles. Now it’s 195 miles. Maybe there actually is a distance at which women consistently outperform men, but I doubt it. Until then, women will occasionally win ultramarathons outright. And those are always amazing performances (yeah, I’m repeating myself here make the point). But, before we all jump on the bandwagon, we should take a pause and remember the context.
Commence egg throwing. @jasonkoop is my Twitter handle.
Comments 35
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I’m a 60 something woman and was there when women weren’t even allowed to run longer than 800m as school kids. Nor marathons at all. I ran my first back in 198 I’ve seen all the misgynoistic excuses to exclude women from event. Having to run my little legs off to reach the first check point doesn’t do a lot for your overall race performance, I can vouch for the fact. That was the way this particular event organiser made sure women weren’t on the start line. He finally, passed on and the event now has a much better CP cut off for women.
Women have only just begun running long events. Lets come back in 100 years and see how they are doing.
It’s great to see women win races out right, someone has to win. If the men dont turn up, please dont put down the women who do, and then win. Its like saying that because KIpchoge didnt turn up for The London, the winner who did turn up isn’t worth bothering with.
Remember without the ones behind, there is no winner.
It’s always interesting to me that people thing saying “women are great too, some women are athletic too” makes it ok to then **** on women and follow it up with something ignorantly misogynistic. It’s like saying “no offense” before saying something offensive, and thinking that excuses the offensive comment. It doesn’t, it makes it worse. Pandering and condescending to women doesn’t make any of this better, it makes it worse.
Even the sources in this opinion piece shows the author is wrong. I’m going to believe in the evidence and science disproving this guy’s opinion rather than blindly believe someone whose own sources go against his opinion. There are many biological reasons women make better endurance runners, get over it.
No they don’t get over it
No theyre not
get over it
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Simply put, RunRepeat was irresponsible in drawing the conclusion they did from the data they had. “The women who chose to run 195+ in our data were faster than the men who chose to run 195+ in our data” is a long, long leap from “women are faster than men in 195+ distances.”
If you want to know which gender is faster at a given distance, compare the fastest times across genders at that distance. That’s done here for multiple distances (alongside RunRepeat’s “data”): https://postimg.cc/S2Tbgk0s
Is it possible that the trend reverses above 195? Yes, I’ll grant that it is. To those of you who are prematurely explaining why that might be though, please make sure your explanations fit elite runners’ results.
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I think this concept started in the 1990s, mostly due to Ann Trason’s successes. But Trason was a once in a generation athlete in an emerging sport. Once the population of elite participation got significant, it turns out that ultra distances are just like everything else. From 100 meters to 100 miles, men’s best performances are just about 10% faster than women’s best performances.
That 10 percent look small but are actually a HUGE difference. Just like with cars you need exponentially more performance to achieve even gain fractions of seconds. Especially in sprinting. That is why testosterone is an illegal drug in those sports. It is THAT powerful.
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To add to the results, Jodi Semonell from Omaha, NE just won Across the Decade 200 mile!… and smiled the whole way. She’s a beast! 💪💪💪
Not tossing eggs here! Gotta lot of hills this weekend. I’ll put that delightful protein to a better use!
Thanks, again, for all you do in an attempt to make us smart!
Always a good read Jason Koop