Martin Hoffman, professor emeritus in the Department of Physical Medicine and Rehabilitation at the University of California, Davis, has overseen several studies on this topic, and in some cases, up to 6 out of 10 runners experience nausea during an ultramarathon. As such, it’s a bit foolhardy to throw out a single estimate of nausea and think that it applies to every ultrarunning scenario.Ĭaveats aside, some of the relevant data tells us that nausea incidence clearly increases with race duration. In addition, the occurrence of nausea is likely to vary with temperature and humidity, elevation, and the length of a race.
Just How Common Is Nausea?īeyond the anecdotes, what exactly do we know about the prevalence of nausea in ultrarunners? Before we get to some data on that question, it’s important to recognize that surveys used to gather this information quantify nausea differently. Let’s take a look at what the research says about the possible culprits as well as some of the strategies you can try to deal with this troublesome symptom. Still, we do have some clues as to why the prevalence of nausea and vomiting is up to 2-3 times more common in these races than much shorter distances. The reason so many ultrarunners get stricken with nausea is undoubtedly multi-faceted, and to be honest, there is not a cut-and-dry singular explanation. For some, it’s an unlucky one-off event, but for others, recurrent nausea consistently mars their ability to perform up to their expectations. Indeed, practically every ultrarunner has their own tale of yakking on the side of a trail or into an aid station trashcan. Perhaps none of these potential problems, however, are as prevalent and impactful during ultramarathons as nausea and vomiting. Blisters, chafing, cramps, muscle strains, knee pain, heat illnesses, and altitude sickness are just a handful of the possibilities. The list of issues and injuries that an ultrarunner can face while racing is lengthy. Heading out the door? Read this article on the new Outside+ app available now on iOS devices for members!
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