With record numbers of runners lacing up to run marathons, more of them will face the infamous experience of “hitting the wall.” Hitting the wall is the phenomenon where runners experience a sudden onset of debilitating fatigue, difficulty keeping pace, and often, a shift away from their goal pace towards surviving until the finish line.

The wall is brought on by a depletion of the body’s energy stores after prolonged physical exertion, often around the 34-kilometre mark of the marathon. While nutrition and pacing may prevent the wall, about 50 per cent of recreational marathon runners, especially novice ones, report being acquainted with this running “rite of passage.”

Even if runners avoid the wall, most runners will experience fatigue and discomfort over the course of a marathon. The fatigue and suffering can feel like an unfair payoff after months of training.

I have run 10 marathons and during some, I hit the wall. As an exercise psychology researcher, I was disappointed that I didn’t cope better when I first encountered the wall. My initial response involved typical negative thoughts (for example, I will never finish), emotions (despair, panic) and a desire to quit. Like many other runners do, I tried to distract myself, deny what was happening and suppress my negative thoughts and emotions.

This didn’t work well and research explains why. Such coping strategies can use up cognitive resources,........

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