Long distance sport events involve pacing, that can be defined as the distribution of energy reserves and speed through the whole race.

The main pacing strategies are:

  • Negative pacing, with slow start and gradual speed increase.
  • Positive pacing, with fast start and gradual speed decrease.
  • Even pacing, without changes of speed.
  • Variable pacing, with many speed changes.

Appropriate pacing is directly related with the chance of a successful finish, less chance of injuries and an increase of the pleasure that recreational runners get from participation.

In general, negative and even pacing seem to be the best strategies for performance, although in the marathon the positive pacing is the most widely used regardless of age, sex and finish times. The fast pace at early stages may be related to “pre-race enthusiasm” and absence of fatigue. At the latter stages of the long effort the pace is affected by physiological factors such as high amounts of fatigue, inflammation and muscle damage.


The study

A study has tried to elucidate how runners pace according to their age, and if pacing is different when running a half marathon or a full marathon. For this purpose, they chose the runners of the 2017 Vienna Marathon (marathon, n = 6081; half-marathon, n = 11,384) and studied the speed for the whole race and in 5 different race sections.


The results

The main findings were:

  • Average speed decreased throughout all race in both the marathon and half-marathon and among all age groups.
  • Half-marathon runners used to run at a more even pace than marathoners. Marathon runners used to slow more probably because of glycogen depletion after hitting the wall (in the 32-35k).
  • Men younger than 30 years of age changed speed more often.Younger runners may lack the experience to pace evenly, missing the “marathon template” that more experienced runners may have intrinsic in the brain.

There were some limitations too. Data was obtained from a single race, older than 60 years of age athletes were included in a unique group, and lack of knowledge about running experience and training levels for individuals.



  • Long distance runners could benefit from adopting a different pacing strategy to maximize the opportunity of achieving better race times.
  • A negative or even pacing could simultaneously improve fitness while avoiding injuries and provide more satisfaction after completion.


In our next post we will see the differences between men and women.

Thanks for reading.



Age Differences in Pacing in Endurance Running: Comparison between Marathon and Half-Marathon Men and Women.

Cuk I, Nikolaidis PT, Markovic S, Knechtle B.

Medicina (Kaunas). 2019 Aug 14;55(8). pii: E479. doi: 10.3390/medicina55080479.

Leave a Reply

Your email address will not be published. Required fields are marked *