The marathon has an official distance of 42.195 km and takes an average of around four and a half hours for a runner to complete. This is equal to a pace of 6:23 min/km. Refer to the table further down this page if you are interested in any of the marathon courses.

Effect of course on marathon completion time. Slower courses have a greater time estimates of $\beta_\text{course}$. To control for the difference between walkers and runners, participants who took more than 5 hours were discarded from the dataset when building this model. Hover over the bars or standard error bars for more information.

Distribution of marathon completion times. Unlike the previous plot, this plot displays raw data. All participants are included here regardless of how many marathons they have run or how long they took to complete it.

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