The NN Runner Supporter (Dutch: Hardloopsupporter) allows friends, family and colleagues to send in a video for their marathon hero. These videos are shown on four large screens at the 34 kilometre mark, where many runners encounter the so-called ‘Man with the Hammer’. This gives them that much-needed last push towards the finish line. The emotions evoked by the videos during the 2019 NN Marathon Rotterdam were captured in a separate 90-second video. This video was broadcast the very same evening on Dutch TV channel NPO 1, during the commercial breaks in the NOS Studio Sport programmes.