A total of 13 out of 5,000 enthusiasts ran in the dark on behalf of the IXTENT team in the framework of the Světluška (Firefly) project to help the visually impaired. This charity run took place after nine o’clock on the evening of 11 April 2019, in temperatures very close to zero … the frozen runners were warmed at the starting line by a group of Tokhi drummers, the Groove Army. The event had an unmistakable atmosphere and when the runners looked back in the darkened park, they would see a huge swarm of “fireflies” – runners with torches on their headbands – all with the common desire to help people with visual disabilities.