I have a house about 15mins from there, recently the Slovenian government have invested a lot in upgrading the jump/fly hills and they now have now the largest ski flying jump in the world so expect this record to be broken.
I watched a world cup event there a couple of years ago but they were limited to one of the smaller hills due to the building work going on, even watch 115m long jumps was might impressive so seeing some one fly 0.25km is going to be spectacular
Down is quicker than up, this video is good at showing how steep it all is
https://www.youtube.com/watch?v=Y0ZvI0fNFhU