Flying from the normal Eiger exit to Grindelwald Camping.
Arm strength seems to be the limiting factor here. After 2+ minutes it was very difficult to maintain max glide. Someone with the same suit and stronger arms should be able to arrive higher. I will have to drink more milk.
At about 2000m vertical and about 5.4km distance, the necessary total glide ratio is 2.7:1 when taking into account the freefall start and the pull altitude, so in reality you have to fly at better than 2.7:1 for more than 5km.