On Sunday, September 3, 2017 at 8:23:47 PM UTC+3, Tom Kelley #711 wrote:
GLIDER ALTITUDE: 52004 ft

Through the wonders of technology, I was watching their instruments live and commenting on twitter from a train between Tallinn, Estonia and St Petersburg, Russia.

They were in 300 - 500 FPM lift most of the time above 48000 ft and I think could have easily gone a lot higher. I'm sure they'll smash this new record pretty soon.