Klaus Ohlmann is a four-time world gliding champion and, with over 60 world records, the most successful glider pilot of all time. Longest glider flight of all time, as well as the fastest ever achieved average speed of 307 km/h during a 500 km out and return flight stands for more than a decade in the Guinness Book of Records. Among these is the record for a free distance flight with up to 3 turn-points by flying 3,009 km from Chapelco Airport at San Martín de los Andes (Argentina) in a Schempp-Hirth Nimbus 4 DM on 21 January 2003. He also broke Hans-Werner Grosse's free distance record, which had lasted over 30 years, on 9 January 2003 by a flight of 2,247.6 km in a Schempp-Hirth Nimbus 4 DM at El Calafate in Argentina.
On 1 February 2014, he became the first-ever glider pilot to fly over Mount Everest.