Top performance - Vroom Funderingstechnieken
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January 22, 2015

Top performance

On January 15, 2015 our machinist Ronald Pronk has set a world record! Together with a group of pioneers, he climbed the Kilimanjaro within a record time of 31 hours and 25 minutes. Ronald was part of ‘Iceman’ Wim Hof’s group.
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Outsiders did not believe in the group’s attempt to set a world record. An average of 46% of the climbers manages to reach the top of the Kilimanjaro within 5 until 7 days. As the human body reaches a level above 3,000 m, there is an increasing significant risk of altitude sickness. Doctors believed it to be impossible anyway, but Hof has proven that altitude sickness can be managed in a safe manner by providing the body with more oxygen through special breathing techniques. Moreover, the high oxygen value in the blood kept the participants’ muscles from a lactic acid build-up, allowing the group to travel 78 km with an altitude increase of 4,000 m within 2,5 days (back and forth).


Wim Hof and the pioneers’ group started out on January 14 at an altitude of 1,800 m. From that point, they walked towards a camp at an altitude of 3,700 m. They stayed here overnight and continued the very early next morning to the top at 5,685 m (Gilman’s Point). Ultimately, of the 19 participants, 15 reached the top.

We are very proud of Ronald. What a fantastic performance!