About Us

We are a highly professional organizing team and have been running in extreme races ourselves for more then 20 years. Moreover, we have a proven track-record in organizing several events.

The experience that we have gained around the world by participating in, and organizing such races, enables us to stage a well prepared event and cater to our competitors' every possible need.

Our professional multi-lingual team will be accompanied by very motivated and experienced volunteers as well as a local team of experts in organizing outdoor events in remote areas.

Our higly regarded medical team will provide you with all medical treatments that you might need required during the race week.

Please find detailed profiles of the team members at "About Us" at the individual races.

Stefan Betzelt / Founder and General Manager of GlobalLimits

Stefan was born and lives in Wiesbaden/Germany. He founded GlobalLimits in 2012. Stefan has a wealth of extreme racing experience, having participated in many of the most gruelling ultra races, such as Marathon des Sables, Les Foulees de la Soie, Himalayan 100Mile Stage Race, Racing the Planet Namibia and Desert Oman Raid. He also participated in about 20 city-marathons (PB 2:46) and successsfully climbed the Kilimanjaro and the Mount Aconcagua.

Stefan has visited more than 70 countries and learnt a great deal about different cultures and people. He now makes use of this experience to select outstanding and unique locations for the GlobalLimits races.

Stefan has worked as a managing director for some of the leading global financial institutions before he retired in 2004 to become a self employed financial and personnel consultant.

Stefan is also a member of the Curatoship of the Institute of Sports Medicine in Frankfurt/Germany.

Jeremy Joslin, MD, Syracuse/USA - Chief Medical Advisor

Jeremy is a board-certified emergency physician with experience and training in the wide spectrum of prehospital medicine from austere wilderness medical support to urban EMS & Disaster response. As the director of the Wilderness & Expedition Medicine program at the State University of New York, Upstate Medical University, he trains other emergency physicians to provide operational medical support in wilderness & expedition settings while he maintains a research focus in endurance and heat-related illnesses. 

He has worked expeditions and events in remote Utah, the Sahara Desert, the Gobi Desert, and the Amazon jungle; and provides ongoing event medical direction for local & national endurance races, as well as other mass-gatherings and events.