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.

Stefan Betzelt/Germany - 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 85 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.

Daniel Meyes, Zürich/Switzerland - Course Director

Daniel is a passionated multisport athletes coming from Zürich, who loves to be in nature. When traveling he tries to combine his activities with all kind of outdoor sports such as running, mountain biking, kayaking or rock climbing. Daniel is a frequent starter in international desert or mountain ultra races, triathlons and other multi-sport events.
He successfully completed the inaugural GlobalLimits events Cambodia 2012, Sri Lanka 2015 and Albania 2017 and finished all of them in the Top 6.
In 2013 he already volunteered at GlobalLimits Bhutan and in 2016 in Cambodia.
Now Daniel makes use of his excellent knowledge of the course in Cambodia and the needs of the runners when navigating.

Barbara Blok, Boulder/USA - Medical Director

Barb is an Associate Professor of Emergency Medicine at University of Colorado School of Medicine and Associate Residency Program Director at the Denver Health Residency in Emergency Medicine. Originally from Michigan, she completed her Emergency Medicine training at The Johns Hopkins Hospital in Baltimore, Maryland.  She has called Colorado home for the past 13 years and has been teaching and practicing Wilderness Medicine since her arrival.  

She loves making time for outdoor adventures in the form of hiking, Nordic skiing, biking, and trail running.  She has even finished a couple of ultra-marathons!

Hillary Davis, Lakewood/USA - Race Doctor

Hillary is the current Wilderness and Environmental Medicine Fellow at the University of Colorado, Denver. She completed her Emergency Medicine training at the University of Rochester Medical Center and her Ph.D. in Biomedical Engineering at the University of California, Davis. She enjoys assisting in the instruction of Wilderness First Responder and Advanced Wilderness Life Support Courses.

In her free time, she tries to get outside as often as possible, usually in the amateur forms of backpacking, climbing or mountaineering. She runs with her basenji, 'Sequoia,' as her cat, 'Monomer,' will not partake.

Harri Washington, Great Britain - Volunteer

Harri is originally from the UK and has lived and worked in Madagascar, Gabon, and Cambodia.

Working in wildlife conservation means that she has had the privilege to see some beautiful parts of the world, which she explores through another passion, running. She has been living in Cambodia for ten months now, where she enjoys running cross-country out in the remote province of Mondulkiri, as well as joining group runs in Phnom Penh and the surrounding area. She enters organised races in every place she lives.Harri just finished 3rd female in her first multi-day stage race at GlobalLimits Albania 2018.

She is looking forward to being inspired to take her running to the next level by experiencing firsthand the challenges and rewards of a GlobalLimits race.

Harri already served as a volunteer at GlobalLimits Cambodia 2016 + 2017, Bhutan 2017 and the inaugural race in Albania.

Olly Griffin, Great Britain - Volunteer

Olly has lived in eastern Cambodia for almost two years, where he works with an organization supporting the government and local people to protect the wildlife and forests of Keo Seima Wildlife Sanctuary.

A 'slow and steady' runner, he has completed several half marathons in the UK.

Olly already served as a volunteer in Cambodia 2017..


Steven Hobert, Hamme/Belgium - Volunteer

Steven is a sports- physiotherapist in Belgium and red cross first aid teacher.

He is the checkpoint coordinator on Roc du Maroc (mountainbike) and Morocco desert challenge (rally) as well as the camp-manager at Libya desert challenge and Touaregtrail.

Steven is an experienced outdoor and remote first-aid and physio.

He is a trailrunner, mountainbiker, seakayakcoach and is a former officer para-commando Belgium.

Steven already served as a volunteer in Albania 2018.

Amy Sparks, New Zealand - Volunteer

Originally from the UK, Amy moved to NZ 10 years ago and has never looked back.  Having volunteered across the world for mutlistage ultra marathons she loves travelling, meeting new people and seeing them achieve amazing things.  After seven events she has finally transitioned from volunteer to competitor at the A20 race in NZ, Feb 2019.

When she's not travelling the world, Amy is the Marketing Manager at a print, website and signage company she owns with her husband, or can be found Olympic Lifting at the gym.

Mario Machado, Lisbon/Portugal - Volunteer

Mario, a physical Education teacher and international athletic coach, is the technical director of the Lisbon Half Marathon (30.000+ runners), the Portugal Half Marathon, the Lisbon Marathon and the organizer, technical director and controller of the race of various other high profile road races in Portugal and international trail races.

Since 2009 he is also the "Controller of the race" of the Marathon des Sables in Morrocco.

Mario is the publisher and director of "Spiridon-Portugal" running magazin since 1978.

He is also a very experienced runner himself. He just finished his 100th Marathon/Ultra at GlobalLimits Cambodia 2017.

Mario already served as a volunteer for the inaugural race in Albania in 2017 and was course director in Albania 2018.

Hun Socheat, Siem Reap/Cambodia - Logistics and Infrastructure

Socheat has got 10 year experiences working for two of the leading international travel companies in South East Asia. He has extensively traveled in the region including Cambodia, Vietnam, Thailand, Laos, Myanmar and Singapore. His last positions were Office Supervisor and Reservations Manager. Socheat has also been leading many cycling trips in the regions. He has joined Angkor International Bike Racing with his colleagues for many years to raise the fund to support children with HIV/AIDS and landmine victims.

Apart from professional business, Socheat has a long term career with the UN since 1993, the European Union (1996-1998). Socheat has also actively participated in social and community works. More than 5 years, he has volunteered his time to work as Project Manager for Arcadia Associate Inc.,(Seattle base) to support some the International and Local NGOs in Cambodia. Clients served: SILAKA, Church World Service (CWS), American Friend Services in Cambodia (AFSC), Mennonite Central Committee (MCC), PACT, Working Group for Weapon Reduction (WGWR), Youth Resource Development Program (YRDP), Youth For Peace (YFP), Action Conflict Transformation (ACT), Friend Economic Development Association (FEDA).

Socheat has got bachelor of English and Master of Business and Administration.