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.

Manuel Pastor, Burgos/Spain - Course Director

Manu is born to run!
He is also a passionated bicycle rider.
Having participated in lots of different long-distance and ultra races he is now fascinated by the ultrastage race format.
After completing the two innaugural GlobalLimits events, Cambodia 2012 and Bhutan 2013, which he finish both ranking second overall. Manu has already registered as a runner for GlobalLimits Sri Lanka which will qualify him to receive the "GlobalLimits Heritage Site Runner" series award. Manu volunteered at GlobalLimits Cambodia 2013 and Bhutan 2014 as well as being a course director at Cambodia 2014, 2015 + 2016 and Bhutan 2015, 2016 + 2017 where he can make use of his excellent knowledge of the course and the requirement of the runners.
His favoured comment about GlobalLimit races: "Its about more than just running at the end of the day."

Amy Sue Biondich/USA - Medical Director

Amy is a board-certified Emergency Medicine physician from Wisconsin.  She has completed specialty fellowship training in Wilderness and Expedition medicine.  This training has allowed her to combine her passions of helping people with her love of world travel and adventure.  In addition to working full-time in several Emergency Departments, Amy's experience includes completion of her AWLS certification, participating in Wilderness Medicine podcasts, speaking at national Wilderness Medicine conferences, and completing research within the field of race medicine.

Amy has been the medical director for 6 GlobalLimits events, and has been a part of the medical team at numerous other multi-day endurance events.  When not working, she enjoys hiking, flying her small airplane around the US, travel, and pretty much any outdoor activity.

Given her love of the wilderness, Amy has started her own expedition medicine company, The Less Traveled Road, LLC.  To read more about her adventures, please see her blog:

Andrea Ferrai/USA - Race Medical

Andrea is an Emergency Physician in New York.  Prior to starting medical school, she had training as a Wilderness First Responder and EMT that enabled her to serve as a backcountry guide and ski patroller both at resorts and in the backcountry.  She also put her skills to use as a volunteer on an alpine search and rescue team in California.  Throughout her medical training, she continued her involvement in wilderness medicine through interest groups and wilderness medicine electives.  She is currently working as an academic physician and completing a fellowship in Wilderness and Expedition Medicine.  She has volunteered as part of the medical team at the NYC Marathon multiple times as well as Grand to Grand and the Jungle Marathon stage races.  She is looking forward to joining the GlobalLimits team in Cambodia.

When not working, Andrea can be found hiking, skiing, running, reading, cooking and enjoying the food and entertainment of New York City.

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.

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, Bhutan 2017 and the inaugural race in Albania.

Nieves Maroto Collado, Blanes/Spain - Volunteer

Neus has traveled to more than 70 countries, and has participated as a volunteer in several ultra trails and stage races around the world, as she accompanies her runner husband in all the adventures that are proposed.
She has been in the Amazon of Brazil, in the Peruvian jungle, in the Himalayan mountain range, in the Arctic, among many others. She also organized the Costa Brava Xtrem Running for 5 years, an annual stage race involving up to 400 runners from more than 45 different countries.

Chemistry by profession, passionate about paddle surf and an amateur athlete, always ready to help and enjoy the adventure of ultra trails. After her experience as a volunteer in this type of racing, she admires the persistent spirit of the runners.

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.

See Hong Tan,  Singapore  - Volunteer

Born in Malaysia, Hong Tan has lived in Singapore for most of her life and enjoys running, swimming and dragon boating.

She has completed multi-stage races in Costa Rica and GlobalLimits Cambodia 2014 -The Ancient Khmer Path, challenging her personal limits to the maximum.

She is very excited to be volunteering with GlobalLimits Cambodia this year and is looking forward to help participants taking a step closer to their dreams coming true!

Hong Tan already served as a volunteer in GlobalLimits Sri Lanka 2016 and Bhutan 2016.

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.