About us
More than 40 Years of triathlon history
Almere is the beating heart of Dutch triathlon with the CHALLENGEALMERE-AMSTERDAM as its highlight: a unique event by international standards, which is a once in a lifetime experience for athletes, volunteers, and supporters.
The CHALLENGEALMERE-AMSTERDAM is organized by volunteers only. The board and three race directors direct a team of managers. Each of these managers gets help from a group of volunteers to organize their specific part of the race. Various volunteers are active throughout the year in order to prepare the race. Managers meet each other every six to eight weeks to discuss preparations for the race and take days off for the race in order to build and dismantle the event.
The directors are Richard Belderok (Race Director), Jefry Visser (Operations Director), and Jort Vlam (Commercial Director). All three grew up in Almere and became involved in triathlon at a young age. As triathletes, they all finished the Long Distance triathlon in Almere one or more times. Together with the board, they were responsible for the shift of Holland Triathlon to CHALLENGEALMERE-AMSTERDAM in 2013. The three directors are also involved in the organization of CHALLENGEFAMILY, TRI HARD Series Netherlands and Stichting Start2Finish in Almere.
Meet our amazing Managers Team
The Faces Behind CHALLENGEALMERE-AMSTERDAM
We couldn’t do it without them and all our volunteers

André Postma
Volunteer Affairs

Arjan Dokman
Volunteer Care

Walter Hubers
Security & Event Control

Boudewijn Vlam
Water Security

Carina Graman
Kunstlinie: Green Bags + Massage

Corry Aarts
Secretary & Infodesk

Debby Angenent
Volunteer administration

Debby van Dongen
Office Manager / Registration

Tim Moria
Press, PR & Marketing

Derek Haenen
Run Course

Bart Bockhoudt
Manager Motard

Frank Veltman
Starts

Gertjan Steltman
Accomodation and VIP

Harm-Anton Kiefte
RSS: Bike Course

Henri Jacobs
RSS: Race Security & Support

Jelle Wiebenga
RSS: Bike Course

Jeroen Fakkeldij
Transition Area

Jolanda Felix
Eventmanager – Kunstlinie

Judith Ettema
Athletes Care

Lianne van Dijk
Secretary & Infodesk

Niels van Mourik
Eventmanager – Esplanade

Matthijs Wubs
Eventmanager – Esplanade

Marjan van Aken
Junior Challenge

Marjelke Paré
Athletes Care

Marlous Droog
Medical Services

Richard Treffers
Corporate Ambassador/Sponsorship

Roy Philip
Catering

Shanna Weterings
Warehouse & Logistics

Willem Westhoff
Production Consultant