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.


Richard Belderok

Race Director

Jefry Visser

Operations Director

Jort Vlam

Commercial Director


We couldn’t do it without them and all our volunteers

Arthur Lambregts

Motor Brigade

Bart Bockhoudt

Parcours / CP

Boudewijn Vlam

Water Brigade

Carina Graman

Green Bags

Corry Aarts

Secretary & Infodesk

Debby Angenent

Volunteer Administration

Debby van Dongen

Office Manager / Registration

Fons Ketelaar

Motor Brigade

Derek Haenen

Run Course

Frank Veltman


Gertjan Steltman

Accomodation & VIP

Harm-Anton Kiefte

Bike Course

Henri Jacobs

Race Security & Support

Jolanda Felix


Jorg van Eck

Junior Challenge

Judith Ettema

Athletes Care

Lianne van Dijk

Secretary & Infodesk

Marjan van Aken

Junior Challenge

Marlous Droog

Medical Services

Niels van Mourik


Rik de Lange

Water Brigade

Richard Treffers

Corporate Ambassador/Sponsorship

Roy Philip

Food Court

Shanna Weterings

Warehouse & Logistics

Sylvia de Vries

Motor Brigade

Tim Moria

PR & Media

Walter Hubers

Security & Event Control


Astrid Overeem

Aid Station Run Course 2

Bas Kuhlmann

Aid Station Run Course 1

Chantal Theuns

Aid Station Run Course 3

Debby Angenent

Aid Station Run Course 2

Dick Nieskens

Aid Station Run Course 3

Edgar Donkervliet

Lead Cyclists

Inge Philip

Volunteer Care

Jan de Veen

Aid Station Run Course 1

Jeanette Hendriks

Warehouse & Logistics
Aid Station Bike Course 4

Joanette Peeters

Athletes Care Finish Area

Juanan Fernández

Award Ceremony

Kim Kodde

Aid Station Bike Course 2

Mario Pot

Doping Control

Marius van Gasteren

Volunteer Care

Martin Reinders

Run Course

Menno Wijkhuizen

Water Brigade: Canoeists

Niek Withagen

Warehouse & Logistics
Aid Station Bike Course 1

Petra Bus

Athletes Care Kunstlinie

Piet Koole

Aid Station Run Course 4

Remko Evenboer

Aid Station Run Course 5

Renske Sellwood

Transition Tent

Rob Fokkens

Water Brigade: Divers

Rob Majoor

Aid Station Bike Course 3

Sandra Majoor

Aid Station Bike Course 3

Sebastiaan de Reij

Aid Station Run Course 4

Suzanne de Veen

Aid Station Run Course 1

Willemijn Huizinga

Waterstation Esplanade

Do you want to be part of  CHALLENGEALMERE-AMSTERDAM?

Come and join us as volunteer. Be part of the family!

Register as a volunteer