Wim Boonstra   Heldersport

Experienced swim, bike and run coach with expertise in providing fun and functional programs for all distances and experiences.
Work with a unique functional strength based program to achieve great improvements while staying injury-free.
Over 15 years in corporate IT allows for programs tailored to time-crunched and driven business people.


Heldersport was founded by Wim Boonstra. Wim's enthusiastic, energetic and has been active in endurance sports for years. Trained as a triathlon coach (Dutch Level 3 certified) and working in the USA for a number of years with a top coach have shaped his background. Having over 15 years of experience in coaching (IT) business teams is an added advantage; Wim's understanding of the demands of a corporate environment is unmatched.

Heldersport's expertise is clarification; making complex situations simple and clear. Endurance training can be made pretty complicated and it doesn't have to be.
Wim understands the technique of the sport and training, and supplements that with an excellent feel for what each athlete needs. Also in groups and teams a unique view from his business experience comes into play.

Please contact Heldersport to see what we can do for you.



Preferred Athlete Levels

Intermediate, Advanced, Professional


1-on-1 Coaching, Consultations, Group Coaching, Local Coaching, Remote Coaching, Strength Training, Mental Skills, Training Camps, Run Analysis

Sport Types

Triathlon, Road Cycling, Running, Duathlon, IRONMAN, Swimming, Corporate Wellness


English, Dutch, Flemish