TRTHLN coaching & community
Personal trainer
4.65+ reviews · GoogleTRTHLN offers personal triathlon coaching, a Strava community and triathlon information.

About TRTHLN coaching & community
TRTHLN coaching & community offers personal triathlon coaching and a community for triathletes. Coaching is tailored to the athlete’s level, goal and available time.
Personal coaching
Coaching includes a personal training plan for swimming, cycling, running and recovery. Training data, progress and feedback are used to adjust the plan.
- Personal training plan
- Analysis and adjustments
- Contact via WhatsApp
- Periodic 1-to-1 video calls
Triathlon community
The community is active on Strava. Members can share training sessions and posts, respond to one another, ask questions and follow what others are working towards.
- Community on Strava
- Triathlon knowledge base
- Blog
About the coach
Boudewijn Leunissen is a triathlete and a triathlon coach certified by the Dutch Triathlon Federation.
Intake
An intake conversation is free of charge and without obligation. It covers the athletic goal, training background, available time and expectations.
Services
- Personal triathlon coaching – monthly
- Personal triathlon coaching – quarterly
- Personal triathlon coaching – yearly
At a glance
| Listed under | Personal trainer, Coach, Gym |
|---|---|
| Google rating | 4.6 out of 5 (5+ reviews) |
| Website | trthln.nl |
| Last updated | November 2026 |
Good to know
- Brands
- TrainingPeaks, Strava
- Free intro
- Yes
Ratings
Ratings belong to the platforms named. Read the reviews there.
Contact
TRTHLN coaching & community does not manage this listing yet. Contact the business directly.
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