Follow us on
Instagram
Facebook
Twitter
Youtube
Threads
Tiktok
Bluesky
Sign In
LA 2028
Triathlon Live
Triathlon Live
World Triathlon
back
Events
Events
Event Search
Event Sustainability
Featured Events
World Triathlon Championship Series
World Triathlon Cups
World Championships
T100 Triathlon World Tour
Olympics
Paralympics
Youth Olympic Games
Trending events
Live Event Coverage
Live Timing
Rankings
Rankings
World Rankings
The best-performing triathletes of the season
World Triathlon Para Rankings
Rankings sorted by Para Triathlon Sport Classes
Continental Rankings
Rankings by Continental Federation
Ranking Archive
Archive of Ranking Data from previous years
Athletes
Athletes
Athletes Hub
Athletes Search
Head to Head
History of Champions
Olympic History and Medallists
Paralympic History and Medallists
Triathlon World Champions
For Athletes
Athlete Documents
Race Certificate Download
The Sport
The Sport
Programs
Elite
Age-Group
Para Triathlon
Triathlon Mixed Relay
Multisport
Aquathlon
Duathlon / Cross Duathlon
Cross Triathlon
Long Distance Triathlon
Winter Triathlon
About Triathlon
Frequently Asked Questions
Talk like a Triathlete
News & Media
News & Media
News
Videos
Photo Galleries
Media Centre
Development
More
More
About
Inside World Triathlon
Federations
XXXIX World Triathlon Congress
World Triathlon Executive Board
Committees, Commissions & Tribunal
Hall of Fame
Partners
Clean Sport
Medical
Anti-Doping
Prevention of competition manipulation
Safeguarding & TRI CARE
Resources
Document downloads
Brand Resources
Contact
Jobs
Follow us on
Instagram
Facebook
Twitter
Youtube
Threads
Tiktok
Bluesky
Sign In
LA 2028
Triathlon Live
Triathlon Live
Search
close
David Koolstra
Athlete's Profile
Netherlands
2006
World Triathlon Athlete ID:
182890
Rankings & Stats
Starts
2
Podiums
0
Wins
0
Latest Athlete Results
View all results
All
POS
Date
Event
Program
Time
13
2024-06-23
2024 NED Sprint Triathlon National Championships
Junior Men
01:07:15
14
2023-06-11
2023 NED Sprint Triathlon National Championships
Junior Men
01:12:12
