Rondsje Om 500m

• -LIVE 500m January 18th 2026 (please see website for time schedule)
• -500m manual submissions and leaderboards open at 0900 CET January 12th 2026, and close January 17th at 0900 CET.

WaddenZee Events aims to be a platform where sports, culture, and community come together to make the soul of the Wadden Sea region tangible and audible. It provides a space for events that are not only about performance, but also about preserving and sharing stories, songs, traditions, and the unique culture of the Wadden Sea.

Join the Rondsje Om Marathon. The Rondsje Om aims to connect rowers and sports enthusiasts worldwide through a virtual experience that brings together sport, heritage, and location experience. It's a virtual rowing challenge that translates the maritime history of Terschelling and the beauty of the Wadden Sea into an inspiring and groundbreaking sporting event for sports enthusiasts.

The Rondsje Om Marathon includes 5 races (for both teams and individuals):

• -Rondsje Om Marathon
• -Rondsje Om Half-Marathon
• -Rondsje Om 5000m
• -Rondsje Om 2000m
• -Rondsje Om 500m

Team Sign-Up

No teams for the 500m

Rules & Info

• -All races and their respective leaderboards, will open 0900 CET January 12th 2026, and close either January 17th or 18th at 0900 CET.
• -Rowers IN OTHER TIME ZONES may compete independently at their local time while the leaderboards are open.
• -If you are rowing on machine that does not interface with ErgZone, or on a Concept2 RowErg with a PM older that the PM5, you can still compete! You won't be able to connect to live racing on ErgZone, but you can manually submit your score on the ErgZone app. It will count in our official results and rankings.

Refunds & Scratches

There will be no refunds. Please know this upfront. We count on your entry fee to support this event and all its associated costs.

Age Divisions

• -SGGM = Super Great Grand Master > 70
• -GGM = Great Grand Master > 60
• -GM = Grand Master – 50-60
• -M = Master – 27-49
• -O = Open – 20-26
• -JR = Junior – 0-19

Weight Categories

• -Lightweight Women: <= 135lbs (61.5kg)
• -Heavyweight Women: > 135 lbs (61.6kg)
• -Lightweight Men <= 165lbs (75kg)
• -Heavyweight Men > 165lbs (75kg)

Adaptive Categories

• -PR1
• -PR2
• -PR3

IMPORTANT

By registering for the Rondsje Om Marathon, I declare that I am physically able to compete and in no way RoBox Fitness, ErgZone, or any of their partners or sponsors liable for any injury or health issue I may sustain by participating. I'm entering at my own risk!