Rondsje Om Marathon

Key dates to save:

• -LIVE training begins in July 2026
• -LIVE Marathon January 17th 2026 (1300 CET)
• -LIVE Hal-Marathon January 18th 2026 (1400 CET)
• -Row submissions and leaderboards open at 0900 CET January 1st 2026, and close January 18th at 1900 CET.

WaddenZee Events hosts global challenges that fuse the rich traditions of sloep rowing with the modern spirit of hybrid athletes, competitive rowers, and fitness enthusiasts. Hosted both online and LIVE in Terschelling, Netherlands, it's grounded in the soul of the Wadden Sea. Each event turns measured fitness into a vessel for connection, competition, and legacy.

Join the Rondsje Om Marathon, a most unique virtual endurance challenge inspired by the legendary waters and maritime heritage of Terschelling, Netherlands. Race solo or with your team — from anywhere in the world.

The Rondsje Om Marathon includes 5 races and 3 packages:

• -Rondsje Om Marathon (also available LIVE from Terschelling Saturday, Jan. 17th)
• -Rondsje Om Half-Marathon (also available LIVE from Terschelling Sunday, Jan. 18th)
• -Rondsje Om 10k (also available LIVE from Terschelling Sunday, Jan. 18th)
• -Rondsje Om 5k (also available LIVE from Terschelling Sunday, Jan. 18th)
• -Rondsje Om 500m (also available LIVE from Terschelling Sunday, Jan. 18th)

The packages are great options. The reasoning was to get the most out of our local Concept2 RowErg rental for the weekend of January 17th and 18th in Terschelling. And to allow local sloep rowing teams to row as individuals on the opposite day:

• -Rondsje Om Marathon + 10k (the 17th and 18th respectively)
• -Rondsje Om Marathon + 5k (the 17th and 18th respectively)
• -Rondsje Om Marathon + 500m (the 17th and 18th respectively)

Team Sign-Up

Sloep Boats, Olympic 8+ and other hybrid athlete teams are welcome to participate in head-to-head marathon rankings. All 8 rowers will row together. ErgZone will calculate the average pace for the collective boat. This would be very exciting during the marathon race on Saturday, June 17th.

• -Teams must consist of either 8 males or 8 females (no mixed teams for 2026).
• -Boats will be categorized by gender only.
• -Individuals will register for the marathon, and ErgZone will handle the rest. This Team Sign-Up article explains how it is done!

Rules & Info

• -All races and packages, and their respective leaderboards, will open January 1st 2026, and close January 18th at 1900 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!