The OC&C Ringvaart Regatta is a 100 km long rowing regatta. The race starts in Leiden and goes over the Kaag to the North. It goes around the  Ringvaart canal back to Leiden to eventually finish in Delft. The full route can be seen in the picture below. It was first organised in 1976 to celebrate the 100th anniversary of D.S.R.V. Laga. The first time only three boats participated in the race, but nowadays over 150 boats start the 100 km challenge. This year the OC&C Ringvaart Regatta takes place on May 29th.

Along the route there are 5 stops with toilets and water supply. The distance between each stop is around 20 km. The last stop is situated at 85km in Leidschendam. Here all the boats will be lifted out of the water by volunteers, since there is a lock that cannot be passed. After a stop of 30 minutes where rowers can get a massage, the last kilometres can be rowed to Delft. The finish location will be festive with music to celebrate the success of finishing the OC&C Ringvaart Regatta.

The last 500 meter will consist of a sprint competition. The times of all boat numbers will be converted to a percentage of the best time in that boat number, the boat with the lowest percentage wins the sprint. The same is done for the overall winner of the OC&C Ringvaart Regatta.

Due to the rough water at the big lake the Kaag, it is possible that the race cannot take place on May 29th in case of extereme weather conditions. If this would be the case, the race will take place on the 12th of June. 

How to register for the 49th OC&C Ringvaart Regatta? 

From the 29th of March 2024, 12.00AM – 29th of April 2024, 11.59PM, it will be possible to register for the OC&C Ringvaart Regatta. If you want to participate in the OC&C Ringvaart Regatta, please register yourself twice: 

  1. Once with us, the organizing committee, via our email:
  2. Once with the National Rowing Association (KNRB)

In the email to the Ringvaart Regatta Committee, please include the following information:
  1. Your names and the email adres of one team member
  2. Name of your rowing club
  3. Whether you will be able to bring your own boat 
If you will bring your own boat, please include the following information as well: 
  1. Name of transporter
  2. Lisence plate
  3. Name and phone number of driver
  4. Date of arrival and e.t.a.
  5. Type (and number) of boat(s)

To register at the KNRB, please do the following:
  • If you have already participated in last year’s event, you should have received a username and a password on behalf of your rowing club. You can re-use these credentials for this year’s registration and sign up at If you have lost your credentials, please send an email to the KNRB (
  • For new entries, send an email to the KNRB (, at least one week before the closing date of entries, and include the following information:
  1. Full name of the rowing club
  2. Country
  3. Contact name and email adres
And for combination crews (Dutch-foreign / foreign/foreign) please also include the following information:
  1. Event number
  2. Club names
  3. Names and birthdates of rowers/coxes plus seating

There is also a rowing booklet availabe below with essential information regarding the OC&C Ringvaart Regatta. In this booklet, you can find information like: bridge heights, important contact information and sailing rules. 

If you have any questions about rowing the OC&C Ringvaart Regatta, please do not hesitate to send us an email at