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 will go around the canal the Ringvaart 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 were rowing, but nowadays over 150 boats start the challenge of 100 kilometres long. This year the OC&C Ringvaart Regatta takes place at May 31.

Along the route there are 5 stops where there are toilets and water supply. The distance between the stops is around 20 km. The last stop is at 90 km in Leidschendam. Here all the boats will be lifted out of the water by volunteers, since there is a sluice that cannot be passed. After a stop of 45 minutes where rowers can get a massage, the last kilometres can be rowed back to Delft. At the finish there will be a festive finish 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.

The registrations open March 31 at 12:00 and will close April 30 at 23:59. The registrations will take place via the site of the Dutch rowing association the KNRB. To register you first need to be a member of the KNRB. It is recommended to ask your rowing club to do the registration. The easiest way for them to do so is by sending an email to and mention that you want to row the OC&C Ringvaart Regatta and need a trial membership for your boat. This is only valid for three months so do not do this before the 14th of March.

Due to the rough water at the big lake the Kaag, it is possible that the race cannot take place on May 31 when the weather is too bad. When this is the case, the race will take place on the 14th of June. If you have any questions about rowing the OC&C Ringvaart Regatta, please do not hesitate to send us an email at