Our 2019 sanctioning fees are as follows. These do not include membership or your boat. See whats included on the Sanctioning page.


Strait of Juan de Fuca

Puget Sound swims

Lake Washington swims

Mercer Island Marathon Swim


$  440

$  280

$  220

registration open



Published rates are for established swims, single swimmer, one way. Prices may vary for custom swims, tandem swims, or doubles - contact us for more information.


Payment due

Your swim application is not complete until dues and sanctioning fees are paid in full. Payment in full is due 90 days prior to the swim date (or first day in swim window).


Refund policy

A refund of 75% will be given for swims cancelled more than 30 days prior to the date of swim (or first date in swim window). Membership dues are not refundable.



Lifetime members may deduct $50 from their sanctioning fees for 2019 swims.


Payment options

Cash or check:

Make checks payable to 'Northwest Open Water Swimming Association.' Remit to: 700 E Denny Way #211 | Seattle, WA 98122


Payments may be made electronically via PayPal. The direct cost of PayPal fees will be added. Fees are approximately 2.3% and are calculated as (SUBTOTAL+0.30)/(1-1.022). This fee does not apply to payments made by cash or check. To pay with this method, please contact us for more information.