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Anniversary 300K (ACP)

Our waiver and registration process does not work with the Facebook IOS integrated web browser. To open this page in a "real" (native) browser:
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  • Continue with the waiver and registration process.

Registration opens Wednesday, May 17 at 12:01 AM (Pacific Time).
To register online: sign in to your SIR member account. Don't have one? Create one. It's free!
Once you login the Register button will be visible on the right side of this page (or bottom for mobile browsers).
  • Advance registration is required — we cannot accommodate same-day registration.
  • Membership: All riders must have current RUSA and SIR memberships (you'll enter your RUSA number during registration). Don't have a RUSA membership? Join here (or renew if your RUSA membership has expired). Allow a few days in advance for RUSA verification.
  • Online registration is open until Wednesday, June 14 at 11:59 PM (Pacific Time).
  • Ride cost is $30 paid online at the time of registration.
Registration has closed for this event. We cannot accommodate same-day registration at this time.

The online registration includes signing a responsibility waiver using the same SmartWaiver system used for RUSA Permanents.


Come celebrate the 29th anniversary of SIR's first 300K brevet!

The first 300K SIR brevet took place May 15, 1994. It started from Clinton at the ferry terminal on Whidbey Island; went up Whidbey Island, crossed over Deception Pass, then came down Route 9 (this was pre-Centennial Trail) finishing in Mukilteo near the ferry terminal. 26 riders started, including a few familiar names:
  • Mark Roberts
  • Ken Krichman
  • Duane Wright
  • Ron Himshoot

Route Description

RUSA Route #2968 "Centenary 300K Brevet"

This year's ride starts at the Clinton Park & Ride. We head to Langley and work our way around the island to Oak Harbor, the Naval Air Station, over Deception Pass, around the Swiomish Reservation and then familiar roads around Sedro Wooley, Mount Vernon and Arlington to end in Mukilteo at the Silver Cloud Hotel.

Pre-Ride Notes from Jan Acuff and Thai Nguyen

  • Word of caution on Whidbey – there is loose gravel on Satterlee Road and after Deception Pass, getting on Deception Pass (mile 69.7, ~112.2K) construction work with a deep gravel pit across the road on descent – REMINDER – a few miles after the Deception Pass bridge can be very busy on the weekends – stay to the right and be patient with drivers
  • Alger Cain (Lake) Road (about mile 105-110) there is new oil/tar and chip seal being laid down. There may be long lines of cars and trucks to get through. Hopefully the road will be tamed down of traffic by the weekend, but there may be loose gravel on the edge of the road
  • Mile 133.6 – like the Spring 600k get on trail at Gardner Road – this cuts the gravelly part starting at Peterson Anderson Road
  • Mile 136 – like the Spring 600k on the return through Mt Vernon. Left on Whitmarsh Road is preferred
  • On the Scenic Heights Road before getting to Oak Harbor there are concrete barriers with road closed sign, but it is easy to get around – so don’t go bombing down the hill
  • There is usually a lot of traffic on Highway 9 – busy from Sedro Woolly to Mt. Vernon – stay to the right and be patient with cars
  • If you don’t want to stop in LaConner – on the Swinomish reservation you can go about 2 blocks off course to the bathroom at the park and then a block over to the Chevron Station.
  • Finish is at The Silver Cloud Hotel Lobby – NO BIKES IN THE LOBBY


Unless you live on Whidbey Island you'll want to park on the Mukilteo side. There's a new long-term parking lot (up to 72 hours) across Front Street from the Silver Cloud Hotel and Ivar's. Note that the Google imagery is out-of-date. The new lot is roughly where the old ferry holding area used to be. It's ~300 meters from the parking lot to the ferry toll booths.

Mukilteo long-term parking lot on Front Street.
Mukilteo long-term parking lot on Front Street

Mukilteo long-term parking rates.
Mukilteo long-term parking rates

NOTE: All other lots in this area are limited to four hours maximum and most are signed "no overnight parking". If you choose to park elsewhere, choose carefully. Nobody wants to finish a 300K only to find their vehicle has been towed.

On-street Parking

There is limited street parking around the YMCA (10601 47th Pl W, Mukilteo, WA), south of Harbour Pointe Blvd. It will be 4 miles downhill to the ferry.


The start is at the Clinton Park & Ride, behind the Post Office:

Clinton Park & Ride
4801 Deer Lake Rd
Clinton, WA 98236

Plan on catching the 6:00am Mukilteo-to-Clinton ferry. We will check-in riders (including safety check) prior to boarding the ferry. Get your brevet card from the organizer, then a volunteer will perform the safety check and mark your card. When you arrive in Clinton, ride 0.5 miles up the road from the ferry to the Clinton P&R, on the left. The organizer will start the ride once everyone has assembled there.

The start time has been corrected to 6:30 am to align with the recommended 6:00 am ferry sailing time. If you miss the 6:00am ferry the next one is at 7:00am which means you would start the ride one hour late.

Pre-buying tickets online (for you AND your bike) directly from WSDOT will save a little pre-6:00am hassle.


The finish is at Silver Cloud Hotel - Mukilteo Waterfront:

Silver Cloud Hotel - Mukilteo Waterfront
718 Front St
Mukilteo, WA 98275
(425) 423-8600

Route and Cuesheet [FINAL]

Note: Printed cuesheets will not be available at the start. You may choose to print your own. To print the cuesheet from the route page, click the More button, then select Print Cuesheet.

General Rules

  • All riders are required to have read and signed a waiver (part of the online event registration) before beginning the ride.
  • All riders must comply with local traffic laws as well as RUSA's Rules for Riders.
  • All riders must have front and rear lights, a reflective vest or sash, and reflective ankle bands. See RUSA Article 10 for details. Be prepared to show these to the ride organizer at the start. Lights should be on during any low-light conditions (rain, fog, night, tunnels, etc).
  • All riders who cannot finish a ride (DNF) must contact the organizer ASAP using the phone number on the brevet control card.
  • All riders must turn in their signed brevet control card at the ride finish.
  • All riders must check-in with the organizer or a volunteer at the start, the finish, at any overnight controls.
Saturday, June 17, 2023, 6:30 AM
Clinton Park & Ride
(behind Post Office)
4801 Deer Lake Rd
Clinton, WA  98236
Additional Info:
Event Contact(s):
Rose Cox
2023 Brevet Schedule
Registration is required
Payment In Full In Advance Only