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HomeBrevetsSpring 400K

Brevets - Event View

This is the "Event Detail" view, showing all available information for this event. If registration is required or recommended, click the 'Register Now' button to start the process. If the event has passed, click the "Event Report" button to read a report and view photos that were uploaded.

Spring 400K

Registration opens Thursday, April 22 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, May 19 at 11:59 PM (Pacific Time).
  • Ride cost is $45 paid online at the time of registration.
Registration has closed for this event. We cannot accommodate same-day registration at this time.

Due to continuing COVID-19 concerns, this will be a no-contact brevet with all online registration and no manned food controls. We encourage you to bring along your own food and drink, but the route does pass through numerous towns where there are opportunities to refuel. We will report separately on specific COVID-19 protocols, which will apply not only to this brevet but also to future rides for an indefinite time period.

The online registration includes signing a responsibility waiver (using the same SmartWaiver app used for RUSA Permanents). After registering, you'll receive a confirmation email containing a link to the SIR waiver. Complete and submit the waiver to finalize your registration.

With regard to the waiver, we're bound by RUSA insurance rules, which stipulate that riders confirm the email address entered on the waiver. Here's an overview of the process:
  1. Go to, complete the waiver, including your email address. This link is also in your event registration email. To minimize confusion, please also use these for the appropriate fields in the waiver:
    • Designated Event: Spring 400K
    • Designated Event Date: May 22, 2021
  2. Once submitted, you will receive an email containing a link to verify the email address. Click on the link in the email. This will confirm the waiver.
  3. Once you've confirmed the waiver, you'll receive another email with a link to the completed waiver, and your registration will be finalized.

Come join us to explore a new 400 km route from Seattle to Tacoma and out into the Cascade Foothills.

To honor Tacoma's Frank Herbert and his sci-fi masterpiece Dune, we will visit the new Dune Peninsula Park built in Tacoma at the site of a former smelter (See Why did we name it Dune Peninsula?). You'll learn that as a teenager, Frank had a randonneur streak in him. We'd like to think he would approve of our human powered challenge through the region. We'll ride through urban/suburban/industrial areas then head into the less impacted but still threatened Cascade foothills. In the quite moments, you can ponder our impacts on the planet - which is one of the themes in Dune as Frank Herbert was heavily influenced by the smelter and environmental destruction of Puget Sound he observed as a child. The route will let you experience the ‘pleasures’ of the major planetary forces that shape our region: Hills formed by ice age glaciers 1 mile thick; 200+ ft high lahar flows from Mt. Rainier; and shoreline hills carved by water erosion from the never-ending rain.
I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me.
— Frank Herbert, "Dune"

Route and Cuesheet: [PRELIMINARY]

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.
Saturday, May 22, 2021, 6:00 AM until Sunday, May 23, 2021
McMenamins Anderson School
18607 Bothell Way NE
Bothell, WA  98011
Additional Info:
Kevin J Smith
2021 Brevet Schedule
Registration is required
Payment In Full In Advance Only
For all SIR events you must have front and rear lights, a reflective vest, and reflective ankle bands. Be prepared to show these to the ride organizer at the start. Your lights should be on during any low-light conditions (rain storms, night, tunnels).

You must read and agree to a waiver before beginning the ride, and you must turn in your signed brevet card at the end of the ride. If you will not finish, contact the organizer using the phone number on the card and cue sheet.