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Registration is Open!

General Registration Details

Relay Teams Registration Details

  • T-shirts are included in fee and guaranteed to all registered by March 31.
  • Online registration $195 per team by March 27; $225 March 28 - April 23.
  • Mail-in registration $195 per team postmarked by March 27; $225 March 28 - April 13.
  • Last gasp registration is at packet pickup on April 25 is $235.
  • Recreation teams can have 1 to 5 runners per team, any age, any gender. For Recreational teams of more than 5 runners, teams will need to register with this link
  • Non recreation teams require 5 runners per team.
  • You can register with less than 5 runners and add runners after registration.

Attention Relay Team Members

  • All relay team runners must sign a release waiver.

  • Runners unable to sign the waiver online may sign at packet pick-up or at the school on race day.

Ultra Runners Registration Details (50K and 50-mile runners)

  • Early registration (Mail-in or online) $45 by March 27
  • Late online registration $64 March 28 - April 23
  • Late mail-in registration $64 postmarked March 28 – April 13
  • Last gasp registration $70 is at packet pickup on April 25 (if max runner limit not met). 
  • To change details after you register send an email to registration@mtsirelay.com
  • Sport-Tex shirts not included in entry fee.
  • Sport-Tex shirts can be ordered for $30 at the time of registration (must be ordered before April 5th).
  • To view ultra shirt details click here.

Mail-in Registration Forms

  • Team Relay paper registration form (DOC) download here
  • Ultra paper registration form (DOC) download here
  • Mail-in registration forms must be postmarked by 4/13/2015.
  • Print the form and complete all fields for your event. Sign and mail with one check to the address below.
  • Your fee charge for the event is the same if you register online or via the paper process with check.

Mt Si Relay
P.O. Box 3321
Kirkland, WA 98083


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