Mt. Si Relay & Trail Runs 2018

  • Running : 50K Trail Run : Off Road
  • Running : 50 Mile Trail Run : Off Road
  • Running : Trail Half Marathon : Off Road
  • Running : 20 Mile Trail Run : Off Road

Race Date: Sunday, April 29, 2018

Start Time: 5am


Entry Fee: $45-$70

Address: 39801 SE Park St

City: Snoqualmie

State/Terr: Washington

Zip: 98065

Country: USA

Phone: 206 999 3060

E-Mail: [email protected]

Race Website:


-) 2018 Mt. Si Relay & Ultra Trail Runs:

The half marathon, 20M, 50K and 50M are run on the scenic Snoqualmie Valley Trail with the 50K and 50M continuing on to run on the John Wayne Pioneer Trail. The trail is old railroad grade with a gentle climb from North Bend to Rattlesnake Lake.




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Run Training:
Marathon Training Plan
Half Marathon Training Plan
10K Training Plan
5K Training Plan