Mt. Si Relay & Trail Runs 2018

• 50K Trail Run:- Ultra Distance Trail Run - 31 Miles
• 50 Mile Trail Run:- Ultra Distance Trail Run - 50 Miles
• Trail Half Marathon:- Trail Run 13.1 Miles
• 20 Mile Trail Run:- Trail Run 20 Miles

-) 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.