Centennial 100 Relay and Ultra Run

JUN
19
2027
A 100 km out-and-back on the Centennial Trail from Historic Downtown Snohomish to Arlington and back, offered solo or as 2, 4, or 6 person relays with six legs and seven cowbells.
Sat 19 Jun 2027
100 kilometers

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Centennial 100 Relay and Ultra Run

The Centennial 100 is a 100 km (62 miles) running event held Saturday, June 19, 2027, in Snohomish, Washington. The route follows the Centennial Trail from Space 802 in Historic Downtown Snohomish north to the Nakashima Barn in Arlington and returns to Space 802 for the finish.

Race formats cover the full 100 km distance either as a solo entry or as a relay team. Available options include:

  • 100K Solo
  • 2 person relay covering 100 km total
  • 4 person relay covering 100 km total
  • 6 person relay covering 100 km total

The trail course is divided into six legs. At the end of each leg the runner who completed that leg receives a Centennial cowbell; a seventh cowbell is presented at Space 802 at the finish. Relay exchanges and team support are part of the event logistics along the trail. The course passes through Pacific Northwest scenery between Snohomish and Arlington and is organized as a single out-and-back route on the Centennial Trail. Visit the organization's website for the most recent information.

100 km
100 Relay - 2 Person Team
100 km
100 Relay - 6 Person Team
100 km
100 Relay - 4 Person Team
100 km
100 Solo - 1 Person
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