2026 Centennial100 Relay and Ultra

About the Event

The 2026 Centennial100 Relay and Ultra takes place on Saturday, June 13, 2026, at 6:00 AM PDT, starting at Space 802 (802 1st Street, Snohomish, Washington, USA). This running festival on the 100 km (62 miles) Centennial Trail offers solo ultra running or relay teams of 6, 3, or 2 members — with themed exchanges, cowbell swag, and an after‑party featuring a beer garden, music, and food.

Solo 100 km
Tackle the entire 62‑mile course as one runner

6‑Person Relay
Each team member runs a leg (distances: 9.83, 9.61, 11.56, 11.56, 9.61, 9.83 miles)

3‑Person Relay
Shared legs across the 100 km course

2‑Person Relay
Two runners split the 100 km distance

Event Logistics & Participant Information:

Start location: Space 802 Non‑Profit, 802 1st Street, Snohomish, WA 98290.
Start times: First groups sent at 6:00 AM. Slowest teams start first; groups of 10 teams sent at a time.
Course: Full Centennial Trail, 100 km (62 miles). Route map available.
Exchanges: Themed exchanges — each exchange is its own mini running party.
After‑party: Runs from 3:00 PM until the last finisher arrives at Space 802. Includes music, beer garden, and food.
Race Swag: Mesh football jersey (unique version each year).
Cowbells: Solo participants receive 7 cowbells. Teams of 2 — each finisher gets 4 cowbells. Teams of 3 — each gets 3 cowbells. Teams of 6 — each gets 2 cowbells.
Relay Team Registration: Captain registers and pays for team; members join for free via team link/passphrase.
Registration Deadline: Closes June 13, 2026 (day of event). Price increases from $50/runner to $60/runner on September 29, 2025.
Contact: Snohomish Running Company via website.
Location: Snohomish, Washington (north of Seattle).
Refund/Transfer Policy: Not specified — check event website.

Swag, Awards & Atmosphere:

Festival atmosphere: “Ultimate running festival for all levels of runners.”
Themed exchanges: Each exchange is unique — encourages team spirit and fun.
Cowbell collecting: The more you run (or the smaller your team), the more cowbells you get.
Post‑race celebration: Beer garden, music, food until the last finisher crosses.
Mesh football jersey race swag — keepsake for participants.
Solo ultra option for those seeking maximum challenge.
Relay camaraderie: Teams of 2, 3, or 6 — great for friends, clubs, or corporate groups.
Scenic trail: Centennial Trail runs through Snohomish County, Washington.

The Centennial100 Relay and Ultra on June 13, 2026, in Snohomish, Washington, is a 100 km running festival on the Centennial Trail — solo ultra, or relay teams of 6, 3, or 2 — with themed exchanges, mesh football jerseys, cowbell swag, and an after‑party with beer garden.

Races Offered

2 person RELAY CAPTAIN

Jun 13, 2026

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Distance — 100km

terrain

Type — Running

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06:00

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$109.81

3 person RELAY CAPTAIN

Jun 13, 2026

straighten

Distance — 100km

terrain

Type — Running

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06:00

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$163.64

6 person RELAY CAPTAIN

Jun 13, 2026

straighten

Distance — 100km

terrain

Type — Running

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06:00

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$325.09

SOLO 100KM

Jun 13, 2026

straighten

Distance — 100km

terrain

Type — Running

timer

06:00

sell

$109.81

Weather History

These values represent the 3-year monthly averages for June in Snohomish.

thermostat Temperature

7.9° / 17.0°

wb_sunny Feels like

6.4° / 15.2°

light_mode Avg sunshine hours

10h 13m

water_drop Avg rainfall

3.1 mm

ac_unit Avg snowfall

—

air Avg wind speed

5.7 km/h (Light breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.6)

humidity_mid Humidity

79.8%

wb_twilight Sunrise

05:07

nightlight Sunset

21:06

About Snohomish

Learn more about the host city, Snohomish.

Snohomish, the "Antique Capital of the Northwest", is a city in the Puget Sound region of Washington state. It's downtown district is renowned for its collection of antique shops.