From the Organizer
September is Childhood Cancer Awareness Month!
Run-Walk-Move your way
Register to participate in our month-long challenge and complete 37 miles/hours/reps/laps/vinyasas, or however you’d like to move, in support of childhood cancer.
Why 37? Sam’s favorite number was 37 because he claimed it was the forgotten number. It was as if the number had feelings, was underrepresented among the more popular numbers, and needed some attention. Well, the Sam Day Foundation highlights this so-called forgotten number because it’s a little bit like the childhood cancers we focus on - somewhat neglected, and in need of attention and resources. When you engage with us, we'll advance childhood cancer research together.
Register.
Move your way.
Raise support for childhood cancer research!
More about the Sam Day Foundation and what we are doing to help kids with cancer: www.samdayfoundation.org.
Family Discount - Register 3 or more family members for a discounted rate.
Register early to guarantee t-shirt size and style!
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
79°
Typical Low
57°
Chance of Rain
17%
Based on US Climate Normals data from Portland Kgw-Tv, 1 mi from the venue.
Host City
About Portland, OR
Population
642,715
as of 2023
City Elevation
35 ft
Nearest Airport
PDX
Portland International Airport · 6 mi
Time Zone
Pacific Time
From Endurance Grid
A big city race. Expect multiple lodging options and plenty to do the day before.
Race Location
Approximate location — pin shows the host city, not the exact venue.
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Sam Day 37-Mile Challenge, put it on the calendar, and turn “someday” into a start date.
Coming Up
More Running races near Portland, OR
4th Annual Teal Ribbon Family Fun Walk at the Oregon Zoo to Raise Ovarian Cancer Awareness!
Oregon Zoo, 4001 SW Canyon Rd
2 miles away
Rose City Relays
1 Mile · From $5 · 3301 NE Us Grant Pl
2 miles away
The Portland Grindfest - August 14th @ 6pm at Benson High School!
From $10 · Buckman Field
2 miles away
09/05/25: Lakad for Rights
5K · From $35 · Columbia Park, 4503 N Lombard St.
Less than a mile away
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is the Sam Day 37-Mile Challenge?
- Sam Day 37-Mile Challenge is a running race held in Portland, Oregon on September 1, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Sam Day 37-Mile Challenge?
- Tuesday, September 1, 2026 in Portland, Oregon. Check the event page for exact start times and wave schedules.
- How do I register for the Sam Day 37-Mile Challenge?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Sam Day 37-Mile Challenge
Sep 1, 2026