Sundae Runday
Sundae Runday is a running race on August 16, 2026 in Seattle, WA, with entry fees from $10 to $50.
- Date
- August 16, 2026 (24 days to go)
- Price
- $10–$50
- Sport
- Running
From the Organizer
Join us for the 6th annual Sundae Runday, where we combine our love of running with a love for ice cream! Finish your 10K, 5K run, or 2 mile (plus a little bit) walk with a delicious ice cream sundae with all the toppings!
Race Day Schedule:
8:30AM – Registration and Packet Pickup Opens
9:00AM – Costume Contest
9:15AM – Kids Dash
9:30AM – 10K Start
9:45AM – 5K and 2 Mile start
10:00AM - Ice cream time!
10:30am - Awards
Sundae FUNday Festivities:
- Post-race ice cream treats for all, including your four-legged friends!
- Finisher's item, it will be something fun, and functional!
- Water and whipped cream at the banana split halfway mark!
- Chance to beat the ice cream
- Free Event Photos
- Kid’s Tent with Games & Crafts
- Kids Dash with finisher items and ice cream
- Costume Contest - put on your Sundae best!
- Traffic free course through Seward Park and the shores of Lake Washington.
- Stroller friendly event
- Furry Friends: Dogs are welcome to run with us! Check the box at registration to pre-register your pup and guarantee a doggy treat in the Sundae line!
Registration Info:
10K
January 1 - 9: $35
Jan 10 - May 16: $45
May 17 - July 16: $50
July 17 - August 15: $55
Day of Event Registration - $60
5K & 2 Mile Walk
January 1 - 9: $30
Jan 10 - May 16: $40
May 17 - July 16: $45
July 17 -August 15: $50
Day of Event Registration - $55
- Kids 15 and under - $25 (includes shirt and ice cream)
- Kids dash - $10 - (includes ice cream and finisher's ribbon)
- Register by July 15 to guarantee your shirt size.
Teams of 6 or more get an automatic discount. Once the 6th person signs the first 5 participants get a refund!
Volunteer with us and get a race shirt, and a trip through the sundae toppings bar without all that pesky running!
Benefiting Let Me Run - Let Me Run is building a new generation of men by teaching boys to be their best selves through a character development program powered by running.
Events
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
78°
Typical Low
58°
Chance of Rain
13%
Based on US Climate Normals data from Seattle Boeing Fld, 3 mi from the venue.
Host City
About Seattle, WA
Population
741,440
as of 2023
City Elevation
40 ft
Nearest Airport
SEA
Seattle–Tacoma International Airport · 10 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
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Sundae Runday, put it on the calendar, and turn “someday” into a start date.
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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.
Coming Up
More Running races near Seattle, WA
Cougar Mountain Trail Run Series (August)
5K · Marathon · From $40 · Sky Country Trailhead
5 miles away
Run of Hope Seattle
2 Mile / 3K · 5K · From $30 · 5900 Lake Washington Boulevard S
Less than a mile away
NIGHT NATION RUN - SEATTLE
5K · From $39.99 · LUMEN FIELD
4 miles away
Pumpkin Spice Run
1 Mile · 5K · 10K · From $12 · 5902 Lake Washington Blvd South
Less than a mile away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to Seattle than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to SeattleFrequently Asked Questions (FAQs)
What is the Sundae Runday?+
When and where is the Sundae Runday?+
How do I register for the Sundae Runday?+
Sundae Runday
Aug 16, 2026