Sundae Runday

Race Overview: A race coming up on 2026-08-16 in Seattle, WA. Get all the nerdy details below or follow the sign up links to secure your spot today!
Sign Up Here
Nerdrunner Verified
Race data last checked: 2026-03-20

Race Overview:

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.

Sign Up Here