A pair of undies seen proudly displayed during Cupids Undie Run in South Lake Union
A pair of undies proudly displayed during Cupid's Undie Run in South Lake Union. Alex Garland

Sponsored
The Stranger has last-minute discounts to PNB, ACT Theatre, Neumos, and On The Boards this weekend. Grab tickets before they're gone!

On a sunny Saturday afternoon with temperatures in the mid 50s, nearly 200 runners gathered at Art Marble 21 in South Lake Union for the 2016 Cupid's Undie Run to raise money for the Children's Tumor Foundation (CTF). In 2015, CTF raised $3.5 million during the undie run for research to end neurofibromatosis, and this year they were hoping to raise $5 million. The run occurred in 36 cities across the country and three cities in Australia.

Undie runners begin the run in Lake Union Park
Undie runners begin the run in Lake Union Park. Alex Garland

Even this guy on crutches made an effort to run in his undies
Even this guy on crutches made an effort to run in his undies. Alex Garland

Hundreds of runners signed up to race in their undies in South Lake Union
Hundreds of runners signed up to race in their undies. Alex Garland

Runners pass new constrution and the Space Needle in the same stride
Runners passing new South Lake Union construction and, in the far distance, the Space Needle. Alex Garland

Runners wear their bedroom best in a race to cure NF
Great socks. Alex Garland

All running styles were accepted but organizers asked for no pasties or thongs
All running styles were accepted, but organizers asked for no pasties or thongs. Alex Garland

Runners who raised the most amount of money were given prizes from bathrobes to backpacks
Runners who raised the most amount of money were given prizes from bathrobes to backpacks. Alex Garland

Even a dog or two made it to the run, some going all nude
Even a dog or two made it, some going all nude. Alex Garland