WATCH: Dog waves 'Boston Strong' flag for marathon runners every year since 2015

The goodest boy.

April 15, 2019

BOSTON, Mass. (KYKY) — Since 2015, the Boston Marathon has been attended by a very, very good boy. 

Spencer is a golden retriever who has been supporting runners of the annual marathon through rain or shine. He went viral last year when his owner Rich Powers shared a video of him out in the cold, rainy weather still holding his flags that said "Boston Strong." 

They were stationed near mile-marker two again this year, hoping to push the runners to continue on their 26.2-mile run. 

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