Thousands of green-clad runners filled Portland's Waterfront Park Sunday for the 39th annual Adidas Shamrock Run. The event has been called opening day for the running season and is the city's largest running event. (KATU photo taken 3/19/2017 by Tristan Fortsch)
A group of people dressed in colorful costumes, including green outfits and rainbow socks, are participating in a running event, with a child in the foreground wearing a green outfit with a number bib.
A group of people dressed in colorful costumes, including green outfits and rainbow socks, are participating in a running event, with a child in the foreground wearing a green outfit with a number bib.