This Sunday, March 17-( actually St. Patrick's day) Portlander's will kick off the city's running events with Shamrock run! This years event marks the 35th anniversary and is expected to draw more then 35,000 participants.
The Shamrock Run offers chip-timed road race distances at 5 kilometers (3.1 miles), 8 kilometers (4.97 miles) and 15 kilometers (9.3 miles). Shamrock also has a 5 km fitness walk – the Shamrock Stride – and a 1 km (0.6-mile) run/walk for children age 10 and younger known as the "Leprechaun Lap."
The run begins and ends in down town Portland's Waterfront park. If you don't want to be bothered by all the closed streets during this event, then I suggest you stay clear of downtown Portland and upper Terwilliger hills during the race on Sunday.
Sign up is already closed, but you can be a spectator and then plan for next year.
If Sunday's event isn't your first choice you will have dozens of organized runs throughout the year. Oregon and most cities have endless planned runs this year.Here is the official site for current list of most races for the year-Runningtheusa