This event is in the past.It took place on March 14, 2026 at Old Courthouse Square.
TrackTrackLace up your green and join a festive 5K that feels more like a party than a race. The Little Leprechaun Loop keeps kids busy while adults chase PRs on a flat downtown course, then everyone reconvenes for Irish dancers, a costume contest, and plenty of post-race cheer.
family-friendly
costume contest
Irish dancers
downtown Santa Rosa
Tips
🍀kids can join the Little Leprechaun Loop
🎭costume contest at 11:30am — come dressed up
🏃flat, forgiving course through downtown
St. Patrick’s Day 5K
Santa Rosa
TrackTrackLace up your green and join a festive 5K that feels more like a party than a race. The Little Leprechaun Loop keeps kids busy while adults chase PRs on a flat downtown course, then everyone reconvenes for Irish dancers, a costume contest, and plenty of post-race cheer.
family-friendly
costume contest
Irish dancers
downtown Santa Rosa
Tips
🍀kids can join the Little Leprechaun Loop
🎭costume contest at 11:30am — come dressed up
🏃flat, forgiving course through downtown
Make it an outing
Add nearby spots before or after your event