Coach Mike O'Brien Memorial 5K St. Patrick's Day Run 2027

The Coach Mike O'Brien Memorial 5K St. Patrick's Day Run is a timed 5K held at Morris Catholic High School in Denville, New Jersey, around St. Patrick's Day. The USATF-certified course is open to experienced runners and beginners alike, with medals awarded in multiple age categories. The run honors Mike O'Brien, who coached cross-country and track at Morris Catholic for 25 years and initiated the original Morris Catholic St. Patrick's Day 5K. Results distinguish alumni and current Morris Catholic students, and local runners participate. BEST Racing Systems manages timing and scoring.