Name: Coach Mike O'Brien Memorial 5K St. Patrick's Day Run
Start: 2026-03-14
End: 2026-03-14
Location: Denville, New Jersey

About the Event

Join us as we bring back our 5K St. Patrick's Day Run for the third time in memory of Coach Mike O'Brien on our USATF-Certified course (Course certification # is NJ24014JLW).

Mike O’Brien was a beloved cross-country and track coach at Morris Catholic for 25 years. Additionally, he started the original Morris Catholic St. Patrick’s day 5k back in 2012. He really enjoyed the MC 5K and seeing/catching up with all the alumni as well as local runners that came to run. We are so glad to be able to bring this race back again in his honor!

Get out into the fresh air and join us on Saturday March 14, 2026 at 9 am at Morris Catholic High School in Denville NJ. Note: we welcome seasoned runners and will award medals in multiple age groups, but no experience is necessary. If you are a novice runner or have not yet started running, consider trying this "couch potato to runner program: https://www.halhigdon.com/training-programs/5k-training/novice-5k/

The race proceeds will benefit the Morris Catholic High School scholarship and athletic programs as well as the Denville Public Assistance Fund!

Did you know that Morris Catholic is a co-educational college preparatory school in Northern NJ founded in 1957? Morris Catholic was designed to serve students in Morris County from a perspective of Catholic values. With an average enrollment under 500 students, Morris Catholic is considered to be the right size for a student who wants to find a community that is authentically caring and lands students in the best colleges in the country. One of Morris Catholic’s goals is to keep its tuition within reach of all families. Therefore, it relies on various fund raising activities such as this race, to enhance the students’ high school experience and to provide scholarships to those who require financial assistance.

As Morris Catholic is located in Denville, NJ, it is only fitting that the proceeds of the race are shared with the Denville Public Assistance Fund, to give back to this wonderful community!

A good run for a good cause? Let's do it!

May the luck of the Irish give us a sunny day; but the race runs on Rain or Shine!

Races Offered

5K

Mar 14, 2026

straighten

Distance — 5K

terrain

Type — Road running

timer

73 days remaining

Weather Overview

These values represent the 3-year monthly averages for March in Denville.

Temp (°C)

Feels Like (°C)

thermostat 0.9° / 10.5°

wb_sunny -4.2° / 6.2°

Wind (km/h)

Humidity (%)

air 14.1 /

water_drop 66.0%

Temp (°C)

Feels Like (°C)

Wind (km/h)

Humidity (%)

thermostat 0.9° / 10.5°

wb_sunny -4.2° / 6.2°

air 14.1 km/h

water_drop 66.0%

About Denville

Denville Township is a township in Morris County, in the northern portion of the U.S. state of New Jersey. It is a commuter town of New York City in the New York metropolitan area, located 35 miles (56 km) west of Manhattan. As of the 2020 United States census, the township's population was 17,107, its highest decennial count ever and an increase of 472 (+2.8%) from the 2010 census count of 16,635, which in turn had reflected an increase of 811 (+5.1%) from the 15,824 counted at the 2000 census.