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3 running events in Denville, New Jersey

From big races to Saturday morning group runs—find running events and connect with the local endurance sports community.

  • Coach Mike O'Brien Memorial 5K St. Patrick's Day Run [runsignup.com]

    Sat, Mar 14, 2026 at 9:00 AM

    Description

    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...

    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/

    Keep in mind that we have a limited number of dri-fit t-shirts that we will distribute to the first 250 runners to register. Don't miss out! Register early!!

    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!

    5k Run

    Denville, New Jersey, 07834, United States
    OpenStreetMap Google Maps
  • Sixth Annual Rock Ridge Run for the Golden Shillelagh 5K [runsignup.com]

    Sat, Mar 21, 2026 at 9:30 AM

    Description

    Legend has it that before the time of Elizabeth Wetmore and John Cook, there was the Leprechaun of the Lake. The Leprechaun has only been seen during the 3rd week of March in the woods surrounding...

    Legend has it that before the time of Elizabeth Wetmore and John Cook, there was the Leprechaun of the Lake. The Leprechaun has only been seen during the 3rd week of March in the woods surrounding what is now known as Rock Ridge. He is known to carry a "Golden Shillelagh" which has only been seen by a few lucky Rock Ridge residents while they were running at high speeds in the woods now known as Muriel Hepner Park. Those residents were Dan Kane (the founder of the race)and the previous winners: Ariana Bauer, Brian Christ, Catherine Borkowski, Graydon Kolk(3x), Molly Gahagan, Bryan Coward, Austin Coward and Wylie Kolk (it's a family affair).

    Come try and capture our modern day version of this Golden Shillelagh by competing in 5K race/walk. The winners names will be etched on the Golden Shillelagh which will be proudly displayed in the clubhouse for years to come.

    Here is the path that that the Leprechaun of the Lake has taken and will serve as the course for this year's race https://www.plotaroute.com/route/1455609

    If you cannot find the leprechaun or win The Golden Shillelagh, you can still reminisce about your efforts/tall tales over a pint or a root beer at the RRCC St. Patrick's Day Celebration. (ALL runners that sign up will receive a lucky medal). The signing and presentation of the Golden Shillelagh will occur each year at the RRCC St. Patrick's Day Celebration.

    Be sure not to miss the 2026 Run for the Golden Shillelagh and the RRCC St. Patrick's Day Celebration. Slainte!

    3.1 Miles 5k Run Walk

    55 Entrance Way, Denville, New Jersey, 07834, United States
    OpenStreetMap Google Maps
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