7 events in Boulder County, Colorado

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

• South Boulder Creek parkrun [parkrun.us]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Every Saturday at 9:00 AM

  Description

  parkrun is such a simple concept: turn up every Saturday and volunteer, walk, jog or run 5k.

  5k parkrun Run Walk

  East Boulder Community Center, 5660 Sioux Dr, Boulder County, Colorado, 80303, United States
  OpenStreetMap Google Maps
• Emerge 5K [riseagainstsuicide.org] [Register at runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Sun, May 03, 2026 at 8:00 AM

  Description

  ▼ Show more Show less

  Join Rise Against Suicide's 17th annual Emerge 5K Walk/Run- a free, family-friendly walk/run supporting youth mental health and suicide prevention in our community.

  This uplifting community gathering...

  Join Rise Against Suicide's 17th annual Emerge 5K Walk/Run- a free, family-friendly walk/run supporting youth mental health and suicide prevention in our community.

  This uplifting community gathering features a dedicated kids zone, an area for connection and reflection, inspiring speakers, local vendors, live music by Kutandara, and local food trucks. Along the course, butterfly signs will honor and remember the stories of those we love and those we’ve lost.

  Emerge brings our community together in hope, remembrance, awareness, and collective strength - reminding every person that they are not alone.

  WAYS TO PARTICIPATE

  • Walk or Run

  • Start a Team & Fundraise Together

  • Honor a Story with a Butterfly Sign

  • Become a Sponsor

  • Donate to our Mission

  EVENT SCHEDULE

  • 8:00 AM Registration & Arrival

  • 9:00 AM 5K Start

  • 11:00 AM Event Concludes

  WHAT YOUR SUPPORT MEANS

  Rise Against Suicide has funded more than 20,000 free therapy sessions and supported over 2,000 local youth at risk of suicide. Our goal is to raise $175,000 to continue to remove barriers and provide timely access to funded therapeutic support for youth 19 and under in our community.

  BRING YOUR PEOPLE. BRING YOUR PURPOSE. TOGETHER WE RISE!

  5k Run Walk

  5565 51st St, Boulder County, Colorado, 80301, United States
  OpenStreetMap Google Maps
• Run Rocky Trails Camp [runningwildevents.com] [Register at ultrasignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Thu, Jul 16, 2026 at 4:00 PM

  Run Trail

  Big Owl Road, Boulder County, Colorado, 80510, United States
  OpenStreetMap Google Maps
• Eldorado Run for the Cure [runsignup.com]
  • Subscribe to My Calendar (sign in required)

  • ---

  • Download single event

  Fri, Aug 07, 2026 at 6:00 PM

  Description

  ▼ Show more Show less

  Founded in 1979, the Eldorado Run for the Cure is the longest operating charitable footrace in the State of Colorado. All proceeds from the annual four-mile run benefit the Colorado Cancer...

  Founded in 1979, the Eldorado Run for the Cure is the longest operating charitable footrace in the State of Colorado. All proceeds from the annual four-mile run benefit the Colorado Cancer Foundation's life saving work, from funding oncology research at the University of Colorado's (CU) Division of Medical Oncology to aiding patients at the CU Hospital in Aurora, CO.

  Each year, the run has developed and grown, and in 2023 a new course was introduced, routing participants along the scenic South Boulder Creek, which winds through the high cliff walls of historic Eldorado Canyon.

  4 Miles Run

  294 Artesian Drive, Boulder County, Colorado, 80025, United States
  OpenStreetMap Google Maps