The Bear Chase

Morrison, United States • 3-4 Oct 2026

Event Overview

The Bear Chase Trail Race is a two-day endurance festival held at Bear Creek Lake Park in Lakewood, Colorado. The ultra-distance races (100K, 50 Mile, and 50K) take place on Saturday. The shorter distances (Half Marathon, 10K, and 5K) are held on Sunday.

Course Details

The course is primarily on dirt and single track trails, described as not overly technical and relatively fast for a trail event. Approximately 95% of the race is run on these surfaces. The event features a variety of terrain and panoramic views.

The approximate elevation gain for each distance is:

  • 5K: Information not specified.
  • 10K: 230 ft.
  • Half Marathon: 900 ft.
  • 50K: 1,930 ft.
  • 50 Mile: 3,400 ft.
  • 100K: 4,250 ft.

Additional Information

A portion of the race proceeds benefits the open spaces and trails of Lakewood, as well as partner charities. Visit the organization's website for the most recent information.

Race information

62 mi
100k
50 mi
50 Mile
31 mi
50k
13 mi
Half Marathon
6 mi
10k
3 mi
Visit the organization's website for the most recent information.
Trail runs nearby

Mountain Ridge Trail Race in Highlands Ranch, CO features 21 mile, half marathon, 10 km and 5 km courses on mostly dirt single track with rolling hills and front range views. The event uses cupless aid stations and finishes at Mountain Ridg..

An invitation only endurance trial in Colorado focused on off trail navigation, map and compass skills, and limited aid. The field is capped at 40 and applications open in a short window in January 2026.

Two trail ultras in Buffalo Creek Colorado on May 30, 2026 covering singletrack through pine forest and burn areas. The event offers 50 Mile and 50K options, staffed aid stations, course markings, and a post race festival with awards.

Run along Boulder Reservoir on flat, mostly dirt trail courses with sweeping Rocky Mountain views. Choose from 10K, 3 4 marathon, half, full marathon or relay, with USATF certified courses, a shirt and a finisher medal.