HRCA Backcountry Wilderness Half Marathon
Oct 31Lone Tree, COHalf Marathon
Also a half marathon, 15 mi from The Bear Chase, registration open
Listed from UltraSignup. Checked Oct 4, 2026.
4 aid stations are already loaded. Add cutoffs, pacing and the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planA 100k, 50 mile, 50k, Half Marathon and the Baby Bear 10k Trail Race at beautiful Bear Creek Lake Park, in Lakewood, CO. An excellent race for first time ultramarathoners and trail runners, runners will experience a variety of challenging terrain and sweeping panoramic views throughout the race.
Registration ends
Feb 27, 2026
Registration closes
Sep 28, 2026
Race day
Oct 4, 2026
100K
Registration after Feb 28
$195
50 Mile
Registration after Feb 28
$175
50K
Registration after Feb 28
$145
Half Marathon Sunday
Registration after Feb 28
$105
10K Sunday
Registration after Feb 28
$70
5K Sunday
Registration after Feb 28
$45
Registration openings and major changes, like a new date or a cancellation.
| Station | Distance | Crew | Drop bags | Cutoff | Supplies |
|---|---|---|---|---|---|
Start / Finish Aid Full aid station and repeated course location; available for drop bags and crew assistance. Restrooms are porta potties. | 0.00 miles | -- | waterTailwind (Endurance Fuel)sodasweet and salty snacks+6 | ||
Homestead Aid Full aid station on the 100K and 50 Mile courses; fluids only on the first lap. Also appears at 6 miles on the Half Marathon course and 11.4 miles on the 50K course. Restrooms are porta potties. | 5.30 miles | -- | waterTailwind (Endurance Fuel)sodasweet and salty snacks+6 | ||
Cattail Creek Aid Full aid station on the ultra courses and appears at 14.9 miles on the 50K and 9.5 miles on the Half Marathon. Restrooms are porta potties. | 8.80 miles | -- | waterTailwind (Endurance Fuel)sodasweet and salty snacks+6 | ||
Mountain View Aid Sunday's 10K aid station; water/Tailwind only. Restrooms are porta potties. | 3.50 miles | -- | waterTailwind |
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
Oct 31Lone Tree, COHalf Marathon
Also a half marathon, 15 mi from The Bear Chase, registration open
Nov 14Louisville, COHalf Marathon, 10K +1
Also a half marathon, 35 mi from The Bear Chase, registration open
Nov 7Littleton, COHalf Marathon, 10K +2
Also a half marathon, 7 mi from The Bear Chase, registration open
Nov 8Colorado Springs, COHalf Marathon, 10K +2
Also a half marathon, 59 mi from The Bear Chase, registration open
Straight-line distance
Oct 31Lone Tree, COHalf Marathon
Nov 7Castle Rock, COMarathon, Half Marathon +1
Nov 7Littleton, COHalf Marathon, 10K +2
Nov 8Colorado Springs, COHalf Marathon, 10K +2
Nov 14Louisville, COHalf Marathon, 10K +1
Nov 21Colorado Springs, CO50K, Half Marathon +1
May 8, 2027Colorado Springs, CO50K, Marathon +4
Aug 7, 2027Winter Park, CO50K, 21K +1
Oct 25Lakewood, CO15K, 5K
Oct 31Lakewood, COBackyard Ultra
Nov 15Golden, CO50K
Jan 9, 2027Sedalia, CO21.6 mi
Dec 5Pine, CO50K, 16 mi +1
Oct 24Bailey, CO12.6 mi, 2 mi
Oct 24Erie, COBackyard Ultra
Nov 7Larkspur, CO6 hr
Feb 6, 2027Nederland, CO30K, 18K
Oct 24Canon City, CO35 mi, 50K +2
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
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Claim this race to manage registration, volunteers, and race day.