Colorado GMU 15 Elk Hunting
Routt, Grand and Eagle counties, northwest Colorado · 492 sq mi
Based on the EASIEST unit-wide bull or either-sex hunt code available to adult Colorado residents in the 2026 primary draw — the lowest preference-point tier that drew reliably. Private-land-only and Ranching for Wildlife hunts are excluded because neither is a unit-wide public-land opportunity — NOT because the public cannot draw them. A private-land-only license requires the hunter's own permission to hunt private ground; a Ranching for Wildlife license is valid on the participating ranches enrolled in that program. They are separate systems. Other weapons, seasons and nonresident applicants can require substantially more points. The band is a floor, not a target: even the easiest qualifying hunt here sits in that range.
What hunting GMU 15 is like
GMU 15 spans 492 square miles across Routt, Grand and Eagle counties in Colorado's northwest region, rising from 6,700 feet to 10,800 feet with a typical elevation around 8,800 feet. The terrain is rolling to moderately steep: 42 percent of the unit is gentle, 51 percent moderate, and 8 percent steep, with a mean slope of 12.9 degrees. This elevation and terrain mix supports both summer and winter elk ranges, though in quite different proportions across the unit.
Public hunting ground comprises approximately 65 percent of the unit, or roughly 319 square miles, split among National Forest (51 percent of the unit total), BLM (11 percent), and State Wildlife Areas (2.8 percent). An additional 1.5 percent is Colorado State Trust Land available only where CPW has enrolled it in the Public Access Program. The remaining 33 percent is private land. Public ownership of the unit reaches approximately 66 percent when trust land is included, but only the generally open National Forest, BLM and State Wildlife Area acreage represents ground a hunter can reliably count on.
Summer Range covers 95 percent of the unit, and Summer Concentration marks 17 percent where elk cluster during that season. Winter Range covers 67 percent of the unit, concentrated on 26 percent of the area. Resident Population, the only layer mapping year-round use, covers just 8 percent. This distribution reflects a unit where many elk are migratory: hunters should expect elk presence to shift from broader summer distribution toward winter-range ground as the season advances into late fall, though the timing and extent of that movement varies with weather and snow.
The unit offers seven seasons total, six open to public application. Archery runs September 2 to September 30 for either-sex elk. Muzzleloader runs September 12 to September 20 for either-sex or antlerless. Four rifle seasons follow: first rifle October 14 to October 18 (either-sex or antlerless), second rifle October 24 to November 1 (antlerless), third rifle November 7 to November 15 (antlerless), and fourth rifle November 18 to November 22 (either-sex or antlerless). Draw difficulty is easy, often zero points, describing the easiest unit-wide bull or either-sex code for an adult Colorado resident. Hunter pressure is extreme.
Terrain & elevation
- Elevation
- 6,700–10,800 ft, typically around 8,800 ft
- Steepness
- Moderate — mean slope 12.9°
- Slope breakdown
- 42% gentle · 51% moderate · 8% steep · 0% rugged
- Ground you can count on
- ~319 sq mi, plus ~7 sq mi of State Trust Land where access depends on enrollment
Land & access
About 65% of GMU 15 is public land a hunter can count on — National Forest, BLM and State Wildlife Areas. A further 1% is State Trust Land, which is huntable only where CPW has enrolled it.
- National Forest51%
- BLM11%
- State Wildlife Area3%
- State Trust Land1%
- Unclassified ownership<1%
- Private33%
Colorado State Trust Land is open to public hunting only where it is enrolled in CPW's Public Access Program. Check current enrollment before planning around it.
Where elk live in the unit
Colorado Parks & Wildlife maps elk seasonal ranges statewide. This is how much of GMU 15 each range covers — the single best clue to whether elk are here in September, in November, or only passing through. The layers overlap, so they do not add to 100%.
- Overall Range100%the full extent of range CPW maps for elk — near 100% on most units, and not a statement about when elk are present
- Summer Range95%used in summer
- Winter Range67%used in winter
- Winter Concentration26%where elk bunch up in winter
- Summer Concentration17%where elk bunch up in summer
- Resident Population8%the only layer that means year-round use
Elk seasons & weapons (2026)
| Season | Dates | Tags offered |
|---|---|---|
| Archery | September 2 – September 30 | Either-sex |
| Muzzleloader | September 12 – September 20 | Either-sex, Antlerless |
| 1st Rifle | October 14 – October 18 | Either-sex, Antlerless |
| 2nd Rifle | October 24 – November 1 | Antlerless |
| 3rd Rifle | November 7 – November 15 | Antlerless |
| 4th Rifle | November 18 – November 22 | Either-sex, Antlerless |
| Private-land only | September 1 – January 31 | Either-sex, Antlerless |
Dates span every hunt code of that type in this unit and can differ by code. Confirm the current brochure with Colorado Parks & Wildlife before applying.
Fall weather
- September — highs around 65°F, lows around 34°F, about 0.1 in of snow (mid-elevation normals)
- October — highs around 53°F, lows around 25°F, about 3.8 in of snow (mid-elevation normals)
- November — highs around 39°F, lows around 14°F, about 12.5 in of snow (mid-elevation normals)
GMU 15 elk hunting FAQ
How much public ground can a hunter actually get on?
About 65 percent of the unit, roughly 319 square miles, is generally open to public hunting on National Forest, BLM, and State Wildlife Area ground. An additional 1.5 percent of State Trust Land may be huntable where CPW has enrolled parcels in the Public Access Program, but enrollment status varies by parcel and a hunter must verify current access before planning to hunt.
Is this unit realistic for someone with no preference points?
Yes. Draw difficulty for this unit is easy, often zero points, and that describes the easiest unit-wide bull or either-sex code available to adult Colorado residents. Other seasons, weapons and nonresident applicants may require substantially more points, but applicants with no points have a practical path to drawing tags here.
When should a hunter expect to find elk concentrated on winter range?
Winter Range covers 67 percent of the unit, with 26 percent marked as Winter Concentration where elk cluster. As the season advances from September into November, expect elk to shift toward winter-range ground, though the timing and extent of that movement depend on weather and snow conditions rather than calendar dates alone. Earlier seasons will encounter a broader distribution.
What is the rut timing during the public seasons here?
The archery season (September 2–30) spans rut onset into the primary rut. Muzzleloader (September 12–20) occurs during the primary rut. The first rifle season (October 14–18) falls in the late rut and early post-rut period. Later rifle seasons occur during post-rut recovery and migration transition as the fall progresses.
How does weather change across the hunting season?
September highs average 65°F and lows 34°F with minimal snowfall. October cools to highs around 52°F and lows 25°F, with average snowfall around 3.8 inches per month. November is significantly colder, with highs near 39°F, lows around 14°F, and average snowfall around 12.5 inches, so hunters should expect a steady cooling trend and increasing snow throughout the fall.
Is the terrain manageable for a hunter on foot?
The unit's rolling to moderately steep terrain—42 percent gentle and 51 percent moderate—is generally hikeable, though 8 percent is steep ground that will challenge foot hunters. The 6,700 to 10,800-foot elevation span means higher-elevation sections will be steeper and more demanding; lower-elevation areas more accessible. Individual hunters' fitness and the specific drainage will determine where they can realistically hunt.
Data sources & methodology
- Colorado Parks & Wildlife — Big Game hunting — seasons, weapons, hunt codes and license types
- CPW — Primary Draw rules — how preference points and the hybrid draw work
- CPW — Elk statistics, draw recap and Drawn Out At reports — the point levels behind the draw-difficulty bands
- CPW — Secondary Draw — licenses remaining after the primary draw
- CPW — Maps and GIS (Species Activity Mapping) — elk seasonal range
- CPW — State Trust Land Finder — which State Trust acreage is enrolled and open to public hunting
- Federal and state land-ownership datasets — land ownership and access
- NOAA climate normals — fall weather
Draw difficulty is a qualitative band, not published odds — the note under the summary above states exactly which hunt code it describes. Land shares are separate, non-overlapping categories: publicly owned is not the same as open to hunting, and State Trust Land is huntable only where CPW has enrolled it. Unit data last updated August 28, 2026.