Colorado GMU 27 Pronghorn Hunting
Grand and Routt counties, northwest Colorado · 197 sq mi
Based on the EASIEST unit-wide buck 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 27 is like
Colorado GMU 27 spans 197 square miles across northwestern Colorado, covering portions of Grand and Routt counties. The unit's terrain is rolling, with some steeper breaks, ranging from 7,000 feet at its lowest points to 10,800 feet at its highest, with typical elevations around 8,600 feet. The landscape consists of 61% gentle terrain, 36% moderate slopes, and 3% steep ground, making it accessible to hunters on foot across most of the unit.
About 41% of the unit, roughly 80 square miles, is National Forest and BLM land open to public hunting. An additional 15% (approximately 29 square miles) consists of Colorado State Trust Land, where hunting access depends on CPW's Public Access Program enrollment—not all parcels are necessarily open. Private land comprises 45% of the unit. The public-ownership split means hunters must plan routes carefully, as private holdings are interspersed throughout the landscape.
Pronghorn range across 59% of the unit overall, with Migration Corridors covering 22%. Winter Range extends across 9% of the unit, with 4% designated as Winter Concentration—areas where pronghorn cluster seasonally. This mapping indicates that while pronghorn occupy significant portions of the unit, they concentrate in specific areas, particularly as the fall advances and the season cools.
The unit offers four seasons: Archery from August 15–September 20, Muzzleloader from September 21–September 29, and Rifle from October 3–October 11, all open to public hunters on general drawing. A fourth season, September 26–October 18, is private-land-only. Archery and Muzzleloader seasons fall during the pre-rut and primary rut phases, while the Rifle season occurs during the late rut and post-rut recovery period. September temperatures range from highs near 66°F to lows near 35°F with minimal snowfall, while October brings highs around 53°F, lows near 25°F, and average snowfall of 3.6 inches. The unit draws moderate hunter pressure overall.
Terrain & elevation
- Elevation
- 7,000–10,800 ft, typically around 8,600 ft
- Steepness
- Moderate — mean slope 9.8°
- Slope breakdown
- 61% gentle · 36% moderate · 3% steep · 1% rugged
- Ground you can count on
- ~80 sq mi, plus ~29 sq mi of State Trust Land where access depends on enrollment
Habitat & cover
What actually grows here, by elevation. Each band adds to 100% on its own — these are shares of that band, not of GMU 27.
Lower elevations
- Sagebrush72%
- Other cover12%
- Riparian10%
- Conifer4%
- Aspen2%
- Grass and meadow2%
Mid elevations
- Sagebrush48%
- Aspen20%
- Conifer16%
- Grass and meadow8%
- Riparian6%
- Other cover2%
Higher elevations
- Conifer55%
- Sagebrush16%
- Grass and meadow15%
- Aspen9%
- Riparian4%
Cover classes from the USGS National Land Cover Database, split into elevation bands. “Other cover” is the remainder of the classification — bare ground, water, agriculture and developed land — and is left unnamed rather than guessed at.
Land & access
About 41% of GMU 27 is public land a hunter can count on — National Forest and BLM. A further 15% is State Trust Land, which is huntable only where CPW has enrolled it.
- National Forest34%
- BLM6%
- State Wildlife Area<1%
- State Trust Land15%
- Private45%
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 pronghorn live in the unit
Colorado Parks & Wildlife maps pronghorn seasonal ranges statewide. This is how much of GMU 27 each range covers — the single best clue to whether pronghorn are here in September, in November, or only passing through. The layers overlap, so they do not add to 100%.
- Overall Range59%the full extent of range CPW maps for pronghorn — near 100% on most units, and not a statement about when pronghorn are present
- Migration Corridors22%movement between ranges, not residence
- Winter Range9%used in winter
- Winter Concentration4%where pronghorn bunch up in winter
Pronghorn seasons & weapons (2026)
| Season | Dates | Tags offered |
|---|---|---|
| Archery | August 15 – September 20 | Doe, Buck |
| Muzzleloader | September 21 – September 29 | Doe, Buck |
| Rifle | October 3 – October 11 | Doe, Buck |
| Private-land only | September 26 – October 18 | Doe, Buck |
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 66°F, lows around 35°F (mid-elevation normals)
- October — highs around 53°F, lows around 25°F, about 3.6 in of snow (mid-elevation normals)
- November — highs around 40°F, lows around 15°F, about 12.1 in of snow (mid-elevation normals)
GMU 27 pronghorn hunting FAQ
How much ground can a public-land hunter actually access in this unit?
Roughly 41% of the unit—about 80 square miles of National Forest and BLM—is open to public hunting. Another 15% consists of State Trust Land, but access there depends on CPW enrollment; hunters must verify which parcels are enrolled before planning to hunt. Private land makes up the remaining 45%, which is interspersed throughout the unit and will constrain routing.
Is archery over-the-counter or do I need to draw?
This unit's archery season is limited and entered through the draw system. Pronghorn archery licenses are over-the-counter in some Colorado units, but this unit's is not one of them. Plan accordingly and apply through the primary or secondary draw.
Which season fits best for hunters with no preference points?
The easiest qualifying buck or either-sex hunt code in the 2026 primary draw requires 1–2 preference points, meaning applicants with zero points are not reliably in the draw band, though the secondary draw (June) and leftover list remain open to anyone regardless of points. Hunters without preference points should also consider those alternative routes.
Do pronghorn stay in this unit through the fall or do they migrate out?
Migration Corridors are mapped across 22% of the unit, indicating movement through the landscape, but Winter Range is present at 9% with a 4% Winter Concentration zone. This means pronghorn do shift across the unit through the season, but they do not abandon it; expect them to concentrate more tightly as the fall advances and temperatures drop.
What should I expect from the weather in October when the rifle season opens?
October brings a significant cooling trend, with highs around 53°F and lows near 25°F, along with average snowfall of 3.6 inches. Conditions can range from cool and dry early in the month to snow on the ground by season's end, so prepare for variable and sometimes difficult travel.
Is the terrain steep enough to be difficult for a hunter on foot?
Most of the unit is walkable; 61% is gentle terrain and 36% is moderate slope. Only 3% of the unit is steep and 1% is rugged, so foot traffic and glassing are both realistic across the majority of the ground, though breaks in elevation will still require effort to navigate.
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 — Pronghorn 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
- USGS / MRLC — National Land Cover Database — habitat and cover classes by elevation band
- CPW — Maps and GIS (Species Activity Mapping) — pronghorn seasonal range
- CPW — State Trust Land Finder — which State Trust acreage is enrolled and open to public hunting
- USGS PAD-US — Protected Areas Database of the United States — land ownership and access
- Daymet daily climate, 1991–2020 (Oak Ridge National Laboratory) — 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 September 24, 2026.