Colorado GMU 4 Pronghorn Hunting
Moffat and Routt counties, northwest Colorado · 467 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 4 is like
Game Management Unit 4 occupies 467 square miles across Moffat and Routt counties in the northwest corner of Colorado. The country rolls across an elevation band spanning 6,200 feet in the low country to 10,800 feet at its highest, with terrain that is 60% gentle slopes, 37% moderate, and 2% steep. The rolling, moderately broken landscape typical of the unit favors pronghorn habitat over much of the ground.
Roughly 41% of the unit—some 191 square miles—sits on National Forest and BLM land generally open to public hunting. Colorado State Trust Land covers an additional 6.3% of the unit, though access depends on enrollment in CPW's Public Access Program and is not guaranteed. Private land comprises the majority at 52%, creating a landscape where hunter access is concentrated on federal holdings. Public ownership totals 47% when combined with these three categories, but only the federal open land offers a reliable base for planning a hunt.
Pronghorn range across 42% of the unit overall, driven primarily by winter-range mapping that covers 21% of the total area. Winter concentration grounds, where pronghorn cluster during the colder months, occupy 9% of the unit. These patterns of winter focus suggest that pronghorn use in this unit follows seasonal distribution tied to elevation and weather, with animals concentrating rather than spreading evenly across their mapped range.
Unit 4 offers five pronghorn seasons, three of which are available to public applicants through the draw. An archery season runs August 15 through September 20 for bucks. A muzzleloader season follows from September 21 to September 29, also for bucks. A single rifle season for bucks runs October 3 to October 11. In addition, the unit holds a private-land-only season from September 19 to October 4 and a Ranching for Wildlife season from August 29 to October 7, neither of which represents a general public-land opportunity. The archery season spans the tail end of the Pre-Rut and into the Primary Rut phase. Muzzleloader runs through the Primary Rut and into the Late Rut, while rifle occurs during the Late Rut and Post-Rut Recovery period. The draw for public-land buck tags in this unit is very hard, with the easiest qualifying hunt reliably requiring 6–9 preference points. A premium buck season here requires considerably more points. Overall hunter pressure on the unit is moderate.
Terrain & elevation
- Elevation
- 6,200–10,800 ft, typically around 7,500 ft
- Steepness
- Moderate — mean slope 9.6°
- Slope breakdown
- 60% gentle · 37% moderate · 2% steep · 0% rugged
- Ground you can count on
- ~191 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 4.
Lower elevations
- Sagebrush76%
- Other cover12%
- Grass and meadow8%
- Aspen3%
- Conifer2%
Mid elevations
- Sagebrush46%
- Aspen44%
- Conifer7%
- Other cover2%
- Grass and meadow1%
Higher elevations
- Aspen48%
- Conifer37%
- Sagebrush13%
- Other cover2%
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 4 is public land a hunter can count on — National Forest and BLM. A further 6% is State Trust Land, which is huntable only where CPW has enrolled it.
- National Forest30%
- BLM11%
- State Trust Land6%
- Unclassified ownership<1%
- Private52%
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 4 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 Range42%the full extent of range CPW maps for pronghorn — near 100% on most units, and not a statement about when pronghorn are present
- Winter Range21%used in winter
- Winter Concentration9%where pronghorn bunch up in winter
Pronghorn seasons & weapons (2026)
| Season | Dates | Tags offered |
|---|---|---|
| Archery | August 15 – September 20 | Buck |
| Muzzleloader | September 21 – September 29 | Buck |
| Rifle | October 3 – October 11 | Buck |
| Private-land only | September 19 – October 4 | Buck |
| Ranching for Wildlife | August 29 – October 7 | 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 70°F, lows around 40°F (mid-elevation normals)
- October — highs around 56°F, lows around 30°F, about 2.4 in of snow (mid-elevation normals)
- November — highs around 42°F, lows around 20°F, about 11.4 in of snow (mid-elevation normals)
GMU 4 pronghorn hunting FAQ
Can an applicant with no preference points draw a pronghorn tag here?
The easiest public-land buck season available to draw reliably requires 6–9 preference points, so a zero-point applicant would not draw through the primary draw in most years. However, the secondary draw held in June is open to any applicant regardless of preference points and awards tags by pure random selection; after the primary draw closes, leftover tags also become available first-come, first-served. Neither of these systems uses or awards preference points.
Which season offers the best chance of success for someone hunting pronghorn here?
Timing depends on hunt goals and rut phase preference. The archery season (August 15–September 20) spans the early part of the Primary Rut and can offer opportunities as bucks move into territory formation. The muzzleloader season (September 21–29) hunts through the peak and early decline of the rut. The rifle season (October 3–11) arrives during the Late Rut and Post-Rut Recovery phase when rut activity has waned. Each weapon carries different harvest dynamics and different draw requirements, so success is not tied to a single season.
How much public ground can a hunter actually count on in this unit?
Roughly 191 square miles of National Forest and BLM land are generally open to public hunting, about 41% of the unit's total area. State Trust Land makes up another 6.3%, though it is huntable only where CPW has enrolled individual parcels in the Public Access Program—which parcels are open is not specified here and requires checking with CPW. The remaining 52% of the unit is private.
How does pronghorn distribution change through the fall season?
Winter range and winter concentration grounds are mapped at 21% and 9% of the unit respectively, indicating that pronghorn do not occupy all available range evenly. Hunters should expect pronghorn to concentrate in predictable winter-range areas as the season advances through October and November, particularly on ground mapped for winter use and winter concentration. Exact timing and degree of concentration vary with weather and snowfall.
What are the typical weather conditions during the pronghorn seasons?
Archery season in August and September begins mild, with highs near 70°F and minimal snowfall, then cools as September closes. Muzzleloader and rifle seasons in late September and early October see highs dropping from the mid-50s to the upper 40s, with snowfall averaging 2.4 inches in October. By late October, conditions turn cold, and if a hunt extends toward November, snowfall averages 11.4 inches that month. The overall trend is steady cooling through the fall.
Is this unit realistic for a hunter with limited public-land access experience?
The unit offers 41% open federal land, a substantial base for public hunting, though access roads, trailheads and private inholdings all govern where a hunter can actually reach the ground. The rolling terrain with mostly gentle and moderate slopes is less punishing than steeper country, but familiarity with map reading and route-finding on public land is still necessary to locate pronghorn effectively. Consultation with local BLM or Forest Service offices about specific access points and conditions is recommended before the 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 — 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.