Colorado GMU 55 Pronghorn Hunting
Gunnison County, southwest Colorado · 886 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 55 is like
Unit 55 spans 886 square miles in the Gunnison County highlands, ranging from 7,700 feet to 14,200 feet in elevation with a typical midpoint around 10,400 feet. The terrain is rolling to moderately steep: 29 percent of the unit is gentle, 50 percent moderate, 19 percent steep, and 2 percent rugged. This is high-country pronghorn habitat, and the elevation and terrain require a hunter capable of sustained movement at altitude.
About 89 percent of the unit—roughly 791 square miles—is open to public hunting, nearly all of it United States Forest Service land with smaller shares managed by the Bureau of Land Management and State Wildlife Areas. The remaining 11 percent is private ground. The dominant public ownership means a hunter can access the broad majority of the unit without seeking permission, though roads, trailheads, and seasonal restrictions will govern the specific routes available on the ground.
Pronghorn in Unit 55 are mapped across 6 percent of the unit overall. Winter Range covers 4 percent, with a Winter Concentration layer marking 1 percent of the unit as clustering ground. The Winter Range and Concentration layers indicate where pronghorn are expected to gather as the fall advances and conditions cool, but the mapping does not specify the location of that ground or guarantee uniform distribution elsewhere. A hunter should expect pronghorn to concentrate on winter ground as the season progresses into October and November, with terrain and weather shaping their exact distribution throughout the draw period.
Unit 55 offers one archery season for bucks, running August 15 through September 20. This window spans the Pre-Rut and Primary Rut phases of pronghorn behavior. September temperatures at mid elevation drop from highs around 62 degrees Fahrenheit to lows in the mid-30s, with minimal snowfall. October brings highs near 51 degrees, lows around 25 degrees, and roughly 3 inches of snow. By November, conditions tighten: highs fall to near 39 degrees, lows to 14 degrees, and snowfall averages 11.5 inches per month. The draw for this hunt is very hard, with the easiest qualifying unit-wide code requiring 6–9 preference points. Hunter pressure here is low.
Terrain & elevation
- Elevation
- 7,700–14,200 ft, typically around 10,400 ft
- Steepness
- Steep — mean slope 16.8°
- Slope breakdown
- 29% gentle · 50% moderate · 19% steep · 2% rugged
- Ground you can count on
- ~791 sq mi
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 55.
Lower elevations
- Sagebrush51%
- Conifer20%
- Aspen13%
- Riparian7%
- Other cover6%
- Grass and meadow2%
Mid elevations
- Conifer67%
- Aspen14%
- Sagebrush13%
- Riparian5%
- Grass and meadow1%
Higher elevations
- Conifer50%
- Sagebrush31%
- Other cover8%
- Grass and meadow8%
- Riparian3%
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 89% of GMU 55 is public land a hunter can count on — National Forest, BLM and State Wildlife Areas.
- National Forest82%
- BLM7%
- State Wildlife Area<1%
- State Trust Land<1%
- Unclassified ownership<1%
- Private11%
Where pronghorn live in the unit
Colorado Parks & Wildlife maps pronghorn seasonal ranges statewide. This is how much of GMU 55 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 Range6%the full extent of range CPW maps for pronghorn — near 100% on most units, and not a statement about when pronghorn are present
- Winter Range4%used in winter
- Winter Concentration1%where pronghorn bunch up in winter
Pronghorn seasons & weapons (2026)
| Season | Dates | Tags offered |
|---|---|---|
| Archery | August 15 – September 20 | 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 62°F, lows around 35°F, about 0.1 in of snow (mid-elevation normals)
- October — highs around 51°F, lows around 25°F, about 2.9 in of snow (mid-elevation normals)
- November — highs around 39°F, lows around 14°F, about 11.5 in of snow (mid-elevation normals)
GMU 55 pronghorn hunting FAQ
How much of Unit 55 can a public-land hunter actually access?
Roughly 89 percent of the 886-square-mile unit is open to public hunting across United States Forest Service, Bureau of Land Management, and State Wildlife Areas. The remaining 11 percent is private. Public ownership does not guarantee easy entry—roads, trailheads, and seasonal closures still govern what ground is reachable—but the high share of open land means a hunter is not dependent on private-land permission to hunt the unit.
Is this a realistic draw for someone with no preference points?
No. The easiest archery bull code available to unit-wide public-land hunters requires 6–9 preference points in the primary draw. An applicant without points cannot draw this hunt reliably through the standard process, though the secondary draw in June and the leftover list after it remain open to anyone with no points.
Where are pronghorn concentrated as the season progresses?
Winter Range covers 4 percent of the unit, with a Winter Concentration layer marking 1 percent where pronghorn cluster. The mapping does not specify where this ground sits, only that it exists. As fall cools from September into November, hunters should expect pronghorn to shift toward that winter ground, though the exact timing and distribution will vary with weather and snow.
Is the archery season early enough to hunt the pre-rut, or does it focus on the rut itself?
The August 15 to September 20 archery window covers both the Pre-Rut and Primary Rut phases. Early in the season, pronghorn are in territory formation; by late August and early September, they enter the Primary Rut and remain there through mid-September. The rut window overlaps most of the available hunting time.
How much snow and cold should a hunter expect during the season?
September is mild, with highs near 62 degrees Fahrenheit and snowfall averaging 0.1 inches. October cools significantly: highs fall to 51 degrees, lows to 25 degrees, and snowfall rises to 2.9 inches. By November, conditions are winter-like, with highs near 39 degrees and 11.5 inches of average monthly snowfall. A hunter pursuing into October should be prepared for increasing cold and snow.
Does the rolling-to-moderately-steep terrain here require specialized fitness or technique?
The unit sits at 7,700 to 14,200 feet elevation with half the ground in moderate terrain and roughly one-fifth steep. A hunter must be comfortable moving at altitude and on uneven ground. While the unit is not predominantly rugged, the elevation gain and sustained slope across most of the country demand solid endurance and pacing strategies.
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.