Colorado GMU 128 Elk Hunting
Huerfano, Las Animas, Otero and Pueblo counties, southeast Colorado · 1,210 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 128 is like
Colorado Game Management Unit 128 covers 1,210 square miles across Huerfano, Las Animas, Otero and Pueblo counties in the southeastern region of the state. The unit is predominantly gentle and rolling in character, with elevations ranging from 4,300 feet at the low end to 6,400 feet at the high, with typical terrain around 5,100 feet. Terrain is classified as 96 percent gentle and 3 percent moderate by area, with steep slopes composing only 1 percent of the unit.
Public hunting ground in Unit 128 is limited. Approximately 3 percent of the unit, or 37 square miles, is generally open to public hunting on BLM and State Wildlife Areas. An additional 12 percent, or 141 square miles, is Colorado State Trust Land, where hunting access depends on enrollment in CPW's Public Access Program. The remaining 85 percent of the unit is privately owned. This public-ownership split means that despite the relatively gentle terrain, legal access is the primary constraint on where a hunter can operate.
Elk occupy the unit year-round across approximately 41 percent of it, according to CPW's Resident Population mapping. The unit's Overall Range layer, which extends across 44 percent of the mapped area, represents the broader extent of potential elk habitat but does not indicate year-round presence. Seasonal range mapping shows Summer Range covering only 1 percent of the unit with no concentrated-use area marked. Because Resident Population is substantial, the absence of a large mapped Winter Range does not indicate that elk migrate away; that ground is already counted within the year-round range. Hunters should expect to find elk present throughout the fall, though distribution can shift with weather and snow.
Unit 128 offers two public elk seasons. The Muzzleloader season runs September 12 through September 20 and is open to either-sex hunting. The Late Rifle season spans September 1 through January 31 and is antlerless-only. The Muzzleloader season coincides with the primary rut phase. September temperatures at mid-elevation average highs near 82 degrees Fahrenheit and lows near 50 degrees, with negligible snowfall. October brings cooling, with highs around 69 degrees and lows near 37 degrees, along with approximately 1.1 inches of monthly snowfall. By November, highs drop to around 57 degrees, lows to near 27 degrees, and snowfall increases to 0.7 inches monthly. The draw for this unit is easy, with the simplest unit-wide either-sex code for adult Colorado residents often drawing at zero preference points.
Terrain & elevation
- Elevation
- 4,300–6,400 ft, typically around 5,100 ft
- Steepness
- Gentle — mean slope 2.6°
- Slope breakdown
- 96% gentle · 3% moderate · 1% steep · 0% rugged
- Ground you can count on
- ~37 sq mi, plus ~141 sq mi of State Trust Land where access depends on enrollment
Land & access
About 3% of GMU 128 is public land a hunter can count on — BLM and State Wildlife Areas. A further 12% is State Trust Land, which is huntable only where CPW has enrolled it.
- BLM2%
- State Wildlife Area<1%
- State Trust Land12%
- Private85%
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 128 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 Range44%the full extent of range CPW maps for elk — near 100% on most units, and not a statement about when elk are present
- Resident Population41%the only layer that means year-round use
- Summer Range<1%used in summer
- Summer Concentration<1%where elk bunch up in summer
Elk seasons & weapons (2026)
| Season | Dates | Tags offered |
|---|---|---|
| Muzzleloader | September 12 – September 20 | Either-sex |
| Late Rifle | September 1 – January 31 | 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 82°F, lows around 50°F (mid-elevation normals)
- October — highs around 70°F, lows around 37°F, about 1.1 in of snow (mid-elevation normals)
- November — highs around 57°F, lows around 27°F, about 0.7 in of snow (mid-elevation normals)
GMU 128 elk hunting FAQ
Is there enough public ground to hunt this unit seriously?
Only about 3 percent of the unit is dependably open to public hunting on BLM and State Wildlife Areas, totaling roughly 37 square miles. An additional 12 percent is State Trust Land where access depends on CPW enrollment status. Legal access, not terrain difficulty, is the limiting factor here, and a hunter should verify specific parcels and current access status before committing.
When does the rut occur during the hunting seasons?
The Muzzleloader season, September 12–20, falls during the primary rut phase. The Late Rifle season, which opens September 1, begins as the rut is transitioning into full swing and continues well past rut conclusion into the winter period.
Does elk distribution change as fall progresses?
CPW maps 41 percent of the unit as year-round resident range, meaning hunters should expect elk present throughout the fall. Timing and extent of any seasonal movement can vary with weather and snow, but the unit does not experience a large-scale migration that empties it of elk.
Will a first-time applicant with no preference points draw this unit?
Yes. The easiest unit-wide either-sex code for an adult Colorado resident draws reliably at zero preference points, making it accessible to new applicants. Other weapons, seasons, and nonresident applicants require substantially more points.
Is the terrain walkable on foot?
The unit is 96 percent gentle and rolling, making it generally manageable for foot traffic. However, the extreme scarcity of open public ground means that access to a legally huntable area is more difficult than terrain itself.
What kind of weather should a hunter prepare for?
September conditions are mild, with highs near 82 degrees and almost no snow. October cools significantly, with highs in the upper 60s and about an inch of monthly snowfall. By November, temperatures drop into the 50s for highs with similar snowfall, creating cold conditions that can aid tracking.
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.