Colorado › Hunting seasons › GMUs › GMU 37

Northwest Region · 2026-27

Elk, deer and bear seasons for GMU 37

Unit lines run through Summit County and Grand County; this page gathers its 48 codes, its herd units and its 2024 take.

Hunt codes Harvest Deer gear

528Square miles

48Hunt codes

200Elk taken 2024

3Counties

Photo: Jeff Gunn (CC BY 2.0)

Size and counties of GMU 37

Summit County takes in 85% of GMU 37, a high-country unit covering 337,982 acres in the CPW Northwest Region.

Its lines cross 3 counties: Summit (446 sq mi), Grand (78 sq mi) and Lake (3 sq mi). Less than 2% of the unit is mapped in Lake; check the written boundary there.

County	Overlap sq mi	Part of GMU	Part of county
Summit County	446.5	85%	72%
Grand County	78.0	15%	4%
Lake County	3.2	0.6%	0.8%

The DAU codes on the CPW layer put GMU 37 with neighbouring units: D-9 (deer), E-13 (elk), A-37 (pronghorn), M-3 (moose), B-16 (bear) and L-NW (lion).

528Square miles

337,982Acres

D-9Deer DAU

E-13Elk DAU

A-37Pronghorn DAU

M-3Moose DAU

B-16Bear DAU

L-NWLion DAU

Area, county overlap and DAU codes from the CPW GMU and DAU GIS layers (overlay with Census county lines); boundary text in the 2026 Big Game brochure GMU descriptions; checked November 5, 2026.

GMU 37 rules that differ by unit

YesElk APR

SelectedElk CWD test

3Lion group

36Lion limit

Limited onlySpring turkey

Limited onlyFall turkey

NoLynx area

MountainTerrain

3OTC elk rows

APR applies in GMU 37; spikes and small raghorns without a 5-inch brow tine are off limits.
Chronic wasting disease sampling is required for chosen rifle elk licenses here, at no charge.
GMU 37 lion season runs until group 3 reaches 36 lions or March 31, 2027.
In this unit spring turkey is by limited license only; fall turkey needs a limited license.
You can buy archery either sex, second rifle bull and third rifle bull elk licenses for GMU 37 without a draw.

From the elk antler point list, the 2026 mandatory elk CWD GMUs, the 2026-2027 Mountain Lion brochure, the 2026 Turkey brochure and the Small Game brochure lynx rules (CPW); checked November 5, 2026. Guides: antler point GMUs, CWD testing, lion groups, turkey units.

GMU 37 dates across 2026-27

Before the code tables, the short version: 49 dated rows (16 elk, 10 deer, 8 pronghorn, 5 moose, 8 black bear, 1 mountain lion and 1 wild turkey) include GMU 37.

Species	Row	Window	Sale	Codes
Elk	Rifle cow private land only	Sep 1–Jan 31	Private only	33
Elk	Archery either sex limited nonresident only	Sep 2–30	Limited	24
Elk	Archery either sex private land only	Sep 2–30	Private only	13
Elk	Archery either sex OTC residents	Sep 2–30	OTC	—
Elk	Muzzleloader cow limited	Sep 12–20	Limited	69
Elk	Muzzleloader either sex limited	Sep 12–20	Limited	19
Elk	Rifle cow limited	Oct 14–18	Limited	48
Elk	Rifle either sex limited	Oct 14–18	Limited	16
Elk	Rifle either sex private land only	Oct 14–18	Private only	19
Elk	Rifle cow limited	Oct 24–Nov 1	Limited	89
Elk	Second rifle bull OTC	Oct 24–Nov 1	OTC	—
Elk	Rifle cow limited	Nov 7–15	Limited	93
Elk	Third rifle bull OTC	Nov 7–15	OTC	—
Elk	Rifle cow limited	Nov 18–22	Limited	90
Elk	Rifle either sex limited	Nov 18–22	Limited	26
Elk	Rifle either sex private land only	Nov 18–22	Private only	13
Deer	Archery either sex limited	Sep 2–30	Limited	29
Deer	Muzzleloader buck limited	Sep 12–20	Limited	62
Deer	Muzzleloader doe limited	Sep 12–20	Limited	34
Deer	Rifle buck limited	Oct 24–Nov 1	Limited	71
Deer	Rifle doe limited	Oct 24–Nov 1	Limited	34
Deer	Rifle either sex private land only	Oct 24–Nov 1	Private only	11
Deer	Rifle buck limited	Nov 7–15	Limited	71
Deer	Rifle doe limited	Nov 7–15	Limited	35
Deer	Rifle either sex private land only	Nov 7–15	Private only	11
Deer	Rifle buck limited	Nov 18–22	Limited	59
Pronghorn	Archery buck limited	Aug 15–Sep 20	Limited	24
Pronghorn	Archery doe limited	Sep 1–20	Limited	11
Pronghorn	Muzzleloader buck limited	Sep 21–29	Limited	35
Pronghorn	Muzzleloader doe limited	Sep 21–29	Limited	24
Pronghorn	Rifle buck private land only	Sep 26–Oct 18	Private only	2
Pronghorn	Rifle doe private land only	Sep 26–Oct 18	Private only	2
Pronghorn	Rifle buck limited	Oct 3–11	Limited	66
Pronghorn	Rifle doe limited	Oct 3–11	Limited	48
Moose	Archery cow limited	Sep 12–30	Limited	36
Moose	Muzzleloader cow limited	Sep 12–20	Limited	36
Moose	Rifle cow limited	Oct 1–14	Limited	36
Moose	Season choice (archery/muzzleloader/rifle) bull limited	Oct 1–14	Limited	19
Moose	Rifle cow limited late season	Oct 14–Nov 22	Limited	10
Black bear	Archery either sex limited	Sep 2–30	Limited	35
Black bear	Archery either sex OTC	Sep 2–30	OTC	15
Black bear	Rifle either sex limited	Sep 2–30	Limited	34
Black bear	Rifle either sex private land only	Sep 2–30	Private only	20
Black bear	Muzzleloader either sex limited	Sep 12–20	Limited	35
Black bear	Muzzleloader either sex OTC	Sep 12–20	OTC	15
Black bear	Rifle either sex private land only	Oct 1–Nov 22	Private only	15
Black bear	Rifle either sex OTC	Oct 14–Nov 22	OTC	12
Mountain lion	Lion season	Nov 23–Mar 31	Limited	—
Wild turkey	Fall limited late season	Sep 1–Oct 4	Limited	—

Season rows from the 2026 Colorado Big Game brochure (deer p. 30, elk p. 45, pronghorn p. 63, moose p. 68, bear p. 72), the Turkey brochure and the Mountain Lion brochure; checked November 5, 2026.

Which codes cover GMU 37

16 elk, 10 deer, 8 pronghorn, 5 moose, 8 black bear and 1 wild turkey codes include GMU 37, 48 altogether.

Limited codes: 42. Private land only: 10. Ranching for Wildlife: 0. Marked 6+ points: 0.

Elk archery, 3

Code	Take	Type	Dates	List	Points, take
`E-E-000-U1-A`	Either sex	OTC	Sep 2–30	A	1,076 of 9,541
`E-E-028-P1-A`	Either sex	Private land only	Sep 2–30	A	—
`E-E-028-V1-A`	Either sex	Nonresident only	Sep 2–30	A	26 of 248

Elk muzzleloader, 2

Code	Take	Type	Dates	List	Points, take
`E-E-028-O1-M`	Either sex	Limited	Sep 12–20	A	22 of 244
`E-F-028-O1-M`	Cow	Limited	Sep 12–20	A	0 of 35

Elk rifle, 11

Code	Take	Type	Dates	List	Points, take
`E-F-028-P5-R`	Cow	Private land only	Sep 1–Jan 31	B	0 of 5
`E-E-028-O1-R`	Either sex	Limited	Oct 14–18	A	52 of 230
`E-E-028-P1-R`	Either sex	Private land only	Oct 14–18	A	28 of 67
`E-F-028-O1-R`	Cow	Limited	Oct 14–18	A	9 of 79
`E-F-028-O2-R`	Cow	Limited	Oct 24–Nov 1	A	5 of 210
`E-M-000-U2-R`	Bull	OTC	Oct 24–Nov 1	A	4,558 of 23,668
`E-F-028-O3-R`	Cow	Limited	Nov 7–15	A	16 of 228
`E-M-000-U3-R`	Bull	OTC	Nov 7–15	A	2,096 of 17,371
`E-E-028-O4-R`	Either sex	Limited	Nov 18–22	A	8 of 190
`E-E-028-P4-R`	Either sex	Private land only	Nov 18–22	A	6 of 44
`E-F-028-O4-R`	Cow	Limited	Nov 18–22	A	11 of 257

Deer archery, 1

Code	Take	Type	Dates	List	Points, take
`D-E-018-O1-A`	Either sex	Limited	Sep 2–30	A	60 of 457

Deer muzzleloader, 2

Code	Take	Type	Dates	List	Points, take
`D-F-018-O1-M`	Doe	Limited	Sep 12–20	B	0 of 7
`D-M-018-O1-M`	Buck	Limited	Sep 12–20	A	76 of 410

Deer rifle, 7

Code	Take	Type	Dates	List	Points, take
`D-E-018-P2-R`	Either sex	Private land only	Oct 24–Nov 1	A	40 of 72
`D-F-018-O2-R`	Doe	Limited	Oct 24–Nov 1	B	6 of 9
`D-M-018-O2-R`	Buck	Limited	Oct 24–Nov 1	A	295 of 948
`D-E-018-P3-R`	Either sex	Private land only	Nov 7–15	A	25 of 46
`D-F-018-O3-R`	Doe	Limited	Nov 7–15	B	4 of 9
`D-M-018-O3-R`	Buck	Limited	Nov 7–15	A	326 of 772
`D-M-018-O4-R`	Buck	Limited	Nov 18–22	A	72 of 145

Pronghorn archery, 2

Code	Take	Type	Dates	List	Points, take
`A-M-018-O1-A`	Buck	Limited	Aug 15–Sep 20	A	4 of 28
`A-F-018-O1-A`	Doe	Limited	Sep 1–20	A	0 of 32

Pronghorn muzzleloader, 2

Code	Take	Type	Dates	List	Points, take
`A-F-018-O1-M`	Doe	Limited	Sep 21–29	A	6 of 40
`A-M-018-O1-M`	Buck	Limited	Sep 21–29	A	17 of 45

Pronghorn rifle, 4

Code	Take	Type	Dates	List	Points, take
`A-F-018-P5-R`	Doe	Private land only	Sep 26–Oct 18	B	20 of 35
`A-M-018-P5-R`	Buck	Private land only	Sep 26–Oct 18	B	18 of 33
`A-F-018-O1-R`	Doe	Limited	Oct 3–11	A	25 of 108
`A-M-018-O1-R`	Buck	Limited	Oct 3–11	A	21 of 56

Moose archery, 1

Code	Take	Type	Dates	List	Points, take
`M-F-037-O1-A`	Cow	Limited	Sep 12–30	A	4 of 5

Moose muzzleloader, 1

Code	Take	Type	Dates	List	Points, take
`M-F-037-O1-M`	Cow	Limited	Sep 12–20	A	1 of 1

Moose rifle, 2

Code	Take	Type	Dates	List	Points, take
`M-F-037-O1-R`	Cow	Limited	Oct 1–14	A	5 of 7
`M-F-037-L1-R`	Cow	Limited, late	Oct 14–18 Oct 24–Nov 1 Nov 7–15 Nov 18–22	A	11 of 14

Moose season choice, 1

Code	Take	Type	Dates	List	Points, take
`M-M-037-O1-X`	Bull	Limited	Oct 1–14	—	17 of 17

Black bear archery, 2

Code	Take	Type	Dates	List	Points, take
`B-E-015-O1-A`	Either sex	Limited	Sep 2–30	A	4 taken
`B-E-015-U1-A`	Either sex	OTC	Sep 2–30	A	17 taken

Black bear muzzleloader, 2

Code	Take	Type	Dates	List	Points, take
`B-E-015-O1-M`	Either sex	Limited	Sep 12–20	A	0 taken
`B-E-015-U1-M`	Either sex	OTC	Sep 12–20	A	7 taken

Black bear rifle, 4

Code	Take	Type	Dates	List	Points, take
`B-E-015-O1-R`	Either sex	Limited	Sep 2–30	A	29 taken
`B-E-037-P1-R`	Either sex	Private land only	Sep 2–30	B	0 taken
`B-E-037-P5-R`	Either sex	Private land only	Oct 1–Nov 22	B	1 taken
`B-E-015-U5-R`	Either sex	OTC	Oct 14–18 Oct 24–Nov 1 Nov 7–15 Nov 18–22	A	9 taken

Wild turkey rifle, 1

Code	Take	Type	Dates	List	Points, take
`T-E-015-L1-R`	Either sex	Limited, late	Sep 1–Oct 4	—	15 lic.

The last column gives the 2025 harvest and hunters for the whole code where CPW reported it, which may include other units.

Hunt codes from the 2026 Colorado Big Game brochure tables (PDF pp. 29-77) and the 2026 Turkey brochure; List A/B/C rules on p. 26; 2025 code estimates from CPW harvest reports (elk, deer, pronghorn, bear, moose); checked November 5, 2026. How the draw works.

GMU 37 harvest numbers

1,955 elk hunters spent 9,608 days in GMU 37 in 2024 and brought home 200 elk.

Mule and whitetail deer combined: 112 taken over 1,397 hunter days.

Pronghorn hunters reported 16% success and 7 animals.

Black bear harvest: 8 over 23 days.

After the 2025 seasons, about 2,660 elk lived in the herd unit covering GMUs 28, 37, 371.

The 2025-26 lion group with GMU 37 recorded 30 lions.

Species	Animals	Split	Hunters	Rate	Rec. days
Deer	112	106/6/0	338	33%	1,397
Elk	200	102/91/7	1,955	10%	9,608
Pronghorn	7	7/0/0	40	16%	119
Black bear	8	4/4	—	—	23

The wider herd, 2025

Game	Herd	Taken	Hunters	Rate	Population	Male ratio
Deer	D-09	1,084	3,449	31%	10,700	31
Elk	E-13	381	4,502	8%	2,660	26
Pronghorn	A-37	133	503	26%	690	71

2024 “All Manners of Take” tables by GMU: deer, elk, pronghorn, bear; 2025 DAU estimates and 2025 post-hunt populations (elk, deer, pronghorn); 2025 lion harvest (CPW). Survey estimates; checked November 5, 2026.

GMU 37 public acres and parcels

Public ground tagged with GMU 37: 8 records, including 1 SWAs and 0 STL parcels.

SWAs and STLs need a Colorado hunting or fishing license or a State Wildlife Area Pass for everyone 16 and older, and each parcel has its own dates.

National forests, 3

White River
2,289,637 acres
San Isabel
1,108,474 acres
Arapaho
720,567 acres

Ranger districts, 3

Sulphur
410,005 acres
Dillon
312,792 acres
Leadville
280,143 acres

BLM offices, 1

BLM Kremmling
381,806 acres

State wildlife areas, 1

Junction Butte
1,304 acres

Land records from CPW, State Land Board, USFS, BLM and other agency sources (each land page cites its own); GMU tags from those records; checked November 5, 2026. All Colorado public land.

Near GMU 37

1 town on our list sit inside GMU 37 and 6 more lie within 10 miles of it.

Breckenridgeinside the lines
Silverthornenear the line
Leadvillenear the line
Kremmlingnear the line
Georgetownnear the line
Minturnnear the line
Fairplaynear the line

GMU 37 borders or shares counties with these units. Their numbers sit side by side here.

Nearby unit	Shared	Sq mi	Elk	Deer	Codes
GMU 371	Summit	172	113	11	38
GMU 361	Grand	83	57	65	37
GMU 28	Grand	663	177	88	47
GMU 18	Grand	645	662	110	50
GMU 49	Lake	538	378	343	41
GMU 48	Lake	300	93	54	32
GMU 181	Grand	182	205	43	48
GMU 27	Grand	197	113	53	47

Towns from Census places with their GMU and GMUs within 10 miles; neighbours from the CPW GMU layer county overlay; checked November 5, 2026. All town pages · all GMUs.

Sunrise, sunset and legal hours in GMU 37

Walk-In Access properties open an hour before sunrise and close an hour after sunset, two hours for waterfowl, deer, elk and pronghorn hunters.

Date	Why it matters	Sunrise	Sunset	Big game hours	Bird hours
Aug 15, 2026	Pronghorn archery opens	6:16 a.m.	8:03 p.m.	5:46 a.m. to 8:33 p.m.	5:46 a.m. to 8:03 p.m.
Sep 2, 2026	Bow season opens	6:33 a.m.	7:36 p.m.	6:03 a.m. to 8:06 p.m.	6:03 a.m. to 7:36 p.m.
Sep 12, 2026	Muzzleloader opens	6:42 a.m.	7:20 p.m.	6:12 a.m. to 7:50 p.m.	6:12 a.m. to 7:20 p.m.
Oct 3, 2026	Duck season opens	7:01 a.m.	6:46 p.m.	6:31 a.m. to 7:16 p.m.	6:31 a.m. to 6:46 p.m.
Oct 24, 2026	Second rifle opens	7:23 a.m.	6:14 p.m.	6:53 a.m. to 6:44 p.m.	6:53 a.m. to 6:14 p.m.
Nov 23, 2026	Lion season opens	6:57 a.m.	4:45 p.m.	6:27 a.m. to 5:15 p.m.	6:27 a.m. to 4:45 p.m.
Dec 21, 2026	Shortest day	7:21 a.m.	4:43 p.m.	6:51 a.m. to 5:13 p.m.	6:51 a.m. to 4:43 p.m.

Turkey hours end at sunset.

Hours rules from the 2026 Colorado Big Game brochure and the Small Game and Waterfowl brochure; sunrise and sunset worked out for this location with the NOAA solar formula (Mountain Time); checked November 5, 2026. Legal hours for every county.

Green meadow below a snowy mountain range under sweeping clouds in ColoradoPhoto: Max and Dee Bernt (CC BY 2.0)

Snowy peaks of the Rocky Mountains beyond pines and a valley in central ColoradoPhoto: U.S. Department of Agriculture (Public Domain Mark 1.0)

Snow-covered Rocky Mountain peaks rising above a line of pines in ColoradoPhoto: Bob Denaro (CC BY 2.0)

Asked about GMU 37

Is GMU 37 mostly private?

Not entirely; 8 public records overlap it.

How many elk hunters use GMU 37?

1,955 in 2024, over 9,608 hunter days.

What is the largest town in or near GMU 37?

Silverthorne, of the towns on our list.

How big is the herd in GMU 37?

2,660 after the 2025 hunts for the herd of units 28, 37, 371.

How many hunt codes are valid in GMU 37?

48: 16 elk, 10 deer, 8 pronghorn, 5 moose, 8 black bear and 1 wild turkey.

Where is GMU 37 in Colorado?

It lies in the CPW Northwest Region, across Summit, Grand and Lake.

Must I get a CWD test for GMU 37 elk?

For selected rifle elk codes, yes, and the test is free.

Is GMU 37 an APR unit for elk?

Yes, GMU 37 is on the 2026 APR list.

Is fall turkey open in GMU 37?

Fall turkey needs a limited license; spring turkey is by limited license only.

How many lions can be taken around GMU 37?

36 across group 3.

Answers drawn from the CPW sources cited on this page; checked November 5, 2026.