Unit 420 · Big Belt Mountains
About this unit
Big Belt Mountains east of Helena. Limestone range with mixed conifer forest, high open ridgelines, and significant Helena-Lewis and Clark National Forest acreage along the Missouri River breaks.
- Big Belt Mountains
- Helena-Lewis and Clark National Forest
Public lands inside this unit
We're still mapping public-land overlap for this unit. Explore parks in Montana →
Trails near Unit 420
1 found
Campgrounds near Unit 420
2 found
Species in this unit
Official agency resources
Montana Fish, Wildlife & Parks
- Hunting regulations ↗
https://fwp.mt.gov/hunt/regulations
- Draw / lottery ↗
https://fwp.mt.gov/buyandapply/hunting-licenses/application-drawing-dates
- GMU map ↗
https://fwp.mt.gov/gis/maps/huntPlanner/
- Harvest reporting ↗
https://myfwp.mt.gov/fwpPub/harvestReports
- Hunter education ↗
https://fwp.mt.gov/education/hunter
- Buy a license ↗
https://fwp.mt.gov/buyandapply/hunting-licenses
Authoritative source
Outdoors does not publish hunting regulations directly. For current season dates, bag limits, legal weapons, draw deadlines, and license costs in unit 420, go straight to the issuing agency.
Read the Montana agency pageBoundary verified by Outdoors against the agency source on 05/23/2026.