Lake Mary Ronan State Park
- Status
- Status not posted
- Entrance fee
- $8 per dayAnnual pass available
- Day-use reservations
- None mentioned
- Dogs
- Statewide rule — see below
- Camping
- Yes
- Official site
- fwp.mt.govMay 16- Sept. 21:
Official page last checked Oct 29, 2026. How we keep this current
Overview
Lake Mary Ronan State Park is a 120-acre park in Lake County, about 20 miles northwest of Polson.
The park supports ice fishing, winter sports, canoeing and kayaking, boating, and swimming. Water access includes a swimming beach and a boat ramp. For overnight stays there are campsites (RV sites, tent sites, and group camping).
Hours
Park, gate, office and facility hours are listed separately because they often differ. Alerts above override normal hours.
| Facility | Days | Hours | Season |
|---|---|---|---|
| The park’s wording doesn’t give clock times — see the official wording below. | |||
Official wording
Open
Opens May 1 (earlier if conditions allow until October 30th).
Potable water: Available May through September
Dock: Available during open water
Source: official park page, checked Oct 29, 2026. Times are local to the park (America/Denver).
Fees and passes
| Item | Amount |
|---|---|
| Montana residents who pay the (resident) | $9 · year |
| Day use entrance fee with a vehicle | $8 |
| Day use entrance fee as a walk-in, bicycle or bus passenger | $4 |
| With a Nonresident Entrance Pass (nonresident) | Free |
| Campsite fees range from | $4 · night |
| Campsite fees range from | $34 · night |
Official wording
Montana Residents • Montana residents who pay the $9 state parks fee with their annual vehicle registration have no daily entrance fees to state parks. For residents who don't include this in their vehicle registration, non-resident day use fees apply. Nonresidents • Day use entrance fee with a vehicle: $8 • Day use entrance fee as a walk-in, bicycle or bus passenger: $4 • With a Nonresident Entrance Pass: Free Campsites • Campsite fees range from $4-$34 per night, depending on season and available amenities. Visit Reserve America to check fees and reserve campsites.
Montana park passes
- State parks fee with Montana vehicle registration — $9 per vehicle per year (residents). No daily entrance fees to state parks for that vehicle Details
- Nonresident Entrance Pass (12-month) — $50 per vehicle. Free entrance and discounted camping ($10-$12/night) for one year from month of issue Details
- 7-Day Nonresident Entrance Pass — $35. Entrance for 7 consecutive days and discounted camping; sold at parks only Details
From the Montana state guide. Confirm which passes this park accepts.
Reservations
- Day use
- No day-use reservation requirement mentioned
- Booking system
- ReserveAmerica (montanastateparks.reserveamerica.com)
- Phone
- 1-855-922-6768
We link to the official booking system rather than showing live availability, which changes minute to minute.
Pets
See the park’s wording
Pets Allowed (amenity list)
Service animals are generally permitted where pets are not. Check with the park for specific areas.
Camping
This park offers a quiet camping opportunity nestled among a boreal forest. Lake Mary Ronan State Park's campground offers 25 campsites, including seasonal electricity at individual campsites, a paved campground road and spurs, plus a new and improved group camping area, boat trailer parking and a boating ramp.
From the official park page, checked Oct 29, 2026. Site counts and prices can change; confirm when booking.
Things to do
Wildlife viewing and birdingBoatingCampingCanoeing and kayakingFishingHikingIce fishingPicnickingWinter sportsSwimming
Amenities
Facilities
- Restrooms
- Picnic areas
- Parking
- Group facilities
Water
- Swimming beach
- Boat ramp
Camping
- Tent camping
- RV camping
- Group camping
✓ listed by the park · ✕ the park says it is not available. Anything not shown here isn’t mentioned by the official source — that means unknown, not unavailable.
Accessibility
Amenities: ADA Accessible
Conditions change. Contact the park to confirm specific accessible features before your visit.
Getting there
- Address
- 50623 Lake Mary Ronan Rd.
Dayton, MT 59860 - Nearest town
- Polson — about 20 mi northwest (straight line)
- Coordinates
- 47.9274, -114.3823
- Phone
- May 16- Sept. 21:
- bschwartz2@mt.gov
Nearby state parks
Sources and freshness
- Montana State Parks — park page — last checked Oct 29, 2026
- Montana State Parks Find a Park list, joined with FWP 'State Park Locations' ArcGIS layer
- Wikidata
- USGS PAD-US 4.1 (boundary and acreage)
“Last checked” is when our system last read the official source. No change has been detected since this page was first published. Hours, fees and rules can change without notice — confirm with the park before you go. Methodology