Agency-listedUSFSFreeRoad season: open (MVUM)
Bosman-Big John Flat Trailhead
Drive-up · U.S. Forest Service · UT · 38.35340, -112.39428
Ask an AI about this campsiteOpens Grok already loaded with this site. It reads the same records this page is built from, and links whatever it tells you.
Ask about this camp →U.S. Forest Service lists this site. On most of their ground you can camp away from developed sites pretty much anywhere — so treat this as a known-good spot, not the only one allowed. The unit sets stay limits and how far off road and water you must be. What changes is conditions — roads, gates, closures, fire rules. Check those with the unit before you commit to the drive.
Nearest road on the Forest Service MVUM — Bosman-Big John Flat Trailhead · Fishlake National Forest · UT
The nearest road on the Forest Service MVUM is FR 41058, 20 ft from the pin. The MVUM lists it as native material surface and maintenance level 2 – high-clearance vehicles.
Road season: open (MVUM) The MVUM lists FR 41058, 20 ft from the pin, open to passenger vehicles Apr 16 – Dec 31. That season ends after Dec 31.
MVUM record for FR 41058: “04/16-12/31” Read against the calendar on 2026-09-22; with JavaScript your browser re-checks it against today.
From the Forest Service's own Motor Vehicle Use Map roads layer (EDW, Clearinghouse refresh Aug 30, 2026), straight-line from the pin to the nearest mapped segment. The nearest segment is not necessarily the way in, a maintenance level is the agency's class and not a report on today, and a road's season is the road's — it is not a campground order. What the levels mean → What an MVUM is →
USGS topo — contours & terrain
Aerial — USGS / NAIP
Weather outlook — at Bosman-Big John Flat Trailhead
Loading the latest forecast…
Live NWS area forecast (~2.5 km grid, not elevation-corrected). Camp sits at 10,119 ft.
Fire & smoke — around Bosman-Big John Flat TrailheadNIFC · AirNow
Checking active fires & air quality…
Active wildfires from NIFC (within ~50 mi); air quality from AirNow. Always confirm current fire restrictions with the managing office before you go.
Everything you need — measured from Bosman-Big John Flat Trailhead · Fishlake National Forest · UT
▲ your camp. Rings are 15, 30 and 60 straight-line miles; bearings are approximate and roads run longer.
Nearest of each
- FFuel11 mi
- GGrocery11 mi
- @Mail11 mi
- HHardware14 mi
- WWater14 mi
- EVEV fast charger14 mi
- MMechanic14 mi
- LLaundry14 mi
- ShShower24 mi
- +Urgent care24 mi
- RxPharmacy25 mi
- DDump37 mi
- AAir-up41 mi
- PPropane49 mi
- OOutfitter59 mi
≤30 mi30–4545+water
The read: water's a short hop out, fuel & food sit about 11 mi out.
One dot per need — the nearest of each kind, straight-line from camp. Places from OpenStreetMap (© OpenStreetMap contributors); the EV fast charger from the US DOE station locator. Open in Google Maps ↗
The site — Bosman-Big John Flat Trailhead
Access
Drive-up
Land
U.S. Forest Service
Elevation
10,119 ft
Ground slope
9% · noticeable
State
UT
Coordinates
38.35340, -112.39428
Cost
Free · dispersed public land, no fee in any source
Nearby & resupply — around Bosman-Big John Flat Trailhead · Fishlake National Forest · UT (OpenStreetMap)
- Water featureBig John Flat · ~0.3 mi · USGS: perennial lake or pond
- Also mapped (OSM)Griffith Creek (stream) · mapped within 1.6 mi
- Nearest townBullion Falls · ~4.9 mi
- Rail & highwaynone mapped within 10 mi
- Drinking waternone within 10 mi
- FuelFuel · ~14.2 mi
- Propane / LPGnone within 31 mi
- GroceriesTugs · ~11.1 mi
- PharmacyPharmacy · ~24.7 mi
- Hospital / clinicHospital · ~14.1 mi
EV charging — from Bosman-Big John Flat Trailhead · Fishlake National Forest · UT — nearest public DC fast & Level 2 (US DOE station data)
- Nearest public DC fast charger14.3 mi straight-line W — Beaver, UT Rechargery Relay - 300 West · IONNA · CCS, NACS (Tesla) · 8 fast ports listed · listed open, last confirmed by AFDC 2026-09-16 · hours: 24 hours daily · directions
- Public DC fast stations within reach6 within 25 mi · 14 within 50 · 28 within 100 · 85 within 150
- Nearest listing CHAdeMO31.9 mi — Walmart 5168 (Richfield, UT), Richfield
- Nearest public Level 2 (J1772)31.6 mi — Richfield Fairfield Inc · Blink Network · J1772 · 3 Level 2 ports listed · listed open, last confirmed by AFDC 2026-09-16 · hours: 24 hours daily
- Pricing at the fast chargernot listed
- Power (kW)not listed by AFDC — “DC fast” spans roughly 24 to 350 kW, so ask the network.
- Read this honestlyStraight-line miles, like every distance on this site. Roads run longer than this, and you have to get back. We know where a charger is listed. We don’t know if it works today, how fast it is, or the road miles. Check the network before you commit.
Snapshot 2026-09-16 · AFDC record 422480 · US DOE Alternative Fuels Data Center
Nearby restrooms — around Bosman-Big John Flat Trailhead · Fishlake National Forest · UT — pit toilets, restrooms & rest areas (government data)
- Vault / pit toiletSkyline-Big John Flat Trailhead · ~0.4 mi N · USFS
- Vault / pit toiletBig John'S Dispersed Camping · ~0.7 mi SW · USFS
- Vault / pit toiletBosman-Big John Flat Trailhead · ~0.7 mi SW · USFS
- Vault / pit toiletBullion Pasture Trailhead · ~3.5 mi N · USFS
Coming out here — Bosman-Big John Flat Trailhead · Fishlake National Forest · UT
- Surface water mapped nearby: USGS maps Big John Flat as a perennial lake or pond, ~0.3 mi from the pin (National Hydrography Dataset, data refreshed October 2022). Mapped as perennial is not the same as flowing today. Nobody has checked it for you. Filter or boil anything you drink.
- Ground slope around the pin: about 9% — noticeable. Measured on USGS's 3DEP elevation model (1 m data here), sampled every 10 metres around the point. That is the hillside, not the ground under your wheels — a graded pullout or a bench a few metres across is too small to show up at that spacing, and nobody has checked this one for you.
- No rail line and no interstate or US route is mapped within 10 mi of the pin. Checked against the FRA/BTS North American Rail Network (data updated Jul 21, 2026) and the Census's TIGER/Line primary roads (TIGER/Line 2025, released Oct 2025). Both are national files and both are maps of what is built, not counts of what moves on it.
- Power: Dave carries his own — batteries or solar. A generator will run your rig and it is also the thing everybody camped near you can hear.
- Getting online: Dave recommends Starlink. He has had it since SpaceX introduced it, used it for four years living on the road, and it delivers as promised — several hundred nights out, and he can count on one hand the places he could not connect. The cable on his unit runs 150 feet, which is usually all it takes to find enough sky. Starlink → Referral link — Starlink pays Dave $100 in cash if you sign up through it, and that money funds this site and the next trip. It costs you nothing and does not change the recommendation.
Open Bosman-Big John Flat Trailhead elsewhere
Other camps near Bosman-Big John Flat Trailhead
If this one is full, gated or washed out.
- Big John's CUA Dispersed~0.7 mi
- Lake Stream Trailhead~3.1 mi
- Three Creeks Trailhead~3.3 mi
- Timid Springs Trailhead~4.1 mi
The unit that manages Bosman-Big John Flat Trailhead
Stay limits, road closures and fire restrictions at Bosman-Big John Flat Trailhead are set by Fishlake National Forest, not by the campsite — check there before you go.
Snow, and when this opens
The nearest automatic snow station is Big Flat at 10,320 ft, about 4 miles away. That is about the height of this camp, so it is a fair proxy. We do not repeat a depth here, because any number we stored would be stale by the time you read it — the station publishes today's.
How we know this — Bosman-Big John Flat Trailhead
Source
OpenStreetMap contributors
Confidence
Likely — The record is good enough to put a pin on, but thin in places. Treat the details as a starting point, not gospel.
How it was placed
auto: drive (road/trail right there)
Nearest MVUM road
US Forest Service Motor Vehicle Use Map roads layer (EDW_MVUM_01, layer 1), Clearinghouse refresh Aug 30, 2026. Straight-line distance from the pin to the nearest mapped segment within 1 mi; surface type, maintenance level and open dates are the agency's own values for that segment, expanded from its codes and otherwise unedited. Nothing here says which road reaches the site.
EV chargers
US DOE Alternative Fuels Data Center station locator, snapshot 2026-09-16. Straight-line miles to the nearest public, open, unrestricted station; restricted and planned units are shown but never counted.
Field check
On the agency's books. The land manager inventoried this site, so its existence is not in question — current conditions are. Nobody from here has camped it recently.
What we don’t know about Bosman-Big John Flat Trailhead
A land record can put you within a few meters of a spot. It cannot tell you any of this — so check it yourself, and treat anything below as the open question it is.
- Whether that MVUM road is the way in, and the last stretch beyond it
- Whether the site itself closes on its own schedule — only the road's season is on record
- How many rigs actually fit
- Cell coverage by carrier
- Current fire restrictions
- Whether any water here is drinkable
- Shade & wind exposure
- Noise and who else shows up
- Whether a listed EV charger works today, or the road miles to it
Before you go — Bosman-Big John Flat Trailhead
Camping at altitude →When the high country opens →Finding water out here →First-night troubleshooting →All field notes →