Overview
- DepartSun Oct 4, morning
- HomeMon Oct 12, evening
- OutUS-2 · UP, MN, ND
- BackI-94 · rejoin at Duluth
- Park baseGardiner · 3 nights
- Longest dayOct 5 · 675 mi
Nine days, three of them nearly all driving in each direction, one full day with her brother, and two days in the park. There is no slack in it, which is fine as long as nobody expects any.
Sunday, October 4
Traverse City → Duluth
US-31 north to Petoskey, I-75 over the Mackinac Bridge, then US-2 the full width of the Upper Peninsula: Naubinway, Manistique, Escanaba, Iron Mountain, Ironwood. Into Wisconsin at Hurley, along the south shore of Lake Superior through Ashland, into Duluth.
This is two-lane at 55 with towns, so it is a real day despite not being the longest. Stay in Canal Park — walkable, good food, on the water.
Ashland, Wisconsin at about 525 miles is the bail-out. The UP has towns every forty miles, so stopping short costs you very little.
Monday, October 5
Duluth → Sidney
Stay on US-2 the whole way: Grand Rapids, Bemidji, Grand Forks, Devils Lake, Minot, Williston. Once you cross into North Dakota it is largely four-lane at 70, so the miles go faster than yesterday despite being longer. Cross into Montana on MT-200 out of Williston.
Williston, ND is 50 miles north. Glendive, MT is 50 miles south. Both have full chain inventory.
Tuesday, October 6
Sidney
The day with her brother. Everything else in this plan bends around this one, and the schedule was built so that you arrive the night before rather than the morning of.
If it lands on the 6th or 7th, flip the trip: Yellowstone first on Oct 6–8, then Sidney on the way home Oct 9–10. The geography works in either direction — Sidney sits on both routes.
Wednesday, October 7
Sidney → Gardiner
South to Glendive, I-94 west at an 80 mph limit to Billings, I-90 west to Livingston, then US-89 south down Paradise Valley to Gardiner. Arrive mid-afternoon.
Three things before dinner
- Fill the tank in Gardiner. The Mammoth gas station closes for the season on October 4. Inside the park your only fuel is Canyon and Old Faithful.
- Buy bear spray (about $50–60) and two days of groceries for car lunches.
- Drive the five miles up to Mammoth for the evening. The elk rut peaks in early October and the bulls bugle on the hotel lawn and terraces. Best hour of the day for it, and it costs you nothing.
Yellowstone · October 7–9
How this actually works
Yellowstone is a driving park with short walks attached, not a hiking park. You will cover a hundred miles a day in the car and about five on foot, almost none of it in one continuous piece. Nearly everything is flat boardwalk or paved path. The pace killer is not difficulty — it is the number of stops and the drive between them.
Daylight is the real constraint
Sunrise around 7:30, sunset around 6:45. Eleven usable hours. Both park days are full ones, and the tables below are menus rather than schedules.
Altitude is the other
Traverse City is 600 feet. Mammoth is 6,200, Old Faithful 7,300, Canyon 7,900, and Dunraven Pass 8,859. Nothing dangerous, but on the first day you will be winded on stairs you would not normally notice, and it dries you out fast. Drink more than feels necessary.
Why Gardiner and not in the park
Better room for less money, real restaurants and a bar with normal hours, a grocery store, gas, and usable cell service — which matters given why you are stopping in Sidney. Mammoth is ten to fifteen minutes up the hill.
The Gardiner–Mammoth road gains 900 feet in five miles and faces north. Expect frost or ice on early departures. Take the first descent of the day slow.
Thursday, October 8
Geyser basins
Tap any stop name to see photos of it.
- Mammoth Lower Terraces60–75 min 1.75 mi of boardwalk · several hundred stairs
- Norris Geyser Basin75–90 min 2.25 mi across both loops · boardwalk, some stairs
- Fountain Paint Pot20 min 0.5 mi flat boardwalk
- Firehole Lake Drive20 min 3-mi one-way loop, drive-through
- Midway Geyser Basin30 min 0.8 mi flat boardwalk over the Firehole
- Grand Prismatic Overlook1–2 hrs 1.2 mi round trip · 105 ft climb · the one real hike
- Black Sand Basin20 min 0.5 mi flat boardwalk
- Upper Geyser Basin90 min–3 hrs up to 3 mi round trip · flat paved
Mammoth Lower Terraces
The boardwalk climbs from Liberty Cap up toward Canary Spring, and that is where the stairs are — the Park Service calls the Lower-to-Upper connection strenuous and several hundred steps. If Upper Terrace Drive is open, its entrance is two miles south of the Albright Visitor Center: drive to the top and walk down to Canary Spring instead. Same views, far less climbing.
Norris
Two loops. Porcelain Basin is about three-quarters of a mile, open and bright. Back Basin is a mile and a half, wooded, and contains Steamboat — the tallest active geyser in the world, and completely unpredictable, so do not wait on it. The Norris museum closed for the season on October 3, so expect no staffed building and vault toilets only.
Grand Prismatic Overlook — do this one
The only real hike of the trip and the best payoff on it. The boardwalk at Midway gives you steam and a hot sidewalk; the overlook gives you the photograph you drove 1,700 miles for. It climbs 105 feet over six-tenths of a mile, 1.2 miles round trip.
Park at the Fairy Falls parking lot, one mile south of the Midway Geyser Basin lot. Parking is very limited. People get this wrong constantly and end up walking the boardwalk instead, which is a completely different and much worse view.
Upper Geyser Basin
Go into the Old Faithful Visitor Education Center first — open through October 31 — and read the prediction board. They post eruption windows for Old Faithful, Grand, Riverside, Daisy and Castle. Then walk the basin timed around whatever is due.
Grand Geyser is the better show: 150-plus feet, roughly every six or seven hours, with a predicted window usually good to about seventy-five minutes either side. You may have to sit and wait, so bring a hat. Morning Glory Pool is at the far end, about 1.4 miles out; turning back before it costs you little.
Old Faithful Inn is open through October 12. Walk into the lobby and eat lunch there even though you are not staying — it is worth seeing from the inside.
Friday, October 9
Canyon, Hayden, Dunraven, Lamar
The better of the two days. Start early and do not rush the back half — dusk in Lamar is the single best hour of the trip.
Tap any stop name to see photos of it.
- Artist Point20 min ~100 yards, paved
- Brink of the Lower Falls45 min 0.7 mi round trip · 600 ft of switchbacks
- Lookout Point / Grand View30 min short paved walks on the north rim
- Hayden Valley45–60 min roadside pullouts · no walking
- Mud Volcano25 min 0.6 mi loop, one hill
- Tower Fall overlook15 min ~100 yards · trail to the base is closed
- Lamar Valley90+ min roadside pullouts · stay for dusk
Brink of the Lower Falls
The most strenuous thing in the two days. You descend 600 feet on paved switchbacks to stand where the river goes over the edge, then climb back out at 7,800 feet — about twenty minutes up at an unhurried pace. Worth it. You feel the volume of water through the rock.
Hayden and Lamar need no walking at all
You drive, you pull over, you get out with binoculars. That is the entire activity, which is why binoculars matter more than any other item you bring.
Tower-Roosevelt's gas station closed September 6 and Mammoth's closes October 4. Canyon is your only fuel on this loop.
Run the loop in reverse — out to Lamar and Tower first on the year-round north road, then back to Canyon via Norris. Basing at Gardiner means this costs you almost nothing.
Do you need a guide?
No, with one exception. Everything above is self-guided by design: boardwalks, signs, a visitor center. Paying someone to walk you around the geyser basins would be a waste.
Wolf watching in Lamar is the exception
It is genuinely hard to do yourself. The wolves are often a mile off, you need a spotting scope rather than binoculars to see anything meaningful, and the people who actually find them run radio networks and know which pack is where this month. A private guide out of Gardiner runs roughly $600–900 for a day; shared morning tours cost considerably less.
Get to a Lamar pullout at first light and look for the cluster of parked cars with tripod-mounted spotting scopes. That is the wolf-watching community. They are there every morning, and they are generally happy to let a polite stranger look through the eyepiece. It is how most people see their first wolf.
Food and bear spray
Pack a cooler in Gardiner
You can eat in the park, but you will burn forty-five minutes of daylight driving to a restaurant. Load up in town and eat at pullouts. Bring a thermos — sitting in a Lamar pullout at dusk in October is cold, and that is exactly when you want to still be sitting there.
Open October 8–9 if you want a hot meal
- Old Faithful Inn dining & Bear Paw Delithru Oct 19
- Snow Lodge Geyser Grillthru Oct 31
- Old Faithful General Storethru Oct 18
- Canyon Lodge Eatery & M66 Loungethru Oct 25
- Canyon General Storethru Oct 11
- Mammoth dining, Map Room, storeopen
- Tower & Lamar stretchnothing open
Bear spray
Grizzlies are hyperphagic in October — feeding hard before denning, active, and less cautious than they are in midsummer.
- Buy it in Gardiner, about $50–60. You are driving, not flying, so you keep the can.
- Rental exists at the Canyon kiosk but it closes October 10, which is your departure day. Do not build around it.
- On your hip, not in the pack. It is useless in a backpack.
- Carry it on the Grand Prismatic Overlook hike specifically, and honestly any time you are out of the car.
Safety
Thermal crust is thin and people die doing this every few years. It is not a formality.
- Elk rut at Mammoth. Bull elk are aggressive in early October and they hang around the hotel, the parking lots and the terraces. People get charged every year. Put a car between you and one if it turns toward you.
- Distance rules: 25 yards from bison and elk, 100 yards from bears and wolves.
- Icy boardwalks in the first hours of the day. Traction matters more than warmth at 8am.
- Cell service is effectively nonexistent outside Mammoth and Old Faithful. Download offline maps before you enter.
- Mammoth Medical Clinic is open year-round — the nearest real care inside the park.
Saturday, October 10
Gardiner → Dickinson
US-89 to Livingston, I-90 to Billings, I-94 east. Theodore Roosevelt National Park is directly off the interstate at Medora, and the South Unit scenic loop is a ninety-minute drive full of bison, wild horses and badlands. You are passing the entrance either way, and your park pass covers it.
Sleep in Medora if it is still open for the season, or Dickinson thirty-five miles east for full services.
Sunday, October 11
Dickinson → Duluth
I-94 east through Bismarck, Jamestown and Fargo to Minneapolis, then I-35 north to Duluth. Interstate the entire way, which is why the return is faster than the outbound despite covering similar ground.
Monday, October 12
Duluth → home
A long finish, but it is the same road you drove out on. Home in the evening.
The return leg is the flexible part. You can compress Oct 10–12 into two days — Gardiner to Fargo, Fargo to home — if you need to be back sooner, or skip Theodore Roosevelt to buy back two hours.
Booking list
- Gardiner — Oct 7, 8, 9 · confirmed
- Duluth — Oct 4, Canal Park
- Sidney, MT — Oct 5 and 6
- Dickinson or Medora, ND — Oct 10
- Duluth — Oct 11
Entrance fee: $35 per vehicle, good for seven days. The America the Beautiful annual pass is $80 and also covers Theodore Roosevelt on the way home — worth it if you would hit one more park inside a year.
What to pack
- Binoculars. The most important item on this list. Hayden and Lamar are entirely a glassing activity.
- Bear spray — buy in Gardiner, wear it on your hip
- Base layer, fleece, warm waterproof shell, hat, gloves
- Boots with real tread for icy morning boardwalks
- Cooler, thermos, two days of lunches and snacks
- Offline maps downloaded before you enter the park
- Sunglasses and sunscreen — high-altitude sun is stronger than it feels at 40°F
Closures and weather
Hydrothermal explosion in July 2024 destroyed the boardwalk, and it went off again on June 13 of this year, opening new vents north of Black Diamond Pool. Parking lot and boardwalk both closed. It has been cut from this plan.
Confirmed 2026 dates
- Mammoth gas station closesOct 4
- Norris Geyser Basin Museum closesOct 3
- Tower Fall General Store closesOct 4
- Canyon bear spray rental closesOct 10
- Dunraven Pass closesOct 12
- Beartooth Highway closesOct 12
- Old Faithful Inn closesOct 12
- Canyon gasopen thru Oct 31
- Old Faithful gasopen thru Oct 18
- Albright & Old Faithful visitor centersopen
- All interior park roads closeNov 1
- North to Northeast Entranceyear-round
You clear Dunraven by three days. Every one of these is weather-dependent and an early storm can move any of them.
Weather
Mammoth averages 54°F and 30°F in October. Yellowstone Lake averages 47°F and 24°F with about ten inches of snow across the month. Expect at least one day of rain or snow.
Check each morning
- Park roads, recorded307-344-2117
- Park roads, webnps.gov
- Montana roadsdial 511