Parking
There is no drive-up parking at either end. The north start is the Heart River–Trail Creek junction; the south end meets Snake River Canyon Trail. Reach both on foot through the surrounding backcountry trail network.

Yellowstone National Park, WY · MT · ID
A remote river corridor with several unbridged fords.
Overview
Map & elevation
Plan your hike

The highest, rockiest slopes around here are a summer buffet for grizzly bears.
Yellowstone Tour Guide
Parkwolf is a GPS audio tour guide for Yellowstone National Park. As you drive, it chimes in with what’s ahead: hidden gems, upcoming stops, history, geology, and wildlife, right through your car’s speakers.
See the Yellowstone audio tourTrail guide
Heart River Trail is a 5.8-mile point-to-point backcountry route from the Heart River–Trail Creek junction to the Snake River Canyon Trail junction. The listed distance is one way. The route follows the Heart River corridor through Yellowstone’s remote southeast backcountry, with stream-side stretches among meadows and conifers. Allow about three and a half hours for this segment, then add the time and miles needed to reach and leave either end.
Several unbridged stream fords are part of the route, and water depth and current can change the effort quickly. Check Yellowstone’s current backcountry report before setting out; this route has no quick road exit. For overnight travel, Yellowstone requires a backcountry permit and a designated campsite for each night. Pets aren’t allowed on Yellowstone hiking trails.
The north end meets Trail Creek Trail; the south end joins Snake River Canyon Trail. Neither is a road-side trailhead, so reach them on foot through a longer backcountry itinerary. Walking this segment back the other way makes it 11.6 miles total, before any approach or exit miles. There are no services at either junction.
Wildlife
713 sightingsGrizzly BearMost seen around 6 AMSighting map
743 sightingsWolfMost seen around 6 AMSighting map
5,273 sightingsBisonMost seen around 7 AMSighting map
3,258 sightingsElkMost seen around 7 PMSighting map
397 sightingsMooseMost seen around 7 PMSighting map
1,494 sightingsBlack BearMost seen around 7 PMSighting mapSighting maps show where each species has been reported across Yellowstone. Wildlife moves, so no sighting is guaranteed.
Keep exploring
ChallengingMount Sheridan Trail7.2 mi · 6 hr · 3.5 mi awayHeart Lake and the Tetons spread out below this remote summit.
ChallengingTrail Creek Trail21.7 mi · 12 hr · 3.5 mi awayA long backcountry link from Heart Lake to the Thorofare.
EasySnake River Canyon Trail2.5 mi · 1.5 hr · 6.3 mi awayAn easy river-valley connector in Yellowstone's remote backcountry.
ChallengingSouth Boundary Trail: Harebell–Fox Creek11.1 mi · 6.5 hr · 7.9 mi awayEleven remote miles between a patrol cabin and the Snake River.
ChallengingHeart Lake Trail15.5 mi · 9 hr · 8.9 mi awayA long day reaches a lake below Mount Sheridan.
ModerateLewis River Channel/Dogshead Trail10.8 mi · 6.5 hr · 9 mi awayTwo lakes and a river channel, with little climbing.
EasyRiddle Lake Trail4.8 mi · 2.5 hr · 10 mi awayA mostly level walk to lily pads and Mount Sheridan views.
ChallengingPitchstone Plateau Trail16.3 mi · 9 hr · 10.1 mi awayA long point-to-point hike over Yellowstone’s young lava plateau.Parkwolf’s Yellowstone ranking