Heart River Trail

Overview

This is Yellowstone backcountry the way it should feel: big lake panoramas, active thermal features, and long, quiet miles. The Heart River Trail is most commonly done as the Heart Lake/Heart River loop, a roughly 32-mile backpack with about 2,427 feet of gain. Expect a true wilderness vibe—fewer crowds than the front‑country boardwalks, real bear country, and a few chilly fords to keep you honest.

Route, Distance & Elevation

Plan on ~32.0 miles total for the loop, with steady ups and downs and a few steeper pitches that feel tougher with a pack. Hikers often break it into 3–4 days. Average moving time reported for strong hikers is around 11.6 hours, but most people backpack it. Depending on your direction and spur choices, you’ll encounter several river/creek crossings—allow time for up to about five on the east side in low‑water seasons and more caution earlier in the year. Water is plentiful; treat everything.

What You’ll See

Heart Lake is the centerpiece—broad, windswept, and backed by Mount Sheridan. The Heart Lake Geyser Basin near the shore has active features (one geyser erupts roughly every 25 minutes). Sections of trail pass post‑fire forest from 1988 with young regrowth and occasional downfall. Wildlife is part of the draw and the risk: grizzly and black bears frequent the area; hikers also note deer and various birds (owls/nighthawks). Leeches are present in Heart Lake—keep swims quick if you choose to take a dip.

Best Time to Hike

The trail is closed annually from April 1 to June 30 for bear management. The sweet spot is July through September when snow is gone and most fords drop to safer levels. Expect intense mosquitoes mid‑summer, especially near water and meadows; long sleeves and strong repellent help. For photography, early and late light plays nicely on Mount Sheridan and across Heart Lake; wind can kick up mid‑day.

Camps & Permits

This is designated‑site backpacking. Secure a backcountry permit for any overnight; the park also requires permits for fishing and boating. Many hikers make it a 3–4 day loop and speak highly of lakeside sites (for example, a site above the lake with big views). Follow the park’s food storage rules at camp—use provided poles/boxes where available or hang properly.

Safety, Regulations & Trail Tips

• Bears: Carry bear spray (1–2% capsaicin), hike in a group, make noise, and keep 100 yards from bears/wolves. If charged, stand your ground and deploy spray; if contact is made, play dead. Store all food/odorous items in bear‑resistant systems.
• Thermal areas: Stay on established tread—thin crusts can be dangerous.
• Rivers: Cold, swift water early season; unbuckle hip belts for fords, face upstream, and consider camp shoes. Don’t underestimate spring runoff.
• Bugs and water: Mosquitoes can be brutal; bring strong repellent. Treat all water.
• Leave No Trace: Bury waste 6–8 inches deep and at least 100 feet from water and trails. No pets, hunting, bicycles, or motorized/wheeled travel on trails.

Bottom Line

If you want Yellowstone’s wild side—geysers without boardwalks, a big backcountry lake, and real solitude—this loop delivers. Come prepared for bears, bugs, and fords, and you’ll get one of the park’s quieter classic backpacks.