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Mallard Lake Trail: hiking from Old Faithful, Yellowstone

Yellowstone & Grand Teton • Wyoming

Photo: NPS/Jim Peaco, domaine public, via Wikimedia Commons

An out-and-back trail from the Old Faithful area in Yellowstone National Park, Wyoming: you cross the Firehole River, pass Pipeline Hot Springs, then climb through forest to Mallard Lake. Plan on 3 to 6 hours on foot, and leave the dog at home: pets are not allowed on the trail.

11.2 km
Distance
3-6 h
Duration
Dogs
Not allowed

Ready to explore Mallard Lake Trail? Here's everything you need to know before you go!

Discover the trail

1 community photo

Photos: NPS/Jim Peaco — Domaine public (Wikimedia Commons)

Trail description

Mallard Lake Trail starts in the Old Faithful area, in the Upper Geyser Basin of Yellowstone National Park (Wyoming). According to the National Park Service (NPS), it is a there-and-back trail of about 7 miles (11.2 km): you return the way you came, to the same trailhead.

The route

The trail crosses the Firehole River, passes Pipeline Hot Springs, then climbs rolling hills of partly burned lodgepole pine and open, rocky areas to the lake. The NPS describes it as a "moderately easy" hike and gives 3 to 6 hours.

Getting to the trailhead

From the southeast side of the Old Faithful Lodge cabins, take the first right turn and continue 0.2 miles (0.3 km) across the Firehole River, according to the NPS. An information kiosk marks the trailhead.

Before you go

  • Dogs: pets are not allowed on the trail (NPS).
  • Reservations and fees: no reservation is required and the NPS lists no activity fee for this trail; park entrance fees may apply.
  • Season: the NPS lists the trail for winter, summer and fall, at any time of day.
  • Bears: the NPS asks hikers to be aware of bear activity. On the trailhead page it recommends hiking in groups of three or more, carrying bear spray and staying 100 yards (91 m) from bears and wolves.
  • Rivers: park rivers are swift and cold, and river crossings are hazardous, the NPS says.
  • Overnight: a permit is required for overnight camping. The Center Backcountry Office can be reached at 307-344-2160.
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Recommended gear for this trail

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Ready to go?

Everything you need to know before you go

Where?

Address
Not available
GPS coordinates
44.4584409, -110.8224367
Phone
Not available

Starting Point

From the southeast side of the Old Faithful Lodge cabins (Old Faithful area, Upper Geyser Basin), take the first right turn and continue 0.2 miles (0.3 km) across the Firehole River. Source: NPS.

When?

Opening hours
No information
Weather (next days)
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What to bring?

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General hiking tips, to adapt to your outing.
Gear
Download the PDF checklist
Water & food
Tip: bring water
Good to know
Park rules
No dogs
In an emergency
Emergency
911
GPS coordinates
44.4584409, -110.8224367

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FAQ - Frequently asked questions

Everything you need to know
Allow about 3-6 h for Mallard Lake Trail (11.2 km).
No, dogs are not allowed on the trails of Mallard Lake Trail.
From the southeast side of the Old Faithful Lodge cabins in the Old Faithful area: take the first right, then continue 0.2 miles (0.3 km) across the Firehole River, according to the NPS.
The trail crosses the Firehole River, passes Pipeline Hot Springs, and climbs rolling hills of partly burned lodgepole pine and open, rocky areas to Mallard Lake (NPS).
The NPS lists no reservation requirement and no activity fee for this trail; park entrance fees may apply. A permit is required for overnight camping (Center Backcountry Office: 307-344-2160).
The NPS asks hikers to be aware of bear activity, to hike in groups of three or more, to carry bear spray and to stay 100 yards (91 m) from bears and wolves.
The NPS lists the trail for winter, summer and fall, at any time of day. Conditions change: check the NPS backcountry conditions page or ask locally before you go.
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Update : November 2026