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Niwot Trails
Niwot Trail

Niwot Trails

Experience the humbling beauty of the plains on the Niwot Trails. Affording a spectacular mountain view, follow historical irrigation routes through this cottonwood-lined path.

Niwot TrailsHiking Allowed Dogs Allowed Bikes Allowed E-bikes Allowed Horses Allowed
6.4 miles – Easy
Some marked sections are closed to horses

Rules & Regulations

Pets On Leash
Bikes On Designated Trails Only
No Drones
No Hunting/Firearms
No Camping

All Parks & Open Space Rules & Regulations

Lefthand Valley Grange Trailhead

30 car parking spots
2 ADA van accessible parking spots
Restroom near trailhead
50 person group shelter

Monarch Trailhead

10 car parking spots (no designated ADA spots)
1 horse trailer parking spots

Niwot Trailhead

13 car parking spots
1 ADA van accessible parking spot

See Photos

Trail Connections

  • Niwot Trails connects with the Longmont-to-Boulder Regional Trail.
  • Regional trails and regional trail connectors are open to commuters 24 hours per day. Trailheads close at sunset and parking is not allowed between sunset and sunrise.

In the rain shadow of the Rocky Mountains, the Great Plains are dry, windy and expansive. Receiving small amounts of precipitation, the land is dominated by grasses. The scarcity of water generally prevents larger shrubs and trees from growing. The exception is where rivers, streams or ponds exist. In these riparian habitats plant and animal life is more diverse due to the presence of water. Trees, sedges and cattails grow and a variety of mammals, birds, amphibians, reptiles and insects are drawn to the water where temperatures are often slightly cooler than the surrounding lands.


  • Black-tailed prairie dog
  • Coyote
  • Deer mouse
  • Fox squirrel
  • Little brown bat
  • Muskrat
  • Nuttall’s cottontail
  • Raccoon
  • Red fox
  • Striped skunk
  • Western harvest mouse


  • American crow
  • American goldfinch
  • American kestrel
  • American robin
  • American tree sparrow
  • Barn swallow
  • Belted kingfisher
  • Black-billed magpie
  • Black-capped chickadee
  • Blue jay
  • Bullock’s Oriole
  • Canada goose
  • Chipping sparrow
  • Common nighthawk
  • Common grackle
  • Common raven
  • Common yellow throat
  • Cooper’s hawk
  • Downy woodpecker
  • Eastern kingbird
  • Great blue heron
  • Great horned owl
  • House finch
  • House wren
  • Killdeer
  • Mallard
  • Mourning dove
  • Northern flicker
  • Red-tailed hawk
  • Red-winged blackbird
  • Rock dove
  • Sharp-shinned hawk
  • Song sparrow
  • Swainson’s hawk
  • Tree swallow
  • Yellow-breasted chat
  • Yellow warbler
  • Yellow-rumped warbler
  • Western kingbird
  • Western meadowlark
  • Wilson’s warbler

Amphibians & Reptiles

  • Chorus frog
  • Woodhouse toad
  • Western painted turtle
  • Bullsnake
  • Plains rattlesnake
  • Western terrestrial garter snake

Coming Soon

The Name

Chief Niwot (c. 1825-1864) was a tribal leader of the Southern Arapaho people and played an important part in the history of Colorado. Chief Niwot and his people lived along the Front Range often wintering in Boulder Valley, site of the future city of Boulder.

The Trail

In April 2003, the Board of County Commissioners approved a list of 10 prioritized regional trail projects. The Longmont-Boulder Trail was among the top, consisting partly of the Niwot Loop Trail.

Contact Us

Parks & Open Space

Mon-Fri 8 a.m. – 4:30 p.m.
Office Location
5201 St. Vrain Rd.
Longmont, CO 80503
Map & Directions
Office Hours: Mon-Thu 8 a.m. – 4:30 p.m.
Friday by phone, email, or appointment only.
Parks are open sunrise to sunset

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