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.
1.0 mile – Easy
0.8 miles – Easy
|Hidden Star Trail
1.5 miles – Easy
Some marked sections are closed to horses
|Legend Ridge Loop
1.5 miles – Easy
|Niwot Hills Trail
0.6 miles – Easy
1.3 miles – Easy
1.1 miles – Easy
Rules & Regulations
- 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.
Hidden Star Trail Detour
A section of the Hidden Star Trail will be closed March 13 – April 7 for a culvert replacement project. Severe erosion under the Hidden Star Trail pedestrian bridge has created unstable conditions. Staff will install a new culvert and repair the bridge supports. Please use the posted detour.
Lefthand Valley Grange Trailhead
- Black-tailed prairie dog
- Mule deer
- Red fox
- Barn swallow
- Blue jay
- Great horned owl
- Northern flicker
- Red-winged blackbird
- Say’s phoebe
Amphibians & Reptiles
- Bull snake
Trees and Shrubs
- Choke cherry (Prunus virginiana)
- Cottonwood (Populus deltoides)
- Golden current (Ribes aureum)
- Peach leaved willows (Salix amygdaloides)
- Evening Primrose (Oenothera biennis)
- Wild licorice (Glycyrrhiza lepidota)
Western Interior Seaway
Eighty million years ago this entire area was covered with a great inland sea, the Western Interior Seaway, and evidence of this ancient sea is abundant along parts of the Niwot Trails. The sandstone formations found here were deposited in this sea and trace fossils are still here showing where marine organisms made their burrows.
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.
These trails follow along historic ditch routes and wind through neighborhoods of Niwot, allowing access for many residents to wild areas just steps away from home.
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.