McClintock Lower Trail

Boulder Open Space and Mountain Parks · 0.19 mi one way · about 5 min

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One file with the route sketch, numbers, mapped facilities and a checklist, for when you have no signal. It does not include map tiles, conditions or closures.

Route view:
Distance0.19 micomputed
Elevation gain46 ftcomputed
Elevation loss11 ftcomputed
Est. time5 minNaismith's rulecomputed
Highest point5,766 ftcomputed
Lowest point5,709 ftcomputed
Route typeNot a loopone way or out and backunknown
SurfaceUnknownunknown
DifficultyUnknownunknown
StartEnd50 mN
Schematic preview drawn from the trail geometry. No basemap yet; do not use for navigation. Start = circle, end = square.

Overview

McClintock Lower Trail is mapped as a trail of 0.19 mi in Boulder Open Space and Mountain Parks. It is not a loop: you walk it one way or out and back.

It runs between 5,709 ft and 5,766 ft above sea level, a difference of 58 ft.

Mapped along or near the trail: 1 viewpoint.

Dogs are tagged as not allowed.

Estimates

  • Computed effort band: easy (from length and climb; not an official difficulty).
  • Estimated time 5 min one way by Naismith's rule, which assumes steady walking and adds time for climbing. Real time varies.

Before you rely on this

  • Water points are mapped nearby, but mapped is not tested or guaranteed: treat any water and carry your own.
  • Check the land manager for closures, seasonal rules and permits before you go; none of that is verified here.
Effort: easyNo dogsViewpoints

Elevation

5,709 ft5,738 ft5,766 ft00.19 mi

Hover, tap, or use the arrow keys on the chart to read a point; it is shown on the map too.

Elevation along the trail from start (left) to end (right) as drawn. Values are computed from USGS 3DEP 1/3 arc-second DEM (public domain), sampled about every 10 m and smoothed. No sustained section is steeper than about 12%.

Before you go

Parking
14 parking areas mapped near the start (nearest about 24 ft away). Fees and limits are not included. mapped by OpenStreetMap contributors
Trailhead and directions
Start at 39.99728, -105.28020. Directions to the start ↗
Permits and fees
We have no verified permit or fee details. Official pages: Boulder Open Space and Mountain Parks ↗, Boulder ↗, Boulder County ↗. not verified
Dogs
No dogs mapped by OpenStreetMap contributors
Water
2 drinking-water points mapped nearby. Mapped is not tested: treat water and carry your own. mapped by OpenStreetMap contributors
Toilets and facilities
4 toilets, 1 shelter, 2 picnic sites mapped. mapped by OpenStreetMap contributors
Accessibility, bikes and horses
No bikes mapped by OpenStreetMap contributors
Seasonal rules, closures and hazards
Not verified here. Check the land manager (Boulder Open Space and Mountain Parks ↗) and read the hiker condition reports below. No report does not mean the trail is open or safe. not verified

Weather at the trailhead

Sat75° / 48°Sunny0% precip
Sun73° / 48°Mostly Sunny0% precip
Mon69° / 48°Mostly Sunny4% precip
Tue72° / 50°Mostly Sunny3% precip
Wed75° / 53°Sunny1% precip
Thu75° / 53°Partly Sunny then Slight Chance Rain Showers17% precip
Fri74° / 48°Chance Rain Showers39% precip

Today: sunrise 7:13 AM, sunset 6:18 PM (computed from the trailhead location).

Forecast for the trailhead area from the U.S. National Weather Service, updated Oct 17, 12:46 AM. Mountain weather changes fast and can differ a lot by elevation: check the official forecast for your route before you go.

Recent conditions

Reports come from Arête members, not from land managers. They show when something was seen, not whether it is still true. Check official sources before you go.

No condition reports in the last 30 days. Conditions are unknown, not necessarily good.

Reviews

No reviews yet, so there is no rating to show. We never invent ratings. Sign in to be the first to review this trail.

Photos and places from hikers

Added by community members and checked by our team before they appear. Photos have their location data removed. These are not official information.

No approved photos or places yet.

Along the way

Sights

  • Viewpoint0 ft from start
    Tour Stop 40 OSM ↗

Water

  • Drinking water (mapped)0 ft from start
    drinking water fountain OSM ↗
  • Drinking water (mapped)0 ft from start
    Unnamed OSM ↗

Mapped by OpenStreetMap contributors. Not tested or guaranteed: springs can dry up and water must be treated. Carry enough water.

Trailhead and facilities

Parking and toilets shown are within about 0.25 mi of the trail start.

Points come from OpenStreetMap contributors and can be missing, moved or out of date. How we label data.

Nearby trails

Data, sources and how the numbers are made
Length0.19 micomputed
Route typeNot a loopunknown
SurfaceUnknownunknown
DifficultyUnknownunknown
Elevation gain (as drawn)46 ftcomputed
Elevation loss (as drawn)11 ftcomputed
Estimated durationabout 5 min one way as drawn (Naismith's rule)computed
Official verificationNot verified by an official sourceunknown

Length is measured from the route geometry in the source data, so it can differ from signed or official distances. Gain and loss describe the direction the line is drawn; the route view above shows the other direction and out and back. Elevation is computed from USGS 3DEP 1/3 arc-second DEM (public domain), sampled about every 10 m and smoothed.

© OpenStreetMap contributors (ODbL). Overpass API extract: Boulder County, CO (hiking relations + named paths). Licence: ODbL 1.0. Data version osm-2026-10-16, imported 10/17/2026. View the source record · Improve this trail on OpenStreetMap ↗ (free account needed; corrections reach us on the next import)

Frequently asked questions

How long is McClintock Lower Trail?

McClintock Lower Trail in Boulder Open Space and Mountain Parks is 0.19 mi long, measured from its route geometry in OpenStreetMap data. Signed or official distances can differ.

How much elevation does McClintock Lower Trail gain?

Walking from the start to the end as drawn, it climbs about 46 ft and descends about 11 ft, between 5,709 ft and 5,766 ft. These are computed from the USGS 3DEP elevation model and can differ from other apps; the other direction swaps climbing and descending.

How hard is McClintock Lower Trail?

Difficulty is unknown: no source we use rates this trail, and we don't guess. Use the length and elevation gain to judge it for yourself.

How long does McClintock Lower Trail take?

About 5 min one way for a fit hiker, by Naismith's rule from the length and climb. It is an estimate: allow more for rest, photos, heat, altitude and weather.

Where does McClintock Lower Trail start?

The route starts near 39.9973, -105.2802 (Boulder Open Space and Mountain Parks, Boulder, Boulder County). Use the Directions button to open it in your maps app.

Are dogs allowed on McClintock Lower Trail?

Dogs are tagged as not allowed in OpenStreetMap. Rules can change by season and by land manager, so check posted signs and the official page.

Is there water, parking or a toilet at McClintock Lower Trail?

Mapped in OpenStreetMap near this trail: 2 water points, 14 parking areas, 4 toilets. Mapped water is not tested or guaranteed: carry your own. Fees and permits are not included here; check the official page.

Trail data can be wrong or out of date, and Arête is not an emergency service. Check official sources, weather and closures before you go.

Directions