03 · Colorado, USA

Mesa Trail

Traverse Boulder's rolling foothills beneath the Flatirons.

Trail runningOne wayHard
BOULDER
USA

City of Boulder Open Space and Mountain Parks

39° 59' N
105° 17' W
10.6 kmDistance522 mElevation gainEasy mediumSite gradeBoulderNearest base

Site grade

Easy mediumFeatured · Book difficulty: Hard

The official grade understates the cumulative challenge for runners: the trail is long, rolling, rocky in places and exposed to altitude and fast weather changes.

The experience

At more than 1,600 metres above sea level, accumulated rollers and rocky footing make the traverse more demanding than its modest distance suggests.

Nearly every canyon trail on Boulder's mountain backdrop connects into this single north-south spine.

Where the sources disagreeThe Wikiloc result is a nearby route, not the canonical traverse; use the official OSMP map and live status as the route authority.

Trail path

The line
you follow.

StartChautauqua trail systemFinishSouth Mesa TrailheadDirectionSouthbound editorial direction; reversible
  1. 01Chautauqua
  2. 02NCAR connection
  3. 03Bear Canyon connection
  4. 04Shanahan connections
  5. 05South Mesa

Route sections

01 · Under the First FlatironChautauqua to NCAR connection
Forest and meadow transitions introduce the rolling pattern.02 · Canyon LinksNCAR connection to Bear Canyon
A sinuous middle section with multiple junctions and uneven footing.03 · Ponderosa RollersBear Canyon to Shanahan connections
Repeated rises and dips beneath the foothill peaks.04 · The Southern ReleaseShanahan connections to South Mesa
The trail opens toward prairie and the South Boulder Creek corridor.

Weather profile

What the sky
is likely to do.

Semi-arid foothill weather with strong sun, rapid temperature shifts, winter ice and summer thunderstorms.

Season & timing

Managed seasonYear-round, subject to closures and trail conditionsBest windowDry spring or autumn mornings; avoid muddy trails and exposed thunderstorm windows.SurfaceDirt trail, rock, gravel road and short stepped sectionsDirectionSouthbound editorial direction; reversible

Signature moments

What you will
remember afterwards.

01

Flatirons views

02

Ponderosa forest

03

Open meadows

04

Canyon junctions

05

South Mesa prairie

OFFICIAL LENGTH

6.6 MI

One trail connects Boulder's canyon system

OSMP describes Mesa as long, sinuous, hilly and varied, with links to nearly all canyon trails along the mountain backdrop.

Access & logistics

AccessUse Chautauqua or South Mesa access and arrange a shuttle for a one-way traverse.PermitsNo individual running permit identified; comply with OSMP rules and closures.BookingsNone for the trail; parking or shuttle planning may be required.WaterCarry all needed water; no dependable on-trail supply is documented.FoodCarry what you need.Mobile coverageVariable against the foothills.

Key hazards

  • ▲Lightning
  • ▲Mud and closure-sensitive trail damage
  • ▲Ice or snow
  • ▲Altitude and dehydration
  • ▲Dense junction network

SafetyOrientation only. Always use current official maps, alerts and safety guidance.

Check official conditions →Request this run →

Official sources

Last verified 2026-07-28 · Record CETC-RUN-003 · Orientation only. Always use current official maps, alerts and safety guidance.