Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: July 23, 2024

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Waypoints

Start point

Parking

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1.12 km

Gregory Canyon

A rocky, narrow path leads into this valley, best suited for experienced trail runners. Though close to Boulder you feel like in the middle of the back country.

Tip by

3.45 km

Steep ascent between First and Second Flat Iron

Pretty technical and steep uphill section in the middle of the famous Flat Irons. Pick this section for your ascent, it will heavily slow you down when going downhill.

Tip by

7.91 km

End point

Parking

Way Types & Surfaces

Way Types

7.53 km

< 100 m

291 m

< 100 m

Surfaces

6.90 km

720 m

< 100 m

275 m

Elevation

Weather

Today

Thursday 18 September

19°C

10°C

0 %

If you start your activity now...

Max wind speed: 5.0 km/h

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This route was planned by komoot.

Green Mountain Trail Run Loop — Boulder Open Space & Mountains Parks

Gregory Canyon

Steep ascent between First and Second Flat Iron

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