Green Mountain via Gregory Canyon
A loop to the top of Boulder's most iconic mountain.
Severe Trail Running
- Distance
- 7.7 km
- Ascent
- 707 m
- Descent
- 707 m
Go trail running in Boulder with curated guides of the best trail runs across the region. With over 16 3D trail maps in FATMAP, you can easily discover and navigate the best trails in Boulder.
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A loop to the top of Boulder's most iconic mountain.
Severe Trail Running
A quintessential Boulder trail run.
Severe Trail Running
Linking the central flatiron run to green summit and down bear canyon
Extreme Trail Running
A scrambly jaunt to the top of the First and Second flatirons.
Severe Trail Running
One of the most famous trails in Boulder, leading to a natural arch via a rough, rocky ascent.
Difficult Trail Running
An iconic trail run above Boulder.
Difficult Trail Running
Amazing technical running with sustained 5.5 climbing to the summit of Tower 1
Extreme Trail Running
Regancy, RA, Fifth Flatiron, HippoHead to the Summit of Green
Severe Trail Running