Cat 3

Groton via Halls Brook Road

New Hampshire, united-states

Groton via Halls Brook Road covers 7.3km and 316m of climbing, reaching 459m at the summit. The average gradient of 4.3% disguises ramps of 11.9% — the kind of gradient that turns plans into prayers. Located in New Hampshire, United-states.

  • A false flat around km 3 offers brief respite before the road kicks up again.

Groton via Halls Brook Road

New Hampshire, united-states

7.3km 316m 4.3%
3

Distance

7.3km

Avg Gradient

4.3%

Max Gradient

11.9%

Elevation Gain

316m

Summit

459m

Wall Rating

3.5

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North Groton via Halls Brook Road

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