Cat 4

Islisberg from Bonstetten

Zurich, switzerland

At just 1.7km, Islisberg from Bonstetten is short but deceptively intense — 135m of elevation packed into a brief, breathless effort. Averaging 7.9%, the road kicks to 15.6% at its steepest — a brutal pitch that demands respect. It's over before the legs know what happened — a short, explosive effort where momentum is everything. Located in Zurich, Switzerland.

  • The crux hits between km 1 and km 1 — 2km above 10% averaging 12.8%.

Islisberg from Bonstetten

Zurich, switzerland

1.7km 135m 7.9%
4

Distance

1.7km

Avg Gradient

7.9%

Max Gradient

15.6%

Elevation Gain

135m

Summit

680m

Wall Rating

3.9

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What things cost

Typical prices in Switzerland

CHF5.50

Coffee

CHF7.00

Beer

CHF25.00

Meal

CHF3.00

Water

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Common Questions

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4