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Project 321

Project 321

Gareth planned a bike ride

May 9, 2026

Project 321

Hard

29:45

516km

17.4km/h

1,210m

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Overview

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The route includes a crossing by ferry.

Temporary access restrictions

Includes segments with temporary access restrictions.

After 41.8 km for 287 m

Open: • January 9-December 22, Monday-Friday: 6:30 AM-8:45 AM & 12:30 PM-6:00 PM • May 13-September 17, Public holidays & Saturday & Sunday: 11:00 AM-5:45 PM (otherwise closed)

Most people would complete this in 5-9 days

Better plan each individual stage of your adventure with the multi-day planner — available as a part of komoot Premium.

Waypoints

View of the Maeslant Barrier

Highlight • Viewpoint

The Keringhuis of De Maeslantkering is a delta work that offers protection against high water. The Delta Works can handle a tidal wave of five meters. On top of the …

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87.9 km

Cycle Path Along the Mark

Highlight • Cycleway

Nice sloping cycle path along the river Mark

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190 km

Cycling Through the Water

Highlight • Bridge

The cycle path through the water leads cyclists over a 212-meter-long and three-meter-wide concrete path, with water at eye level on both sides. Swans and other waterfowl swim along the …

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