Teylingerlaan, S - Gravendamseweg, Van Panhuysstraat and Boekenroodeweg Loop

This is a long, flat, lowland loop of roughly 57 km / 35 mi with essentially 0 m / 0 ft of elevation gain, stitched together by a chain of named roads and residential streets. Expect a “Dutch-distance day” rather than a “hill day”: the challenge is time on feet, wind exposure, and staying fueled/hydrated on a route that can feel deceptively easy underfoot.

A practical place to treat as the start/finish is by Slot Teylingen (Teylingen Castle), Teylingerlaan 15A, 2215 RT Voorhout (South Holland)—a well-known landmark right on Teylingerlaan and an intuitive navigation anchor for a loop like this. (en.wikipedia.org)

Getting to the start (public transport + car)

• By train: Aim for Station Voorhout. From there it’s a straightforward walk to the castle area to pick up Teylingerlaan. (Station Voorhout is commonly listed as the nearest rail access for the Voorhout/Teylingen area.) (postcode.site)
  
• By car: Drive toward Voorhout / Slot Teylingen and park in the vicinity of the castle/Voorhout edge where local parking is available; this area is built-up enough that you’ll typically find street parking or small lots, but always check local signage and restrictions.

What the terrain feels like (and why it still matters)

Underfoot, you’ll mostly be on paved roads, cycle paths, and firm, level surfaces typical of the Duin- en Bollenstreek (Dune and Bulb Region)—excellent for steady pacing, but repetitive on joints over 35 miles. (visitduinenbollenstreek.nl)
Because the route is so flat, the “difficulty” comes from: - Wind (headwinds can turn an easy pace into a grind) - Exposure (less shade in open agricultural stretches) - Distance management (blisters, hot spots, and nutrition timing)

Plan this like an all-day outing: many hikers will take 10–14 hours depending on breaks and pace.

Route character and key sections (with planning distances)

Because this loop is defined by multiple named roads, it helps to think of it in broad legs. Use HiiKER to keep the line clean at junctions and to avoid accidentally following a parallel cycleway in the wrong direction when roads split.

1) Teylingerlaan and the castle landscape (first ~5–10 km / 3–6 mi)

Starting near Slot Teylingen, you’re immediately in a landscape where history sits right beside modern village life. Slot Teylingen is a 13th-century brick castle ruin (a classic “water castle” form), and the municipality itself is named after it. (en.wikipedia.org)
This early section is ideal for settling into rhythm: keep your pace conservative and let your feet warm up before the longer, more open legs.

What to look for - The castle grounds and surrounding green corridors - Canal-side and field-edge walking typical of South Holland’s managed lowlands

2) Open bulb-region corridors and long straightaways (middle ~20–30 km / 12–19 mi)

As you move away from the immediate village core, the route character becomes quintessential Duin- en Bollenstreek: a mix of polders, bulb fields (seasonal), and long, efficient paths. (visitduinenbollenstreek.nl)
In spring, this broader region is famous for tulips, hyacinths, daffodils, and other bulb crops—outside bloom season, it’s still a big-sky agricultural landscape with wide sightlines. (visitduinenbollenstreek.nl)

Practical cautions - Wind management: if it’s breezy, consider a slightly slower pace into the wind and “bank time” with fewer stops. - Foot care: at roughly 20–25 km (12–16 mi), stop briefly to check for hot spots—flat routes often create repetitive friction patterns.

3) Residential connectors: Van Panhuysstraat and services access (later ~5–15 km / 3–9 mi)

When the loop threads through more built-up areas (including streets like Van Panhuysstraat, which is found in **Noordwijk