Castricum's Atletiek Vereniging invites runners of all ages to participate in the annual Oosterbaan Strand- & Duinlopen and Parnassia Groep Run on October 25, 2026. This event offers a variety of distances ranging from short family-friendly options to longer routes that showcase the stunning Noord-Hollands Duinreservaat. The race starts and finishes at AV Castricum's athletics track located along Zeeweg in Castricum. Participants can expect scenic views as they run through sand dunes, past picturesque landscapes of coastal vegetation, and even enjoy sections of the beach during longer distances like the 15 km route. Registration for this event is open until October 23, 2026, with on-site registration available at a higher rate from Saturday afternoon leading up to the race start. Payment via bank card is not accepted on the day of the event, and no refunds are provided in case of cancellation due to unforeseen circumstances. The Oosterbaan Strand- & Duinlopen offers five distances: 1 km for youth (U8-U9), a family-friendly 2.2 km option, a scenic 4 km run through dunes and meadows, the challenging 10.1 km course that includes beach sections, and an extensive 15 km route covering diverse terrain within the duinreservaat. For those looking for shorter distances, there's also the Parnassia Groep Loop with options of 1 km (U8-U9), a quick 2 km run, a scenic 5.2 km loop through dunes and woodland areas, and a competitive 10 km race that takes runners on an invigorating journey around Castricum's coastal surroundings. Prizes are awarded to the fastest adult finishers in the longer distances such as the 4 km, 10.1 km, and 15 km races with tangible gifts from Oosterbaan Alkmaar. In addition, all youth participants receive a commemorative item, while medals go to top performers within their age categories. Parking is not available near the athletics track but can be found approximately 400 meters away at PWN's visitor center De Hoep. Runners are encouraged to check AV Castricum’s website beforehand to ensure that chosen routes match individual experience and gear requirements, making this event suitable for everyone from young children with their parents to seasoned runners seeking a challenging course. Join the Oosterbaan Strand- & Duinlopen on October 25, 2026, for an unforgettable day of running through one of Holland's most beautiful natural settings.
Races Offered
1 km jeugd
Oct 25, 2026
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1K
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10.1 km
Oct 25, 2026
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10.1K
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15 km
Oct 25, 2026
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15K
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2.2 km jeugd
Oct 25, 2026
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2.2K
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2.2 km recreatie
Oct 25, 2026
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2.2K
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4 km
Oct 25, 2026
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4K
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4 km jeugd
Oct 25, 2026
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4K
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Weather History
These values represent the 3-year monthly averages for October in Castricum.
thermostatTemperature
10.9° / 15.1°
wb_sunnyFeels like
7.1° / 12.0°
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Avg sunshine hours
5h 44m
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Avg rainfall
4.2 mm
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Avg snowfall
—
air
Avg wind speed
18.4 km/h (Gentle breeze)
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Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Low (2.8)
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Humidity
83.3%
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Sunrise
08:08
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Sunset
18:44
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