Thornleigh to Cowan
  • Length: 35.9km

  • Duration: 2 Days

  • Grade: 4

  • Style: One way

  • Start: 88 The Esplanade, Thornleigh

  • End: 1135 Pacific Hwy, Cowan

  • Location: Berowra Valley National Park

  • Closest Town: Thornleigh

  • Distance from CBD: 26.2 km

  • State: NSW

  • Latitude: -33.73194881

  • Longitude: 151.0781477

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2WD Access

4WD Access

Public Transport

Bitumen Road

Gravel Road

Steep Road

Winding Road

Speed Bumps

Vehicle Ford

Entry Fee

Large Car Park

Small Car Park

Accessible Parking

Accessible Toilet

Public Toilets

Drinking Water

Untreated Water

Picnic Shelter

Picnic Table

BBQ Facilities

Campfire Pit

Camping Area

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Berowra Valley National Park...

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Concrete Path

Timber Boardwalk

Gravel Path

Sandy Trail

Rough Trail

Undefined Trail

Prams & Strollers

Manual Wheelchair

Motorised Wheelchair

Bicycle Trail

Mountain Bike Trail

Historic Rail Trail

Dog Friendly

Urban Walk

Coast & Beach

Historic Lighthouse

Waterfalls & Lakes

Rainforest Walk

Goldfields & Mining

Heritage Walk

Aboriginal Art

Alpine Region

Alpine Huts

Exposed Ledges

Rock Scrambling

Steep Terrain

Bush Bashing

River Crossings

Scenic Viewpoints

Well Marked

Drinking Water

Untreated Water

Fishing Spots

Swimming Spots

Overnight Campsites

Trail Running

Horse Riding

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Thornleigh to Cowan is a 35.9km, grade 4 One way hike located in Berowra Valley National Park, New South Wales. The hike should take approximately 2 days to complete.

Hike Summary

Following the Great North Walk and Berowra Creek through Berowra Valley Regional Park this walk cuts straight through the length of the Park. The views are good providing a broad idea of what this park has to offer. Conserve your energy for the section between Berowra Waters and Cowan as there are several solid hills. You can refill the tummy in Berowra Waters with a couple cafes to choose from. Note this walk was re-routed in early 2016 to go via the streets of Hornsby Heights. This re-route is due to the multi-agency decision to close the Fishponds to Steele Bridge section of the Benowie Track. This decision has upset many people and the protest continues.


Download maps and tracknotes for Thornleigh to Cowan hiking track from wildwalks.com.

About the region

The Berowra Valley National Park is a protected national park that is located in northern Sydney, New South Wales, Australia. The 3,884-hectare national park is situated approximately 20 kilometres north-west of the Sydney central business district. Berowra Valley National Park is always open but may have to close at times due to poor weather or fire danger Crosslands Reserve is open 8am to 7.30pm during daylight savings and 9am to 5pm the rest of the year Barnetts Road Reserve and the lookout is closed from sunset to sunrise.

Hikes Nearby

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