Garigal National Park

Overview

Garigal National Park is a 2,202-hectare reserve about 20 km north of the Sydney CBD, protecting the Middle Harbour Creek valley and its sandstone tributaries across Sydney's Northern Beaches and North Shore. It is the closest "real" national park to central Sydney with sanctioned mountain biking, which is why MWMBC riders treat it as the de-facto after-work park — most trailheads are inside 30–40 minutes' drive of the CBD. ([1], [5])

The headline MTB feature is Bantry Bay: the Gahnia (2.15–2.25 km) and Serrata (1.35 km) singletracks are NSW's first purpose-built, mountain-bike-only trails inside a National Park. They were designed by Garry Patterson of TrailScapes and hand-built across sandstone outcrops in 2014–2015 to address long-standing illegal trail building in the area. Both are rated blue/intermediate (IMBA "more difficult"), 600 mm wide, and combine technical rock features with multiple line options on a tight sandstone bench. ([2], [3], [4], [9])

Beyond Bantry Bay, the park's broader trail network — fire trails like Cascades, Heath, Bare Creek and Engravings around Belrose, St Ives and the Oxford Falls valley — is shared-use (walkers, horses, bikes) and accessible directly from suburbs like Forestville, Frenchs Forest and Davidson. The DB tally of 60 visible trails (60 named segments, with 11 blues and 9 blacks/double-blacks) reflects this layered network rather than just the two purpose-built singletracks. ([6], [7])

Location & Access

Address: Garigal National Park, Northern Sydney, NSW 2087 (Forestville Office: 82 Ferguson Street, Forestville NSW 2087)
Region: Sydney and surrounds (Northern Beaches / North Shore)
Drive times: ~30–40 min from Sydney CBD (~12 km to nearest Bantry Bay trailheads); ~15 min from Manly; ~45 min from Parramatta
Public transport: No direct PT to trailheads. Forest Coach Lines / B-Line buses serve Forestville and Frenchs Forest within walking distance of Currie Road and Grattan Crescent access points.
Parking: Free street parking at most MTB access points — Currie Road (Frenchs Forest) for Serrata; Grattan Crescent / Ararat Reserve (Forestville) for Gahnia; Cascades, Bare Creek and Oxford Falls trailheads similarly free street/reserve parking. Davidson Park (picnic/boat-ramp area) is the only fee-paying entry: $8/day per vehicle. ([1], [3], [7])
Coords: -33.7074, 151.2717 (existing DB value — consistent with park centroid near Bantry Bay)

Best Season & Conditions

Peak riding season: Autumn (March–May) and spring (Sept–Nov). Sydney's mild winters mean rideable year-round.
Wet-weather impact: Sandstone trails drain fast but sandy corners get scoured by rain — NPWS explicitly asks riders to avoid wet trails to reduce damage. Some shared fire trails (Heath, Bare Creek) get rutted post-rain.
Fire-danger / total-fire-ban impact: Park may close on extreme fire-danger days during the NSW bushfire season (Oct–Mar). Check NPWS alerts before riding.
Snow / alpine season: N/A (coastal Sydney).
School-holiday surge: Weekends and afternoons can be busy on the popular Bantry Bay singletracks; midweek is quiet. Shared trails (Cascades, Heath) get walker/runner traffic on weekend mornings — yield etiquette matters.
Daily hours: Park gates close — and riding is prohibited — outside 6 am to 6:30 pm (extended to 8 pm during daylight saving). Night riding is explicitly prohibited. ([1], [3])

Managing Body & Trail Builders

Land manager: NSW National Parks and Wildlife Service (NPWS) — Sydney North Branch, Forestville Office (02 9451 3479; npws.sydneynorth@environment.nsw.gov.au).
Trail builder / designer: TrailScapes Pty Ltd (Garry Patterson) designed and hand-built the Gahnia and Serrata trails for NPWS, 2014–2015.
Local club / advocacy: Manly Warringah Cycling Club (MWMBC mountain biking section) — runs informal rides, advocates for trail access and maintenance, works with Council and NPWS. The "Garigal Gorillas MTB Club" name also appears on Trailforks as a trail-care contributor.
Volunteer / dig days: Coordinated through MWMBC and NPWS; contact MTB Coordinator via manlywarringahcc.org.au.
Donations / membership: MWMBC membership at https://manlywarringahcc.org.au/ride-with-us/mountain-biking/

History & Background

Gazetted: 19 April 1991, primarily to protect the area's extensive Aboriginal heritage. ([5])
Name origin: "Garigal" derives from Carigal / Caregal, the name used for the Indigenous people of the area. The Guringai people are traditional custodians. ([5])
Aboriginal heritage: Over 100 recorded Aboriginal sites — cave art, rock engravings, shelters, middens, grinding grooves and a possible stone arrangement. ([4], [5])
Colonial history: The Bantry Bay Explosives Magazine complex (early 20th century) and Governor Phillip's 1788 expedition route to Bungaroo both lie within park boundaries. ([4])
MTB development: The Gahnia and Serrata trails opened in mid-2015 as a landmark first-of-kind project — mountain-bike-only singletrack inside a NSW National Park — partially funded by NPWS and built by TrailScapes after a heritage assessment of the Bantry Bay corridor. They are credited with significantly reducing illegal trail building in the area. ([2], [3], [11])

Sources

Garigal National Park (NPWS) — https://www.nationalparks.nsw.gov.au/visit-a-park/parks/garigal-national-park — accessed 2026-05-19
Gahnia and Serrata mountain bike trails (NPWS) — https://www.nationalparks.nsw.gov.au/things-to-do/cycling-trails/gahnia-and-serrata-mountain-bike-trails — accessed 2026-05-19
Gahnia and Serrata — Visitor info (NPWS) — https://www.nationalparks.nsw.gov.au/things-to-do/cycling-trails/gahnia-and-serrata-mountain-bike-trails/visitor-info — accessed 2026-05-19
Gahnia and Serrata — Learn more (NPWS) — https://www.nationalparks.nsw.gov.au/things-to-do/cycling-trails/gahnia-and-serrata-mountain-bike-trails/learn-more — accessed 2026-05-19
Garigal National Park (Wikipedia) — https://en.wikipedia.org/wiki/Garigal_National_Park — accessed 2026-05-19
Heath and Bare Creek trails (NPWS) — https://www.nationalparks.nsw.gov.au/things-to-do/cycling-trails/heath-and-bare-creek-trails — accessed 2026-05-19
Itinerary: Gahnia and Serrata mountain bike trails near Manly (NPWS Stories) — https://www.nationalparks.nsw.gov.au/get-inspired/stories/itinerary-gahnia-serrata-mountain-bike-trails-near-manly — accessed 2026-05-19
Bantry Bay (Garigal NP) Mountain bike trails (TrailScapes) — https://trailscapes.com.au/projects/bantry-bay-garigal-np-mountain-bike-trails — accessed 2026-05-19
Places that Rock: Bantry Bay (Australian Mountain Bike) — https://www.ambmag.com.au/feature/places-that-rock-bantry-bay-440962/ — accessed 2026-05-19
Manly Warringah Cycling Club — Mountain Biking — https://manlywarringahcc.org.au/ride-with-us/mountain-biking/ — accessed 2026-05-19
Bantry Bay heritage assessment (NSW Office of Environment & Heritage) — https://www.environment.nsw.gov.au/-/media/OEH/Corporate-Site/Documents/Parks-reserves-and-protected-areas/Parks-management-other/garigal-national-park-appendix-c-proposed-mountain-bike-track-bantry-bay-heritage-assessment-1.pdf — accessed 2026-05-19