The Secret Green Trails Singaporeans Keep to Themselves

Singapore has 350 kilometres of park connectors. Most visitors never find more than a fraction of them. The ones who do tend to keep quiet about it.

The city's National Parks Board, known as NParks, has quietly expanded the island's green corridors over the past decade, and the results are measurable. Weekend foot traffic at marquee destinations like the Singapore Botanic Gardens UNESCO World Heritage site along Cluny Road has climbed sharply since 2022, according to NParks data. Meanwhile, the trails threading through Chestnut Nature Park, the Zhenghua Park connectors in Bukit Panjang, and the Rifle Range Road entrance to the Central Catchment Nature Reserve see a fraction of that volume — and regulars who use them intend to keep it that way.

Why does this matter right now? July is one of Singapore's more bearable months for outdoor exercise. Average daily highs hover around 31 degrees Celsius rather than the brutal 34-degree peaks of May, and the inter-monsoon lull means fewer sudden downpours cutting a run short. Health promotion campaigns this year from the Health Promotion Board have pushed Singaporeans toward 150 minutes of moderate physical activity per week — a target far easier to hit when green space feels accessible, not crowded.

The Trails the Algorithm Won't Recommend

Chestnut Nature Park, accessible off Chestnut Avenue in the Bukit Timah area, is arguably the most underrated fitness destination on the island. Split into a northern and southern section connected by a bridge over the Pan Island Expressway, the 81-hectare park offers mountain bike trails graded for different abilities, plus forest hiking paths with genuine elevation. On a weekday morning it is almost meditative. Compare that to the MacRitchie Reservoir boardwalk on a Saturday, where the TreeTop Walk alone draws enough visitors to make the 250-metre suspension bridge feel like an MRT platform.

Further north, the Mandai Track 15 — a gravel firebreak trail running off Mandai Road near the zoo precinct — is a long-standing favourite among serious trail runners. The 10-kilometre loop is unmarked on most tourist maps and requires navigation through secondary forest. NParks asks users to check the OneMap platform before heading out, as sections are periodically closed for maintenance. Entrance is free, which matters when you consider that a single-entry ticket to Gardens by the Bay's cooled conservatories now costs $32 for adults.

Down in the east, the Pasir Ris Park mangrove boardwalk off Pasir Ris Drive 3 offers something genuinely different: coastal wetland walking that doubles as a low-impact fitness route. The 6.5-hectare mangrove zone sits inside a park that most visitors associate with the beachfront barbecue pits and the water park next door. The boardwalk is shaded, flat enough for older residents to manage comfortably, and takes roughly 25 minutes at a brisk pace — enough for a meaningful active recovery session after a harder week of training.

Making a Routine Out of It

The practical case for building these trails into a regular fitness schedule is straightforward. ActiveSG's network of outdoor exercise stations — including free equipment installed in HDB estate parks under the Residents' Committee partnership scheme — means locals can string together a strength component before or after a trail walk without spending anything. The NParks Park Connector Network app, updated in late 2025 with improved routing features, maps connector paths between most of these sites.

Timing matters. Both Chestnut and Mandai trails are best before 8am or after 5.30pm on weekends. Weekday mornings between 6am and 7.30am see mostly regular joggers and retirees doing their laps — the crowd most likely to nod and step aside rather than stop for a selfie in the middle of the path.

None of this requires special gear or a fitness subscription. Decent trail shoes, two litres of water, and the NParks website checked the night before covers most scenarios. For anyone uncertain about exertion levels, particularly in the heat, a chat with a GP or polyclinic sports medicine service before starting a new outdoor routine is the sensible first step.