Once the old KTM railway line, now a continuous green artery running much of the length of the island, the Rail Corridor is the answer to "where do I do my long run?" Flat, traffic-free and rustic, it's a rare stretch where you can settle in for hours.
The run
This is a distance-runner's route: flat, largely gravel or hard-packed, and long — piece together anything from 10K to a 20K-plus point-to-point along the restored corridor. The lack of road crossings on the core sections is exactly what a long effort needs.
Why runners love it
Uninterrupted rhythm. Where most Singapore routes force you to stop-start at junctions, the corridor lets you zone out and run. The restored Bukit Timah Railway Station is a highlight and a natural landmark to start from, and the greenery makes the kilometres tick by.
What to know before you go
Surfaces are mixed and can be soft or muddy after rain, shade is patchy on open stretches, and water points are limited — carry your own for anything long. (verify current open sections; portions periodically close for works.)
Getting there
Spans north–south; the Bukit Timah Railway Station area is a popular, accessible start. (verify access/parking.)
Run it with a crew
Long runs are better with company. Find a distance crew that bases weekend long runs on the corridor via ATHLO+ — someone always knows which sections are open.