There’s a nice gravel path around the Bedok Reservoir, a former sand quarry in the eastern section of Singapore, toward the airport. It’s one of the more popular recreation areas in Singapore. The loop around the reservoir is 4.3 km (2.6 miles), with water views for most of the route. There are water fountains and bathrooms. The path is fairly open, so be cautious about the sun and heat.
Add-Ons: For a longer run, extend from the southern part of the reservoir into Bedok Park, a linear green space that extends for up to 3.4 km. There are separate cycle and pedestrian paths.