One of the signature spots for running in Macau is on the dedicated path along the Taipa Waterfront. There are great views of the Macau peninsula along this wide, tree-lined path. There’s some lovely landscaping in sections. The total distance is 3.3 km one-way. A good place to start is Monument Garden. The path goes for south of there for 1 km, or 2 km north, winding around Sai Van Bridge, past a seaside park, to the “Old Bridge” (Praia Grande).
Longer Run: It is possible to run over the Old Bridge (but not the Sai Van Bridge), which is 2.5 km one-way. It’s quite something going over the water, and the sidewalk along the bridge is narrow, but it is runnable.