The NSW government has promised to double its spending on bike and pedestrian paths and, in a strategic move to protect a very marginal seat, announced a new cycleway along Centennial Park.

Transport Minister Andrew Constance said the government, if re-elected, would more than double its funding of "active transport" to $330 million over five years and spend another $285 million on paths through infrastructure projects such as the South West Metro.

The Eastern Suburbs Cycleway will be a fully separated cycleway that will connect Bondi and the CBD. Credit:Brook Mitchell

"We've taken our commitment to supporting cycling, particularly in the city, to a different level, we're committing over $600 million and a lot of it is about trying to separate cyclists and pedestrians from the dangers of traffic," he said.

One of its first projects is to build a cycleway along the northern edge of Centennial Park, "filling in a missing link" for cyclists travelling between Bondi Junction and the CBD.