About $130 million has been spent since 2015 on 126 projects, including a new footbridge in Ottawa, a bikeway in Halifax and trails in Grouse Mountain Regional Park in Vancouver.
But McKenna says those projects competed directly against public transit initiatives for the same pool of cash.
The new $400 million for the program is coming out of the $14.9 billion, eight-year public transit plan Prime Minister Justin Trudeau unveiled last month.
But this money can only be used for active transportation projects.
"There wasn't a separate active-transportation fund," she said in an interview with The Canadian Press.
"It's really a recognition that this is linked to public transportation."
Building better public transit networks with electric buses and light-rail systems is fantastic but not everyone is going to live right next to such a network, said McKenna.
In Ottawa, she noted, the new light-rail system will eventually bring a train to within five kilometres of about 80 per cent of the city's residents.
"But we need to get them to it," she said.
Building pathways so people can bike to trains instead of driving their cars is good for everyone, said McKenna.
She is also working on a national active-transportation strategy and launching public consultation to help guide its development this week.
This report by The Canadian Press was first published March 12, 2021.
Mia Rabson, The Canadian Press