"We met with MP Chester Borrows and he confirmed Government will be coming to the party," Mr Grant said.
That leaves the trust about $3 million short, a sum it is confident that it can raise.
One way it aims to achieve that is through a Velo5000 club that supporters can join via its website (http://raisetheveloroof.org.nz).
Already Velo 5000 was attracting membership including from out of town.
"We need to stress that this is a regional asset and not just for cycling or in-line skating," Mr Grant said.
There was a large clear area that would be suitable for many types of events and activities.
"This is very positive news for Whanganui and the wider region. It is going to happen and it will be all go from here."