The Lyndhurst Foundation is expected to fund $200,000 in additional bike share stations around Chattanooga.
Officials said the gift is still pending action by the Lyndhurst trustees.
It will fund four or five new spots to rent bicycles.
Macon Toledano, associate director at Lyndhurst, said the bike share program has proven a success and is in need of expansion.
Blythe Bailey, city transportation director, said the new stations would be along high-use areas along the Riverwalk.
That includes near Chickamauga Dam as well as serving the new extension of the South Chickamauga Creek Greenway starting at the Riverwalk.