For an American such as Shalane Flanagan, victory could mean a massive payday.
There is money set aside for top overall runners and top Americans.
The Boston Marathon is losing a legendary leader.
Olympic bronze medalist and American-record holder Deena Kastor will be there.
A total of $2400 is up for grabs for middle-of-the-pack and back-of-the-pack runners.
American money is to equal the open total, while the wheelchair total increased to $8500.
Twenty-four hundred dollars is up for grabs.
An end-of-race mix up forced the real winner to turn the wrong way.
An additional $10,000 awaits the first runner to cross the finish line.
The national champion will net $10,000.