Last year's winner Mick Kinane features among an elite group of ex-jockeys confirmed for the third running of the John Smith's Aintree Legends Charity Race on Grand National day.
The 13-time Irish champion jockey partnered the Paul Nicholls-trained American Trilogy to win the one-mile-five-furlong contest last April and has since made it two from two in such events in a 'Legends' race at Doncaster's St Leger meeting.
Tony Dobbin, who won the 1997 Grand National aboard Lord Gyllene, claimed the first running of Aintree's charity race in 2011 and will also be be back for more in the contest that opens the National card on April 6.
The 12 participants have ridden nearly 17,000 career winners between them and the previous two runnings raised over £160,000 for the Bob Champion Cancer Trust.
Brothers Michael and Richard Hills, Kevin Darley and George Duffield all join Kinane from the Flat racing scene, while the line-up is completed by Adrian Maguire, Marcus Armytage, Jim Culloty, Hywel Davies, Jimmy Frost and Carl Llewellyn.
Champion said: "The John Smith's Aintree Legends Race has now seen two great winners with Tony Dobbin in 2011 and Mick Kinane last year.
"Once again, we have a fantastic line-up of both jumps and Flat legends. This day more than any other will always be special for me and I can't think of a more fitting way to celebrate my 1981 Grand National win or my triumph over cancer than with this race and raising much-needed funds for the Bob Champion Cancer Trust."
Richard Hills said: "I have never been to Aintree before, let alone ridden there, and I am very much looking forward to being part of such a terrific line-up of jockeys and raising money for Bob's very worthy charity."
Adrian Maguire said: "Last year Mick Kinane sneaked a win for the Flat boys so this year we shall be doing everything we can to return the trophy to its rightful home and one of us jumps boys!"
On the fund-raising front, each individual jockey can have a corporate sponsor and members of the public can sponsor the race or their favourite jockeys at www.bobchampion.org.uk and via Just Giving pages.
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