Great Britain marathon runner Lee Merrien is confident he can secure a high finish at the 2012 Olympics.
The 32-year-old from Guernsey was originally told he had not been selected despite setting a personal best at last month's London Marathon.
But Team GB selectors had a change of heart and picked him for London 2012.
"I was in my best ever shape for London and if I can put myself in that sort of shape again then I'm confident I'll finish high up," he told BBC Guernsey.
"I plan to do well, I'm confident that I'll race well.
"I've pulled it off in my previous marathons and I fully expect to put in a good performance in the GB vest and representing Guernsey at the same time."
Merrien is back in training after his London effort and will travel to the Pyrenees for altitude training later in the summer.
"I'm in a very familiar position to be honest. This is the third year I've run the London Marathon and then a championship marathon in the same season, although it is the Olympics rather than any other competition.
"It's been a nice stepping stone for me really, so I have no concerns in terms of the time factor and turning it round that I can run well at the Olympics, as it's something I've already done for two year previous."
Though short of the 2:12 'A' qualifying standard, Merrien's London Marathon time of 2:13:41 was the fastest by a Briton this year, and prompted an internet campaign to persuade the selectors to review their decision not to make him part of the Great Britain team.
"When I got selected it was incredible, the support I had was overwhelming. A home Olympics isn't even once-in-a-lifetime, the last time was over 50 years ago, so it's pretty special."