Mo Farah will run over 1,500 metres at the Aviva 2012 Athletics Trials later this month to hone his finishing speed ahead of the Olympics.
The world 5,000m champion is aiming for a 5,000m and 10,000m double at the Games in London this summer, but will step down in distance to race in a heat and final on consecutive days against metric mile specialists.
The 29-year-old will compete on June 22 and 23 at Birmingham's Alexander Stadium.
"Running the 1,500m at the Aviva 2012 Trials is a great chance for me to work on my speed and tactics in a championship format, over two days," the United States-based athlete said. "At the Olympics I'll need to recover as quickly as possible between races, so running two races back to back will be good preparation."
Farah, who won 5,000m gold and 10,000m silver at last year's World Championships, leads the world rankings in the shorter distance, while he is also currently the British number one over 1,500m after clocking three minutes 34.66 seconds in California last month.
If that is an indication of the depth of his talent, he is still not expecting an easy ride at the trials, with Ross Murray and Andy Baddeley having also run the Olympic 'A' standard.
"The great thing about these Trials is that there are Olympic places at stake with every athlete competing for London 2012 qualification," Farah said. "Everyone will be fighting to finish in the top two. I'm expecting a really strong battle with the 1,500m specialists."
UK Athletics head of endurance Ian Stewart backed Farah's decision to run over 1,500m.
"Mo has demonstrated time and time again that he is one of the best distance runners in the world," he said.
"I agree with Mo that running the shorter race at the Aviva 2012 Trials is the right move for him at this stage of his preparations for the summer. I'm looking forward to seeing what he can do at the trials."