Canada Running described the Reid's 5000 meter race this way:
In the women’s 5,000m Tarah Korir put up an excellent fight, leading the first nine laps of the twelve-lap race. Korir was passed by fellow Athletics Toronto athletes Sheila Reid and Megan Brown, who sailed into the finish with times of 16:15.23 and 16:16.44 respectively. Reid holds the Olympic “B” standard in this event and could be eligible to compete under the Rising Star status should Athletics Canada deem the one “B” standard enough.
Evidently, Athletics Canada did not deem one "B" standard sufficient to name Reid to the squad, even though she won the event at the Trials. Indeed, the decision by Athletics Canada to leave her off the Olympic team was appealed, but that appeal was rather quickly denied. As a result, Canada will send no woman to London in the 5000 meters. Villanova fans will recall that Carrie Tollefson won the 2004 US Trials at 1500 meters, had only the "B" standard, and by virtue of her Trials victory was the sole US representative in that event at the 2004 Games, despite there being other American women who held the "A" standard and who finished in the top three at Trials. Winning the Trials with a "B" standard was deemed sufficient in that case. In addition, Marina Muncan, another former Villanova All-American, was named to the Serbian team last week as the country's sole 1500 meter representative once she attained the "B" standard. In Tollefson's case, the USATF respected the Trials enough to name its winner to the team, even if it meant leaving off the team two other women who had already run the "A" standard. In the Muncan case, having someone represent the country in the 1500 meters was important enough for the Serbian Olympic authorities, despite their choice not having the "A" standard.
At bottom, Reid just missed the "A" standard at both 1500 meters (4:06.00 -- Reid ran 4:07.77) and at 5000 meters (15:20.00 -- Reid ran 15:23.64) and was forced by the Trials schedule to pick one event to gain a spot on the Olympic team. With two "A" standard women in the 1500 meters, neither of whom had any incentive to run fast at the Trials (they'd make the team merely by finishing in the top three, no matter what the time), Reid opted for the 5000 meters. She won the race -- and the Canadian national title -- but in a time that was neither a "B" (as required by the Rising Star provision) nor an "A" (which would have guaranteed her a spot on the team). At the end of the day, Reid came tantalizingly short of a spot in two events.
The athletes chosen for the Canadian squad are listed HERE.