Ava Griggs sped to a superb second place in the Great School Sprint final in Manchester earlier this month.
The Springfield School talent clocked a personal best of 14.24sec in the national 100m contest screened live on BBC Sport.
East Cheshire’s Favour Joseph won the battle on Manchester’s Deansgate in a blistering time of 13.95 – also a lifetime best for the distance.
The Great School Sprint formed part of the Great CityGames, which was celebrating its 10th birthday this year and featured Harry Aikines-Aryeetey and former world 400m champion Bershawn Jackson among its winners.
Griggs, who competes for City of Portsmouth, earned a shot at the national crown with victory in one of four regional finals.
The 12-year-old clocked 7.31 to win the southern qualifier hosted at Portsmouth Tennis Centre in October.
Birmingham, Newcastle and Manchester hosted the other three city finals.