[3] While a student at Woodham Community Technology College, she won the national cross country running title for her age group in 2006.

In the junior race she came 25th – the third best European behind teammates Lauren Howarth and Charlotte Purdue, which helped the British team to fourth place.

[6] Further international medals followed at the 2009 European Cross Country Championships as she took the bronze and led the British junior women to second in the team rankings.

At the 2010 IAAF World Cross Country Championships she improved from her previous attempt and finished twentieth (second best European behind Gulshat Fazlitdinova).

[9] A return to the continental scene at the 2010 European Cross Country Championships saw her finish lower down the order in twelfth place.

[13] A month later she shared in the under-23 team title with Great Britain at the 2013 European Cross Country Championships, having finished fourth behind teammate Charlotte Purdue.

In 2015, while at Iona, Avery won the Honda Sports Award as the nation's best female collegiate cross country runner.

She came ninth in the 3000 m at the 2014 European Team Championships then made her debut for England at the 2014 Commonwealth Games, running a personal best of 32:33.35 minutes to come fourth in the 10,000 m (beaten only by Kenyan opposition).

Aiming for a top ten placing, she ran hard from the front and was rewarded with a silver medal after losing a close finish to teammate Gemma Steel.