Tracy Barlow is a British long distance runner. She has represented Great Britain in the marathon at the 2017 World Championships in Athletics and 2018 European Athletics Championships. Her marathon best of 2:30:42, set in 2017, ranks her in the UK all-time top 25.

The 2016 London Marathon was the 36th running of the annual marathon race in London, England, which took place on Sunday, 24 April. The men's elite race was won by Kenyan Eliud Kipchoge and the women's race was won by Kenyan Jemima Sumgong. The men's wheelchair race was won by Marcel Hug from Switzerland and the women's wheelchair race was won by American Tatyana McFadden.