Join team brainstrust’s mission to help people with a brain tumour at the  Great South Run. The AJ Bell Great South Run is probably the world’s favourite 10-miler, with inspiring history, salty air and glorious sea views guaranteed. Portsmouth’s supporters will keep your spirits and motivation up the whole way round, with blaring music, cheers, high fives, fist bumps all part of the incredible AJ Bell Great South Run experience. Plus, there’s a medal, exclusive finisher t-shirt and bragging rights at the finish line. There’s a reason 99% of runners say they’d recommend it to a friend – lots of reasons, in fact.  Closing date for registration is 27th August 2026.