If you're looking for a unique challenge and if you like dressing up in silly costumes, then the Great Gorilla Run in the heart of London in September could be just what you’re looking for.

More than 1,000 people will don their gorilla suites on 26 September for a 7km flat route which takes in famous sights such as Tower Bridge and The Tate Modern.

The entry fee is £80 and this includes the cost of your gorilla suit (in medium, large and extra large) that you can customise - think ballerina-, disco- or policeman-gorilla! And there will be a prize for the biggest team or 'gorilla family'.

Minimum sponsorship is £400 - proceeds go to The Gorilla Organization, which aims to save the remaining 720 mountain gorillas left in the wild. The first Great Gorillia Run was held in 2003 and advocate Bill Oddie describes it as "the most fun event for conservation going on anywhere in the world." Details: www.greatgorillas.org/london