On your marks, get set, go! Get ready for the big race with our fun range of Marathon fancy dress. Whether you and your friends want group costumes, or individual running outfits, we've got you covered. If you're challenging yourself to a 5K, a half marathon or the full 26 miles, we'll have a novelty costume for you. London Marathon is the biggest in the UK, so you'll want to stand out. Grab something silly and oversized to have a laugh in, or something officially licensed by Disney for the new runDisney trend! There are many costumes here for men and women such as our novelty outfits that are always guaranteed a laugh. Try the Jesus Costume to have faith whilst getting through the crowds. Looking for a couples costume? Everyone will love seeing Bill and Ben stumbling their way through the finish line. For an affordable outfit, try the Nun Kit for a group costume for you and your sisters! If you're after something more outrageous, try scrolling through our Novelty Costume selection here.