If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. It’s gun time for the London Marathon on Sunday. One of six Abbott World Marathon Majors, the London Marathon features a landmark-heavy route, which winds along the River Thames and ends outside Buckingham Palace. It’s also famous for participants’ eclectic running costumes, which are often tied to charity efforts. The event draws millions of spectators,