38 years old (Born on March 06, 1987)
Happy birthday, Hannah! You're still running circles around the rest of us mere mortals—let's be honest, that incredible silver medal finish at the 2011 World Championships is forever iconic. They say time flies when you're speeding through middle-distance tracks; luckily your legacy remains as enduringly impressive (and timeless) as ever.From representing Team GB in Beijing during the unforgettable excitement of the 2008 Olympics to continually setting records and inspiring aspiring athletes everywhere—you've always managed grace under pressure beautifully. May this year bring you countless victory laps filled with cake-fueled celebrations because even world-class runners deserve extra slices today!