sentences:  The event has grown considerably over the years and now attracts both UK and international runners – it is now known as one of the top events in the Autumn running calendar.Previous participants in Cardiff races include Paralympic champion Dame Tanni Grey-Thompson, GB's most decorated track Olympian Mo Farah, inspirational adventurer Sir Ranulph Fiennes and BBC Radio 1 DJ Scott Mills.In 2018, the Cardiff Half Marathon incorporated the first Commonwealth Half Marathon Championships, with athletes from all over the Commonwealth coming to run in Wales.