The prodigious growth of running clubs, fuelled by young women, has seen the popularity of the event sky-rocket The prodigious growth of running clubs, fuelled by young women, has seen the popularity of the event sky-rocket T here is always magic in the air on a London Marathon morning. But this year the event promises to dazzle and soar more than ever. A world-record 59,000 people will take part in Sunday’s race, raising close to £100m for charity while swallowing 93,024 Lucozade gels from