Team CLS Hills 'n' Thrills Racing Series is all about the hills and pacing yourselves over some of Zwifts toughest courses. Everyone leaves at once in this event a bit like a Sportif so be careful not to get carried away as this one is all about arriving at the climbs and giving it your all, any gaps can be quickly closed down if people blow up ahead of you. We will be running a League for this on a rolling 3 month basis.