Q+A: Can a long bike ride substitute a long run?

Q: Can a long bike ride substitute a long run? Daniel Rickett, Egham

A: ‘Sorry, but no,’ says triathlete and coach Debbie Voiles (mojoforrunning.com). ‘Cycling is an excellent cross-training activity that strengthens your CV system while saving your joints from impact, but the point of the long run is to build endurance, practise your fuel strategy and get your body and mind used to extended time on your feet. Cycling is not a weight-bearing activity, so it won’t stress your body in the same way running does, nor will it stimulate the adaptations that boost endurance.’

Have a question for our experts? Sen your triathlon questions to editor@runnersworld.co.uk.