Thanks I will have a play around with things at the weekend when I do the coast to coast. Will also research 'egg beaters' and other spd type pedals. I'm in 2 minds for the event I'm training for as to attempt the full thing in the same trainers I'll be running in or change at transition and have cycle shoes / spd. Imhappy enough in toe clips but if cycle shoes n pedals offer a big enough advantage then may be wise to give them a go.