I guess it all depends on your aims and what intensities you do them at
take Ironman triathletes as an example - swim, then 180km bike followed by a marathon. for the top male pros they will (course dependant) knock that bike leg off in under 5 hrs and will then knock out a sub-3 marathon. but they are trained for those intensities and you'll probably find that their stand alone marathons are probably around 2:15 - 2:30 so not hugely faster
my best for those is a 5:30 bike followed by a 4:54 marathon - my marathon PB is sub-4. so quite a big run difference time. so for your average person, cycling does affect run speeds if the 2 are combined.
but otherwise, yes, cycling will help your running overall as it's another form of exercise with benefits as it's non-load bearing so less detrimental to most. but it's getting the balance right that's key and it takes time to get to know what works
I've always found it a lot easier to run after cycling long distance to the other way around, I think running puts a lot more strain on you muscles!
Visit the official Runner's World page
Follow Runner's World on Twitter
Other Natmag-Rodale Sites
Run For Charity
About Runner's World
Runner's World is a publication of Hearst Magazines UK which is the trading name of The National Magazine Company Ltd, 72 Broadwick Street, London, W1F 9EP. Registered in England 112955. All rights reserved.
Website powered by: Immediate Media Company Ltd. | © Runner's World 2002-2013 |