marathon goal? "I want to run under three hours but it is getting harder – time and age being two main factors." Then there is the challenge of fending off the charge from the next generation of Roux. "I have started doing sprint and speed sessions with my

Age: 33 Job activity level: Lecturer and mother of two small children; active during the day, with little time spent sitting down. Marathon history: One marathon (2008) Goal: sub-4:30 Current PB: 5

Age: 36 Job activity level: Two to three days per week in an office; other days more active with children and household chores Marathon history: 2 marathons (2007 and 2008) Goal: 3:15 Current PB: 3

Ruth is a leading sports dietician and a member of the British Dietetic Association and Health Professional Council. She is also an advisor to Sportscotland's Institute of Sport, specialising in helping athletes of all levels prepare nutritionally

trained well and has a good nutrition strategy should be able to run even splits throughout a marathon and run the same time for the first half as the second."Fundamentally, your marathon nutrition strategy is to take carbohydrates on board every 40

Age: 43 Job activity level: Driving fork-lift trucks (not active) Marathon history: 12 marathons over the last three years Goal: sub-3:00 Current PB: 3:02 Height: 1.77m Current Weight: 73kg

Age: 45 Job activity level: Works in a shop so on his feet all day Marathon history: Six marathons over a 25-year period Goal: 4:00 Current PB: 4:14:27 Height: 1.75m Current Weight: 77kg. Rob

ASICS Pro Team Nutritionist Ruth McKean joined us recently for a Q&A webchat about nutrition strategies in the lead up to a marathon. Catch up with the highlights.Ruth is a member of the British Dietetic Association and Health Professional Council

Age: 34 Job activity level: Sedentary job, sitting at a desk Marathon history: One marathon (2005) Goal: 3:45 Current PB: 4:00:10 Height: 1.78m Current Weight: 70.8kg Dan's Profile | Dan