However long you've been running, and whatever your age or ambition, chances are you'll have questions. How can you improve your race times? What's the perfect race day diet? How can you avoid overtraining? Well, now you can pose your questions

Q. I want to practise my nutrition for race day but my trainer says I should wait until a few weeks before the race so I get the maximum benefit - is he right?A. It's imperative that you experiment during training to find out what will work best

brain, a proper nutrition plan may take a back seat.But proper nutrition is central to your training and to race success. By fuelling correctly and ensuring you're hydrated before, during and after training, you will perform and feel better and still

, and it is also one of the few courses in the UK to offer the option of either individual or relay entry. Individuals can chose from three distances, while the relay sees two or three women teaming up for the Challenge distance. The race starts with a swim

are and therefore what to emphasise in your training. A good way to do this is to note your personal best times from 1500m to marathon and compare them with equivalent times for different races using this race time calculator. If your PBs are comparatively better

yourself before and after a session. (One kilogram of weight loss is equivalent to one litre of fluid.) Once you know your sweat loss you can prepare your fluid-replacement strategy for training and races.Pre-planningFor an event such as Ironman Nice ensure

, it will benefit your longer race performances and give your training a completely fresh focus. Look at the great 5K and 10K runners, such as Haile Gebrselassie (whose mile PB is 3:52.39), and you'll find their mile times are very respectable."Joe Rubio, creator

can be tricky, so practise by teaming up with a training partner and learning from each other's mistakes. Youtube also has some good examples of cycle dismounts if you need some visual how-to tips. 

You've trained wisely and eaten well - but you just can't shake those pre-race nerves. So how can you work on mental preparation? To find out, I teamed up with researchers from Sheffield, Oxford, Manchester, Reading and Wolverhampton universities

to leave a few surprises for race day, but you shouldn't.Knowing something about the course can be invaluable. Training on the course can help if you're nervous about the great unknown. Saffron Webber from Horsham, West Sussex, is training for the Banana