Hi there,
The bike you have should be pretty effective having a blend of thinner tyres which are fast than big knobbly ones as you would expect.
You have the range of gears to get you up the hills too.
I would perhaps advise on spending money on a comfortable saddle as on long rides you'll really notice any discomforts that a saddle gives.
With regards to your diet it's difficult to say without knowing some of your stats but I would say that to lose weight and build fitness you need to combine diet with exercise......as you are wanting to do.
Plenty of fruit and veg, protein and carbs for energy with sufficient intake of fats.
I would eat cereals too as they contain vitamins you need. Do you have a sedentary job? If so...do you need to eat as much as your are doing?
Diffuclt to say much more without knowing more about you.
With regards to exercise advise I would start off gently and don't over do any exercise straight away. You'll get fitter before the weight drops off.
You may want to consult your doctor before you carry out strenuous exercise.
To be honest you should be fine covering those distances. Just ease into the miles each week and try to cover a certain distance per week....then say 10 miles more the next week and so on.
You only need to go along at your pace......and if you need to stop to rest then do so...its perfectly fine.
Maintaining energy and fluid levels whilst training and doing longer rides is essential. Always take plenty of fluids on board and do this before you feel thirsty...or you will suffer with cramps and then run out of energy completely. Carrying snacks and whatever food you can carry on longer rides will help keep energy levels up.
Long steady rides will help you with your endurance too.....just pace yourself and feel comfortable at the pace you are doing. Your endurance Will come to you quite quickly.
Above all though, enjoy yourself. Look forward to the events ahead...be prepared and set yourself just one realistic goal. If its only to finish then so be it. Be proud of what you have done and then set yourself a new target for the future.
