In reply to norrisdan71:
Specific plans address specific needs and your question is about as vague as it can get!
To answer the questions usefully it might help to consider these:
How long until the event?
What's your current fitness level?
What's the gap between current fitness level and your aims for the event?
How much time do you have to train? What does a typical week look like?
What's your previous training volume?
What type of training has worked for you in the past?
What's your injury/ health history?
How much £ are you willing to spend?
What weaknesses do you have compared with the demands of the event?
If you're after really specific, a coach might be the best way forward.