The 2012 Boston Marathon is set for Monday, April 16th, but this year the weather may prevent many runners from making the 26.2 mile journey from Hopkinton to Boston. Temperatures are expected to be in the 80s, and sunny skies are forecasted. The temperature is expected to be well into the 70s at the start of the race.
The Boston Athletic Association, the marathon's governing body, has warned runners who have not trained properly or who may be less experienced that it is a good idea to sit this one out. That's why they are allowing runners the chance to defer this year's marathon until next year.
High intensity running in hot weather means that hydration will be of paramount importance. Runners should maintain hydration at levels slightly above training levels to avoid heat illness. Common signs of heat illness include confusion, fatigue, nausea, headaches, dizziness, and vomiting. Runners should also be cautioned about overhydration, which could lead to hyponaturemia.
If you are running in this year's marathon, consider carefully your current level of training and if perhaps a deferment until next year is the best idea