I will hopefully get my "hydration pack" tomorrow. I would like to test it tomorrow as well, by running 5.6 miles (my standard distance to bookstore and back) with it and drinking from the tube etc.
Is this a good idea to run for 5.6 miles, given that I have a race on Sunday. Or should I run less.
Specificity. The most specific thing to running a half marathon is running a half marathon. Therefore you should go out and run 13.1 miles.