How to fuel your long runs
The most important part of fueling your runs is not getting behind on your intake. This means:
Taking a gel every 30-45 minutes during runs over 60 min
Take your gel over a few minutes for maximal absorption/digestion
Gels should be taken with water otherwise they sit concentrated in your belly...this can cause nausea
Use caffeinated gels with caution, they can cause stomach upset.
Bring water & electrolytes (salt) on runs over 45min-60min
Aim to take in 400-600mg of salt per hour on long runs
If you sweat a lot, or are running in the heat/humidity, try 500-700mg of salt per hour