Gels are expensive, and when you are training for a full or half marathon the price adds up, not mention that many gels give runners stomach issues- this DIY homemade Portable running fuel for runners is a great Runner Hack, each packet is only pennies, and you can perfectly measure the calories. For more info on how to fuel properly for a race visit the site. Running motivation
Run training for 5k to 10k to half marathon (13.1 miles). I just wish it had one more increment of 15k between 10k and the half plans. I also like the plans that are running only and if I add the strength or cross training that's even better, but I don't like it scheduled into the plans.