The most important thing about track and field is track and field training. Training will help you to not just gain stamina but speed as well. One type of training that can help you is using speed work and 
intervals in your training program.
Speed work and intervals in track and field training can help you to become a faster runner. Just running the same pace all of the time can help you to build stamina but will not do much for your speed. You have to get your legs used to speed for before you can use the speed. There fore you need to run a lot of intervals to gain speed.
The first thing you need to do when you are in track and field training is to decide what race you want to run. If you want to train for 5k race you will need to run intervals of ¼, ½ and ¾ mile intervals. If you want to run a longer distance like a marathon you will need to do intervals of 2 or 4 miles.
Intervals during your track and field training get your legs used to using speed. Running regular intervals while training can help your body to adjust to running at a faster speed for long distances while also increasing your stamina. The more intervals you run at full speed the faster you body will become accustomed to the speed and the more you will be able to use it.
Speed track and field training will take time to learn. You did not start out being able to run very far so why expect to be faster right away but if you work at it diligently you will soon run as fast as you want to. Take small steps when first starting a speed training regime so you do not over extend and gradually increase your distance as well as speed.
Another aspect that should be considered is the shoes you wear for training. The right spiked running shoes can benefit training by keeping your feet firmly planted where they are placed while the wrong shoes can cause you to get hurt by slipping.
Always remember when you are track and field training to always wear the correct running shoes for your type of racing. Not wearing the right shoes can cause injuries to muscles and tendons that can curb your running.
