You can maybe work on intervals of sprints for 2-3 minutes... tabata training is great for that sort of work

But if you're running for longer than 15-20 seconds then it can't be a sprint.

Sprinting is the maximimuim effort that you can produce, which means it's fueld by the Creatine-Phoshphate energy system... this can only provide energy for about 15-20 seconds max.

Don't get me wrong, you have the makings of a good foundation of training, especially at 17... but if you can run at a speed for the length of a round then it's not a sprint.

What would be more effective would be tabata running for the length of a round... when you've got the basic work and ret peroid already... but you can further advance on that by mimicing cloer to the rythm of a fight.

2 Minute round:
Sprint for 20, jog for 10
Sprint for 20, jog for 10
Sprint for 20, jog for 10
Sprint for 20, jog for 10

Rest 1 minute;
Jog/walk

there is a lot of stopping and starting in boxing, this mimics it pretty well in terms of energy systems.