Coacher guy wrote:Back to the OP, that's an easy workout for 8th graders. 3x mile or 5x 1k is a better idea. That's what the kids winning the race are doing. At least that much.
Most of the kids winning the high school races are the ones who swam, cycled, or played soccer, basketball, baseball, football, frisbee, etc on a regular basis in middle school. Not the ones who ran hard distance workouts regularly at age 13.
3x1600 or 5x1k is a really good way to make middle schoolers hate running.
If you have kids running 20 - 25 miles a week with the occasional workout (I'd say keep the intervals shorter if you can, and if you want a workout with volume, go with fartlek type things--long intervals just bore kids that age) the kids with athletic backgrounds and some talent will be running around 2:15 / 4:55 by the end of season. That's plenty fast enough to do well on a middle school level, and the kids will have enough of a base to be successful--and will not bored with running--by the time they hit high school.
The best male high school runner I ever trained with went around 48/1:50 (4/8) as a senior. In 8th grade he ran 2:11 and 4:50 (8/16). As a middle schooler he played basketball and soccer, but only ran track in 8th grade, and only because his friends forced him to--he ran under 20 miles a week, but had fun doing it and thus continued with track freshman year. He and his friends ended up being some of the most dedicated runners I knew, and all ended up stronger athletes for it.
The best female high school runner I ever trained with went something along the lines of 4:45/10:10 (16/32). Her primary sport was soccer up until her junior year of high school, and although she ran track in middle school, she only went about 5:35 (16)--good, but not the sort of thing that suggested the times she would eventually run. She built up her mileage very slowly over the course of her running career, probably hitting a max of about 45 MPW her senior year.
Another one of the best female runners I ever trained with went 54/2:15 (4/8), and the team's head coach and I always felt she could have run closer to 2:05 if she'd ever been willing to run the 8 (the first time she ever ran the event as a freshman she went something like 59/76--it was enough to make her never touch the event again, although it could have undoubtedly been her strongest). In middle school she played soccer, ran 2 - 3 miles a few times a week, and had a 400 PR of about 65.
Let the kids learn to love running. If you're coaching middle schoolers, have at least one or two fun days a week. Give kids time to explore the field events in addition to running, and think about long term development rather than short term success.