I was an 800m guy in college so ran 400-3000m in races, I was also big on the weight room so I’ll give you a sample week that isn’t 60-70 miles per week and workouts dialed back a bit so you can focus more on lifting and actually make gains instead of just maintain.
Monday: 12x400m starting at 3k pace working down to mile pace, 2:00 recovery between reps unless you want to jog a lap for recovery. +Upper body lift
Tuesday: 3-5 miles easy
Wednesday: 8x150m or 300-250-200-150-100 about as fast as you can handle with enough recovery that you aren’t losing much pace rep to rep. +Leg day (this will fry your legs)
Thursday: Easy 3 miles and/or 30-40 minute bike/elliptical/swim
Friday: Easy 3-5 miles and a few 50-150m relaxed sprints, 400m pace at the fastest and 600m or less volume total
Saturday: 8-10 mile run at moderate intensity, OR 3xmile or 6-8x800m at 3k-5k pace with 1:1 rest. +Moderate full body lift, 12-20 reps per set kind of stuff and core work
Sunday: off or some easy active recovery like going for a hike or a walk or playing some basketball with friends.
This got me a Nick Symmonds-esque physique at 6’2 and I was fast enough through those distance ranges that I wasn’t embarrassing myself at any of them, and I ran fairly competitively 600m-1500m