So how would that warmup routine fit in with the bulk of the running?
Here are three examples of 2-week periods (leading up to races) for a good journeyman college 5k runner (who hit 14:21 indoors and 14:08 outdoors) during the very early indoor season, for the middle of the season and for the peak of the season (schedule does not include secondary runs of two-a-days):
Early season
Su Medium length easy run
M Warmup jog, drills/strides, 3 x 15 min. starting @ high-end pace (easier than a focused "tempo" effort), progressing to tempo pace, then to crest load pace (about the pace for a 40-42 min. race) / 2-3 min. rest periods, 4 x 150m @ 24-ish / 45 secs. rest periods, cool-down jog
T Medium length easy run
W Warmup jog, reduced drills/strides, 60 min. progression to high-end pace (about 35 min. at high-end pace), 3 min. rest, 6 x 15-20 secs. progressively faster buildups, cool-down jog
Th Medium length easy run
F Warmup jog, drills/strides, 8-10 x 1,000m starting @ 3:10-ish and progressing -> sub-3:00 / 60-90 secs. rest periods, cool-down jog
Sa Medium length easy run
Su Medium length easy run with a few light to medium speed buildups included near the end
M Warmup jog, reduced drills/strides, 60 min. progression to high-end pace (about 35 min. at high-end pace), 3 min. rest, 6 x 10-15 secs. progressively faster buildups, cool-down jog
T Medium length easy run
W Warmup jog, drills/strides, 20 x 400m @ 74-ish -> 66-ish / 40-45 secs. rest periods, cool-down jog
Th Medium length easy run
F Short to medium length easy run with a few light to medium speed buildups included near the end
Sa RACE
* That's 3 days with full drills and 3 days with reduced drills (including the RACE day) in this 14-day period
Mid-season
Su Medium length easy run
M Medium length easy run with a few light to medium speed buildups included near the end
T Warmup jog, drills/strides, 2 x 20 min. @ high-end/tempo pace / 3 min. rest periods, 4-6 light to medium speed buildups, cool-down jog
W Medium length easy run
Th Medium length easy run with a few light to medium speed buildups included near the end
F Warmup jog, drills/strides, 5 x 1,600m @ 4:50 -> sub-4:35 / 2:30 rest periods, cool-down jog
Sa Medium length easy run
Su Warmup jog, reduced drills/strides, 45 min. light progression to high-end pace (about 20-25 min. at high-end pace), 3 min. rest, 6 x 15 secs. progressively faster buildups, cool-down jog
M Medium length easy run
T Medium length easy run with a few light to medium speed buildups included near the end
W Warmup jog, drills/strides, 4 x 400m @ 70 -> 62 / 1 min. rest periods, 3 min. break after last rep, 4 x 800m @ 2:16 -> 2:08 / 1:30 rest periods, 3 min. break after last rep, 2 x 300m accelerations / 2 min. rest periods, cool-down jog
Th Medium length easy run
F Short to medium length easy run with a few light to medium speed buildups included near the end
Sa RACE (underdistance)
* That's 3 days with full drills and 2 days with reduced drills (including the RACE day) in this 14-day period
Late season
Su Medium length easy run
M Warmup jog, reduced drills/strides, 45 min. light progression to high-end pace (about 20-25 min. at high-end pace), 3 min. rest, 6-8 x 100m progressively faster buildups, cool-down jog
T Medium length easy run
W Warmup jog, drills/strides, 2 x 2,000m @ 5:50, 5:45 / 3 min. rest between each, 5 min. walk/jog after last rep, 3-4 short strides, 2 x 1,200m @ 3:20, 3:15 / 3 min. rest between each, cool-down jog
Th Medium length easy run
F Warmup jog, drills/strides, 2 x 20 min. @ high-end/tempo pace / 3 min. rest periods, 4-6 light to medium speed buildups, cool-down jog
Sa Medium length easy run
Su Medium length easy run with a few light to medium speed buildups included near the end
M Warmup jog, drills/strides, 4 x 400m @ 72 -> 64 / 45-50 secs. rest periods, 3 min. break after last rep, 4 short strides, 1 x 1,000m @ 2:38, 4 min. walk/jog, 2 x 300m accelerations / 2 min. rest periods, cool-down jog
T Medium length easy run
W Warmup jog, reduced drills/strides, 3 miles light progression to high-end pace, 3 min. rest, 4 x 400m @ 72 -> 66 / 1:30 rest periods, 4 x 200m @ 34 -> 30 / 1:30 rest periods, cool-down jog
Th Medium length easy run
F Short to medium length easy run with a few light to medium speed buildups included near the end
Sa RACE
* That's 3 days with full drills and 3 days with reduced drills (including the RACE day) in this 14-day period
So this guy was usually getting 3 days per week which involved drills, but only 3 days in each full 2-week period used the complete routine. That's only about an hour (including recovery time between sets of drills/strides) out of 10-12 hours of workout time per week (including secondary A.M. runs) for this 90-110 mpw runner. The time spent doing actual drills and strides during the warmup routine (not counting recovery between sets) was probably about 30 minutes per week (note there were more strides following some workouts and on some easy days). That's not a big percentage of the overall mileage, yet regular devotion to the drills provides a thorough and spiced-up warmup, fosters better footstrike/stride mechanics, and maintains those mechanics over time even during periods devoted to more endurance running and less race pace or speed (note how slow some of those 400m and 1k reps were in the early season relative to this guy's 5k best).