Mastering Interval & Tempo Workouts to Crush Your Half‑Marathon Goals
I still hear that early-morning bell, the thin metal chime on the park’s footbridge that signals the start of the season’s first fast-paced run. What if I could take those quick bursts of speed and build them into something reliable for my half-marathon?
Story development
After ten minutes, that familiar craving kicked in. I tested a short burst: two minutes of serious effort, then a minute of easy jogging. The shift was striking; my legs found the faster cadence again.
That same week, I ran the pattern again, this time pushing for five minutes at a pace just under race day. I got a concrete sense of what my half-marathon pace should feel like.
The power of intervals and tempo
Why intervals work. Interval training improves VO₂ max and lactate threshold more efficiently than steady-state runs (Basset & Howley, 2000). By alternating high-intensity bursts with recovery, you stress the cardiovascular system while allowing enough rest to maintain quality.
Why tempo runs matter. Tempo (or “threshold”) training targets the point where lactate begins to accumulate faster than it can be cleared. Running at this comfortably hard pace teaches the body to clear lactate more efficiently (Billat, 2001).
Intervals are the spark that lights the engine. Tempo runs are the steady revs that keep the engine humming.
Self-coaching with tech assistance
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Identify your personalised pace zones:
- Easy: 1-1.5 min/km (or 2-2.5 min/mi) slower than race pace.
- Tempo: 5-5.5 min/km (or 8-9 min/mi), roughly your half-marathon goal pace.
- Hard: 4-4.5 min/km (or 6.5-7 min/mi) for interval bursts.
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Design an adaptive weekly plan. If a session feels too hard, shorten the hard intervals or lengthen the recovery.
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Leverage real-time feedback. A glance at your watch confirms you’re staying inside the intended zone.
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Create custom workouts. Mix and match:
- Short-interval set: 5 × 2 min hard, 1 min easy.
- Medium-interval set: 4 × 5 min at just below tempo, 2 min easy.
- Long-interval set: 3 × 15 min at a “hard but sustainable” effort, 5 min easy.
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Engage with the community.
Closing and workout
Try the Progressive Tempo-Interval Session (distances in kilometres):
- Warm-up: 10 min easy jog.
- Main set:
- 5 × 2 min hard (4.5 min/km) with 1 min easy recovery.
- 4 × 5 min at tempo (5 min/km) with 2 min easy recovery.
- 3 × 15 min hard (just under tempo, 5.3 min/km) with 5 min easy recovery.
- Cool-down: 10 min easy jog.
Adjust the hard-effort pace to match your current fitness. The key is effort, not a specific number on the clock.
References
- 3 interval sessions to invigorate your off-season - Canadian Running Magazine (Blog)
- Two long-run workouts you’ve probably never tried - Canadian Running Magazine (Blog)
- Workouts to crush your fall half-marathon goals - Canadian Running Magazine (Blog)
- Four ways to improve your half and marathon time - Canadian Running Magazine (Blog)
- Try this steady tempo workout to smash your upcoming half-marathon - Canadian Running Magazine (Blog)
- This Workout Got Me From 2 hours 47 mins To 1 hour 46 mins For A Half Marathon - YouTube (YouTube Video)
- How Half Marathon Training Can Help You Run Your Fastest Marathon Yet - YouTube (YouTube Video)
- 3 Interval Progressions to Nail Your Sub-1:30 Half Marathon Goal - YouTube (YouTube Video)
Collection - Half-Marathon Kickstart
Easy Run
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- 5min @ 6'30''/km
- 20min @ 6'30''/km
- 5min @ 6'30''/km
The Spark Workout
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- 12min @ 6'15''/km
- 5 lots of:
- 2min @ 4'30''/km
- 1min 30s rest
- 10min @ 6'15''/km
Recovery Run
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- 25min @ 7'00''/km
Weekly Long Run
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- 5min @ 7'30''/km
- 50min @ 6'45''/km
- 5min @ 7'30''/km
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