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» 100-Days to a Marathon

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Day 037 - Track Intervals

15-minute endurance (EN) warm-up run at level 2 intensity (70-75% MHR) followed by a 15-minute interval (IN) run at level 4 intensity (80-90% MHR). Cool down with a 15-minute EN run at level 2 intensity.

TODAY, DO AN INTERVAL (IN) RUN FOR 15 MINUTES AT LEVEL 4 INTENSITY. Warm-up for 15 minutes with easy to moderate paced running. At the track, run a set of 600's (1.5 times around), rest 45 seconds between each 600 by walking easily, repeat for 15 minutes. Cool-down for 15 minutes by jogging or walking.