Is there a benefit to the 4-hour marathoner from doing two-a-day workouts? Yes! Perhaps the main benefit is logistical. For those of us who are not professional runners, fitting in a long run can be difficult when it has to be balanced against work and family obligations. This is especially true for all of us who need more time to complete our 18-mile run than Meb does. Many of us find it easier to squeeze in two shorter workouts in the same day. Also, a split workout provides the same endurance benefit as one long workout. This is because your body cannot replenish its glycogen stores during the short break between runs, so it has to rely just as much on burning fat for the second run as it would have done in one long run. In other words, you’d be teaching your body to rely on burning fat for fuel – a main goal of the long run – just as effectively on a split-run program as on a single run schedule. (A single long run does give other benefits, however, such as more closely simulating your race, which would leave you even more prepared). Another benefit is that quite often we can run each of the two segments of a two-a-day program faster than we would be able to run one long segment, giving us the benefit of that extra tempo work. For example, you might be used to running your 14-miler at a 9:30 pace, but feel comfortable running an 8- and a 6-miler at an 8:45 or 9 minute per mile pace. The faster tempo of your split workout will help improve your race-day speed.

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About horowitzrun

Jeff is a certified running, cycling, and triathlon coach, and is the author of "My First 100 Marathons" (Skyhorse Press 2008) and "Smart Marathon Training" (Velo Press 2011). An obviously addicted runner, Jeff has run at least one marathon in every state and on 6 continents, including marathons in South Africa, China, Bangkok, and Antarctica. Jeff is available for group, one-on-one, and virtual coaching. Options include: 1. Basic Training Plan. This includes a customized training schedule geared towards a goal race, with a detailed running schedule that would include all distances and target times for each workout, including speedwork, tempo, and endurance sessions. 2. Complete Fitness and Race Plan. This includes the plan listed above, plus the non-running workouts and drills that runners need for better overall fitness and performance. You would get strength & core workouts, as well as run-specific training drills and stretches. 3. Virtual Coaching. This includes all of the above, implemented on a week-by-week basis. We review each week's progress at week's end so that adjustments can be made. The program is tailored to suit you right up to race day. It involves more contact, on a weekly or even daily basis. 4. Full Coaching for athletes in the Washington DC area. All of the above, plus a weekly workout together including speedwork, drills, and strength training. 5. Individual track sessions. One-on-one track-based workouts. Contact Jeff for pricing.
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