3 Half-Marathon Predictor Workouts

2-Mile Repeats

Used by coach Steven Miller, this predictor workout is custom made for experienced half-marathoners. The easiest place to complete this is on a track in order to keep tabs on pace throughout each interval.
  • Warm up 10 to 15 minutes
  • 3x2 miles at half-marathon pace
  • Take 3 to 4 minutes of rest between each
  • Cool down 10 to 15 minutes

If you're able to hold your desired pace through each two-mile set with that short amount of rest, it should be realistic come race day.

More: 4 Rules for Setting the Right Race Goals

Galloway's 1-Mile Time Trial

Established by famed coach Jeff Galloway, the "Magic Mile" can help you predict pace through a short, intense workout. Since it is a short effort, you can even do several Magic Miles throughout half-marathon preparation to help guide your training paces. It can be completed on a track or a measured path.
  • Warm up 10 to 15 minutes
  • Do four to eight accelerations
  • Run one mile at a difficult pace, working to pace each 400 evenly
  • Cool down 10 to 15 minutes

By taking your mile time and multiplying it by 1.2, you will have a fairly accurate half-marathon prediction.

More: Calculate Your Running Pace

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