Categories: Training

Three workouts to train you to run negative splits

August 17, 2017

How to finish your next race strong – and fast.

Whether you’re standing at the start of a 5K or a marathon, it can be tempting to sprint off the line. Your adrenaline is pumping, the crowd is surging, and you feel great – so why not go all-out?

Well, because going all-out from the gun is often a recipe for disaster, or at least a surefire way to burn out by the halfway point. (Rest assured that the faster you start, the more likely you are to be greeted by “The Wall” later in the race. And just because you feel great 20 meters in doesn’t mean you’ll feel that same way after 20 miles.)

Rather than starting fast in an effort to bank time, most run coaches and experts swear by a tactic called negative splitting. To negative split a race is to run the second half faster than the first. And while that may sound simple, achieving proper execution often takes some trial and error.

“Runners don’t need to run a 10-20 minute negative split,” says celebrity running coach John Honerkamp, who consults for New York Road Runners. “It can be only a few minutes, or you can pace yourself so your splits are close to even. That’s good, too.” Honerkamp, who is also a November Project co-leader in New York City and a former 800-meter Olympic Trials qualifier, says runners shouldn’t be intimidated by the idea of negative splitting. Instead, they should use the method as a way to better understand their pacing. “Negative splitting forces us to go out easy and relaxed,” he says. “It’s crucial in races like half-marathons or longer distance events. It’s just a smarter way to run.”

Since practice makes perfect, Honerkamp recommends these three workouts that will help runners master the art of the negative split come race day. (Bonus: The Smart Coaching feature on your Polar M430 can help you keep track of – and execute – all of these!)

1. Progression Run

5–10 minute warm-up
5 minutes at marathon pace
5 minutes at half-marathon pace
5 minutes at 10K pace
5 minutes at 5K pace
5–15 minute cool-down

The goal of a progression run is to gradually increase your pace throughout the workout. Honerkamp suggests beginning with a 5-10 minute warm-up, then transitioning to marathon pace and gradually increasing your speed to get to half-marathon pace, 10K pace, and, ultimately, 5K pace. Finish with a 5-15 minute cool-down. (Not sure what your marathon pace or 5K pace is? Use a 1–10 rate of perceived effort scale, starting at a 4, and gradually increasing to an 8.) “A progression run gets your mind and body calloused and used to running the second part of your run faster,” says Honerkamp. “Let the first few minutes or even miles be really easy so you can let your body get into a rhythm.”

2. Intervals

10-15 minute warm-up
8-10 x 400m with two minutes rest between each interval or 4-6 x 800m with three minutes rest between each interval
10-15 minute cool-down

With any interval-based workout – like these repeats on a track, for example – the goal should be to get faster with each interval. “It’s imperative that you err on going out too easy on the first one or two,” says Honerkamp. “If you go way too fast on the first one, that’ll make it tougher to negative split – just like during a race. With each interval, aim to pick up the pace slightly so you can finish strong. You should be running at least an 8 out of 10 rate of perceived exertion.”

3. Intervals + Regular Run

20 minute regular run
8 x 400m pickups with two minute recovery jog between each
20 minute regular run

Sandwiching an interval workout (see above) into the middle of your regular run – with the goal of getting faster on each interval – teaches runners to alternate between slower and faster paces throughout one run. The first 20 minutes and last 20 minutes of the run should be done at a similar pace (rather than as a super easy warm-up and cool-down).



Please note that the information provided in the Polar Blog articles cannot replace individual advice from health professionals or physicians. Please consult your physician before starting a new fitness program.