Your Fastest 5K Starts With a Tailored Approach to Base Training. Run Coaches Share What to Do.

Considering the higher mileage required to train for a marathon, you probably know you need to build a base before you jump into a formal race plan. But when gearing up to run a shorter distance, like a 5K or 10K, you might think you can skip those base miles … and experts say that’s a mistake.“Base training has to happen if you’re running a mile or more,” says Kate Baird, running and metabolic testing coordinator and exercise physiologist at the Hospital for Special Surgery in New York City.Building a base before you tackle any training plan helps launch you closer to your goal and prevents injury or burnout, says Roberto Mandje, New York City-based coach and host of Runner’s World’s How to Master the 5K program.The catch: You shouldn’t base train for a shorter distance like you do for an event like the marathon. Baird and Mandje recommend a base training block that prepares you to handle higher intensity. Translation: You’ll trade a plan full of long miles and easy runs for targeted strength and speed exercises.So if you’re gearing up to run your fastest 5K or you want to jump into a plan to boost your VO2 max in six weeks, stop here first. You’re going to need to ease into that type of higher-intensity training in order to perform your best, and experts share what that build should look like.What Base Training Looks Like for a 10K and ShorterWhen training for any distance of 10K or shorter, you should build up to 10 to 20 miles per week, dedicate time to strength training, and include both plyometrics and dynamic form drills in your schedule, Baird and Mandje agree. This strategy focuses on building the speed and power required for shorter-distance races.The time you spend on base training will vary depending on fitness level. If you’re a more experienced runner (like if you recently ran a half or full marathon), then you already have a solid aerobic foundation. In this case, your base training period might only last about six weeks and focus on introducing heavy strength work, plyometrics, and a few higher-intensity workouts, Baird suggests.On the other hand, if you’re a beginner or you’re returning to running after time away, you may want up to three to six months to give yourself more time to build easy volume, Baird says. You’ll also make a more gradual introduction to intensity through postrun strides, hill sprints, and some speed workouts.Overall, there are a couple of key components in short-distance base training that differ from base training for longer distances. Here’s what you’ll want to include:1. Heavy LiftingFor someone who has experience with half or full marathon training and wants to pivot to a VO2 max plan, for example, the first thing to do is start strength training, specifically with heavy weights, Baird says. That looks like lifting about 70 to 85 percent of your one-rep maximum with lots of compound lifts like back squats and deadlifts, aiming for about three workouts a week.With higher-intensity speed training, your muscles have to stretch and contract to longer ranges of motion. Lifting heavy weights helps you build quality muscle, boost speed and power, and strengthen connective tissue to do just that, Baird says.When people skip heavy lifting, “that’s where people get in trouble with hamstring strains, tears, and pulled muscles,” says Baird. You have to remember you’re not training like a long-distance runner, you’re almost training like a sprinter.It’s also helpful to include single-leg moves like Bulgarian split squats and single-leg Romanian deadlifts, too, Mandje adds, to further mimic run form.“Anything where you’re getting the hips, knees, and the ankles to work together is a great choice for an exercise,” Baird adds.YOUR GUIDE TO HEAVY LIFTING2. Drills, Drills, DrillsForm drills don’t just help your body warm up before a workout to avoid pulling a muscle; they also train those muscles to build more explosive strength. This helps your body get off the ground quicker so you can run faster with less effort.“People who want to run faster don’t underestimate the value of drills,” Baird says. “They can help to prepare your body for those quick rebounds and help you get ready to run fast.”Baird recommends regularly doing form drills before your runs, focusing on A-skips, B-skips, C-skips, and high knees. These drills help you tap into the quicker motions you need to run faster, lessen ground contact time, and practice more efficient leg turnover. “You need more range of motion and you need to practice it. That’s what drills literally do,” Baird adds.TRY THESE FORM DRILLS3. PlyometricsA regular plyometrics routine is another crucial component to your base training, Baird says. With plyometrics, you train your mind and your muscles to handle quicker, larger ranges of motion that high-intensity workouts demand. “Is your body ready for those larger ranges of motion and are the muscles ready to rapidly contract and relax?” Baird asks. Ideally, after adding plyometrics to your base training block, the answer to that is “yes.”Baird specifically likes to start her athletes off with split squat jumps, single- and double-leg pogo hops, and high knees both static and moving forward or sideways. Include these a few times a week before or after runs to get more accustomed to getting off the ground quickly.4. Swap Mileage for IntensityYour volume and speed workouts will look different, depending on experience level, but generally, you’ll want to build up to running 10 to 20 miles per week. This volume conditions your muscles to withstand the demands of short-distance running, handle more intense workouts, and leads swiftly into many short-distance training plans, Baird explains.“Easy runs done at an easy effort are going to help you get stronger, fortify your ligaments, your muscles, your joints, and get you used to being on your feet, and increase your aerobic capacity as well,” says Mandje, which will help carry you into the more specialized training for your chosen event.With low mileage on the schedule, you want to focus on speedwork, but ease into it before tackling the workouts on your race training plan. To create a gradual transition during base training, you can first opt for five to six postrun strides or short hill workouts two to three times a week. These efforts shouldn’t follow a prescribed pace, but instead, you gradually accelerate close to your top-end speed, Mandje suggests.You can also choose a workout or two from the first few weeks of your plan—whether that’s a 5K build, VO2 max plan, or some other shorter distance—and cut down the effort level a bit, Baird suggests.For example, if you’re building up to start a six-week VO2 max plan, Baird says you can practice the first interval session, but instead of aiming for an RPE of 9 out of 10, shoot for a 7 or 8. This helps you safely build intensity without putting too much shock to your system at once and risking injury, she says.Signs Your Short Distance Base Training Was a Success“What I want to see is runners’ growth in confidence, and that confidence is going to come from their training,” Mandje says. As you enter into your short-distance training block, you want to look back on the base building weeks and feel happy, healthy, and capable of handling speed and intensity. “Then the runner is super invested in themselves and their progress,” he adds.One thing to note is there’s a difference between speed training and speed endurance training. Speed endurance focuses more on staying fast for longer distances. Speed training for shorter distances, however, includes higher-intensity work and you should understand that’s a requirement of your chosen race training block, Mandje explains.It’s a good idea to keep track of your progress with time trials throughout the beginning, middle, and end of your race training, Baird says. This way, you can see what times you’re capable of handling, but you might also notice that your overall training paces might get a bit faster without your body needing to work as hard. “That’s why repeated doses of training works; every time you do it, your body figures out what it needs to adjust to do that better [next time],” Baird says.The bottom line: As you prepare to tackle a block of speed training or run your fastest 5K, take some extra time to build a quality base and don’t replicate what you might do to base train for a marathon. Switching things up can get you to your goal PR, and launch you into a whole new level of fitness.Kristine Kearns, a writer and avid runner, joined Runner’s World and Bicycling in July 2024. She previously coached high school girls cross country and currently competes in seasonal races, with more than six years of distance training and an affinity for weightlifting. You can find her wearing purple, baking cupcakes, and visiting her local farmers market.