Running can be a great form of exercise; it can also be frustrating if you’ve hit a plateau or feel like you are not very good at it. The key to enjoying running might not be running longer but running smarter. Variable speed and intensity training techniques, such as intervals, tempo runs, and Fartlek workouts, can help build endurance, increase efficiency, and make your runs more dynamic. Whether you’re training for a 5K or a marathon, these methods can take your stamina to the next level.
Logging miles at the same pace every run might feel comfortable, but it can also hold you back. If your endurance isn’t improving despite consistent effort, it’s time to mix things up. Variable speed and intensity training introduces bursts of speed, recovery jogs, and effort changes that challenge your body to adapt. This approach keeps workouts engaging and helps you improve as a runner wether you are just starting out or training for your next marathon.
Interval Training
Intervals alternate between high-intensity bursts and recovery periods. A simple workout includes running at a challenging pace for 30 seconds, followed by a minute of light jogging, repeated for 20–30 minutes. This method enhances cardiovascular efficiency and conditions your body to sustain faster paces longer.
Fartlek Training
Swedish for “speed play,” Fartlek training adds unstructured bursts of speed to your run. Instead of strict timing, you might sprint to a stop sign, jog to the next tree, then push the pace for a minute. This technique improves endurance while keeping runs fun and unpredictable.
Tempo Runs
Tempo runs are performed at a “comfortably hard” pace—about 80–90% of your max effort. A classic tempo run includes a 10-minute warm-up, 20 minutes at a challenging pace, and a 10-minute cooldown. Training at this intensity helps you sustain faster speeds without fatigue setting in too soon.
Long Runs with Pace Variability
Instead of running at a steady pace, add variations. For example, during a 10-mile run, maintain an easy pace for five miles, pick up speed for two miles, return to an easy pace for two miles, then finish strong. This method improves endurance and race-day readiness.
Building endurance isn’t just about running more—it’s about training smarter. By incorporating variable speed and intensity techniques, you’ll boost stamina, increase efficiency, and break through plateaus. Try adding one of these workouts to your routine and see how your endurance transforms!
Sample Schedule
- Monday: Rest or light recovery jog
- Tuesday: Interval or tempo run
- Wednesday: Easy run or cross-training
- Thursday: Fartlek run
- Friday: Rest or active recovery
- Saturday: Long run with pace variability
- Sunday: Easy run or cross-training
Common Mistakes to Avoid
- Overtraining: Too much intensity leads to burnout or injury. Rest days are crucial.
- Skipping Warm-Ups & Cooldowns: Warming up prevents injury and cooling down aids recovery.
- Neglecting Nutrition & Hydration: Proper fueling sustains energy levels and improves performance.
If you have questions on what will best suit your needs and would like a more individualized training program contact your NIFS fitness center staff!

Staying active and making healthy choices is important, especially as we get older. Strength training and maintaining a healthy body composition can make a big difference in how we move, look, and feel as we age.
Walking is a simple act that can have some impressive health benefits. Most of us walk to get from one place to another but let’s use this daily activity to feel better and take care of ourselves. Walking requires no special equipment or training, making it incredibly accessible to people of all ages and fitness levels. Whether you live in a city or a quiet suburban neighborhood, you can easily incorporate walking into your routine. Tailor your walking workouts to suit your schedule and preferences. Whether it's a brisk walk during your lunch break or a leisurely stroll after dinner, the flexibility and convenience of walking make it a sustainable exercise option for long-term health and fitness. Here are three reasons why walking should be prioritized in your fitness regimen.
A vacation is great to “get away from it all.” It is up to you if that includes your normal exercise routine. Most of the research indicates that one week off from exercising will not take away from the progress you have made. In some instances, a week off can increase your performance by allowing lingering injuries time to heal. More than one week off can lead to declines in cardiovascular and muscular ability. During your vacation take these steps to not lose the progress you have made.
The first thing you want to do before building a workout plan is to start with the end in mind, what is your goal? Are you looking to lose weight, get stronger, increase flexibility, run a 5k? Once you figure out why you want to exercise it becomes easier to plan how frequency, duration, and what exercises you should do.
Many of us suddenly have been thrust into working from home. I am sitting on a folding chair, leaning over my keyboard, looking at my laptop screen that is sitting on a folding table. Needless to say, I am not in an ergonomically sound position. The Mayo Clinic has a great blog about
Tami is a determined woman. She began as a secret exerciser doing her own thing. She is now a bold woman with confidence willing to try everything she can. She actively recruits co-workers to join her for exercise sessions at the onsite corporate fitness center in their workplace and is always game to try new exercises. It has been fantastic to be able to get to know Tami during the past few years.
My exercise routine started out by playing the activity games, step aerobics, yoga, stretching, “running”/jumping in place, etc. for approximately 5 days a week for 45 minutes or more. I also had access to a gym, which after a month or so of the Wii, was my next mode of exercise. I would wake up at 3:50 in the morning in order to make it to the gym, make it back home in time to wake my daughter up for school, and get to work by 7:30 am. It was hard at first, but the weight was starting to really come off and I loved seeing the results and feeling good. By April, I was jogging on the treadmill with a 12 minute mile. Wow! I couldn’t believe I was “running”! At that point I was hooked….I loved running!
Mandy Kisamore was a little reserved when we first met. She is not a jump in the front of the room type of person. She came to a few classes and then became more of a regular. After a while she started to hang around after class and ask questions that began with her and then shifted toward her children, and her family. She has done a lot of work from when she started and it hasn’t stopped with her. Check out her story about how she transformed herself and her family. It has been extremely rewarding to be able to be a part of Mandy’s success.

Sherri Pryor came to me in our corporate fitness center after starting this journey on her own. She was determined to continue to make positive changes in her life. She was definitely apprehensive about talking to me at first. However, she has overcome her own insecurities to become a stronger and more confident version of herself than the woman that first came to me three years ago. There have been goals set, goals achieved, and goals missed, but through it all she has always kept a positive attitude. This attitude has helped her become the best version of herself she can be. Here is her story!
I started this process in early 2012; I was committed more than I had ever been in my life to making changes, exercising more and improving my personal wellness. I was tired of feeling like I had no control over how I felt and looked. There are so many things in life that we truly can’t control. Making time for exercise and doing things to improve your overall health are not on that list. It was hard at first; but it got easier with time.