Bro, I think it is most definetly possible. I shaved off 4 minutes from my 5k pr in about 2 and a half months. I went from 21:30 to 17:35. The trick? Go as hard as you can. Put in high mileage weeks but make them quality miles. I only put in about 35 miles a week but it was all split between tempos, segments, intervals, and fartleks. 19 minute 5k pace chart. If you want to run a sub-19 minute 5km time then you’ll want to get your 5k pace at 6:07 minutes per mile or 3:48 minutes per kilometer to come in at just under your desired time. Scroll down for the splits for each km to know exactly what times you need to be hitting on each of those markers. If you spend time and energy you can maybe do it. Honestly, sub-15 minute 5ks are no easy feat. Only a hand full of highschoolers run that fast and although sub 15 runners are far more common in I went from a 25 minute 5K to a 21 minute 5K in about six months a couple years ago just from marathon training. I had a goal of sub 20 but never really focused on it and didn't get there. Then last year I think I was capable of running a sub 20 5K during half marathon training (ran a 21 minute 5K tempo run the day after a brutal 15 miler) but Don't be afraid to take a day off to cycle or rest, or you will probably get injured. If you're doing 5k in 21 mins as a workout, this is a little over 4 mins/km, so try doing 5 or 6 mins/km for your runs on average. Start out at a laughably slow pace on each run and increase the speed a little bit towards the end. *I* (47M, I run for fun, stress relief and health) run 70 miles per week and 35 minutes for 5k is a good day for me, it means I am doing better than 12 minutes per mile. My best 5K was 28 or so and it didn't kill me, it was kinda fun. The good news is that if you can do this, you can get better at it. But 35 minutes isn't horrible, it's just a Be sure to adhere to rest days for the best results. And, to avoid injury, warm up by walking or jogging slowly for about five minutes before hitting your training pace. If any muscles feel tight after warming up, spending a few minutes stretching. Most importantly, don’t neglect to stretch after your runs to maintain your flexibility. 11 min/mile – 34:11. 12 min/mile – 37:17. For reference here, if you run 5 or 6 min/mile 5k, you’re a really, really fast runner! 7-8 min/mile puts you in the fast category. 9-10 min/mile is average for most runners. And the 11-12 min/mile are typically new runners. For beginners, none of these times are bad! .

is a 21 minute 5k good