Running Intervals for Half Marathon Training

by Teri on January 10, 2012 · 11 comments

After I ran a PR at the Mistletoe Half Marathon last month, I’ve been motivated to actually train and push myself leading up to race day to see if I could get even faster if I ran a half marathon in the spring. I’ve learned from previous half marathons that I am prone to injury if I run every day or even 5 days a week, as many plans recommend. So I typically stick to 3-4 days of running.

My training currently looks like this:

  • Monday:  3 miles, easy pace
  • Wednesday:  4-6 miles, intervals/tempo
  • Saturday:  Long run – I started at 5 miles and have added 1 mile each week (and plan back down to a 3 miler every 3 weeks for extra recovery)

I’m trying to do yoga and weight training on the other days and take 1-2 complete rest days a week. For my mid-week run, I do intervals anywhere from half a mile to a full mile. The intervals are tough, but make the workout go by much faster. When I get tired, I tell myself, “The longer I hold this pace, the sooner I’ll reach the next mile mark and can slow down.” 

Even if you’re not training for a race, there are other reasons to kick up your pace:

  • Speed training strengthens your muscles in different ways than long, slow runs. I swear my hamstrings get stronger  and more defined when I do speed work, even more quickly than when I do traditional hamstring exercises in the weight room.
  • Interval work increases your calorie burn even after you’re done working out. Increased metabolism even when I’m not running? Yes please.
  • Ego boost. Plain and simple. ;)

I’ve been doing most of my interval work on the treadmill because it’s so dark before and after work. Long, slow runs on a treadmill are misery for me, but I actually really like speedwork on the treadmill because it forces me to hold a faster pace. I have to manually change the speed or step off the belt if I want to slow down whereas outside, I often back off the pace without even realizing it.

Training outside is very important when training for a race so I make sure to do my long runs on the pavement. And when I have more daylight hours, I’ll start doing more interval and tempo work outside too so I can train my body to hold the pace without the treadmill’s help.

Here was my interval workout last Wednesday.

Mile 0 – 1:  Warm up, very easy pace

Mile 1 – 2:  7:30 minute/mile

Mile 2 – 3:   recovery pace (9:15 – 9:30 minute mile)

Mile 3 – 4:   7:15 minute/mile

Mile 4 – 4.5:  recovery pace

Mile 4.5 – 5.0:  7:00 minute/mile pace

Mile 5 – 6:  Cool down, very easy pace

This week I’m going to work on doing longer intervals at a slightly slower pace, which is really more of a tempo run than an interval workout. I’m not sure I can hold sub-eight minute miles for more than 1 mile at a time when I don’t have race-day adrenaline, so we’ll see how it goes!

(BTW, yes I do my treadmill runs in my Vibram FiveFingers. I just have to make sure I wear Injiji socks with them or else I get blisters.)

{ 11 comments… read them below or add one }

1 christina January 11, 2012 at 8:54 am

I am training for my first half marathon so this post was helpful! Thank you! :)

Reply

2 Teri January 11, 2012 at 11:46 am

oh good!!! :)

good luck with training!

Reply

3 Amber @ Busy, Bold, Blessed January 11, 2012 at 12:51 pm

I’m training for my first half too! It’s not till May so I have a lot of time to build up my miles, but I’m trying to start super slow because I’m afraid of injuring myself.
Amber @ Busy, Bold, Blessed´s last [type] ..Half Marathon Training: Week 1

Reply

4 Rebekah Arnesen January 11, 2012 at 1:38 pm

i have done 3 half marathons and want to do another one in april. it’s so cold where i live (and i am usually at school until after dark) that i only run on the treadmill. this seems like what you do. do you have any suggestions of how to make a treadmill workout more exciting? especially for long runs? thanks!

Reply

5 Hillary [Nutrition Nut on the Run] January 11, 2012 at 1:56 pm

I love that image – true for me too – and interval training rocks. It WILL make you faster + stronger :)

Reply

6 Courtney January 11, 2012 at 3:17 pm

I NEVER do interval training, but decided to try yours today just to see how I liked it! Slightly modified and a bit shorter…
0-1: 9:45 pace
1-2: 8:00 pace
2-3: 9:15 pace
3-4: 7:30 pace
4-4.5: 9:00 pace
It kicked my butt! Especially the 7:30 mile!! I normally just build up slowly from about a 10 minute pace to a 7:45ish pace at the very end of my run, so busting out “sprints” in the middle was a challenge. But guess what…I liked it! Thanks <3
Courtney´s last [type] ..A Mysterious Visitor…

Reply

7 Teri January 11, 2012 at 9:33 pm

I’m so proud of you!!

Reply

8 Mary @ Bites and Bliss January 11, 2012 at 3:22 pm

Speedwork was the worst part of marathon training. Probably because the only place around here to do it and still stay on the pavement was pretty hilly. For some reason I had it set in my head not to run any of the training runs on treadmill. I wish I had for intervals!
Mary @ Bites and Bliss´s last [type] ..10 minutes = 1 hour of working out!

Reply

9 Alaina January 11, 2012 at 3:51 pm

What perfect timing! I have a half marathon coming up in February and I’m doing Hal Higdon’s intermediate training. The plan has me running 5 days during the week and it does seem like a bit much. I usually scale it down to 4 but always, always make sure to get in some kind of speed and my long runs in. I’m hoping for a big PR for this race!
Alaina´s last [type] ..Half at the Hamptons Training–Week 6 (and a Recipe)

Reply

10 Michelle January 11, 2012 at 6:56 pm

Thanks for this post — I’m just starting to think about training for my first Half this spring, so this is great info for me! I agree about the treadmill being helpful for speedwork – it does the thinking for you so that you can’t just zone out/slow down without realizing it!

Reply

11 Corrie Anne January 12, 2012 at 1:05 am

Hahaha. I feel superior when my treadmill is set faster. That cracked me up. Treadmills rock for speedwork!!! You have no choice but to just do it!
Corrie Anne´s last [type] ..Thai Fried Quinoa & 1-2-1-3-1-4-1-5-1-6-1-7-1-6-1-5-1-4-1-3-1-2-1

Reply

Leave a Comment

CommentLuv badge

Previous post:

Next post: