Final 4 Weeks of TC 10 Mile Training
>> Wednesday, September 30, 2026
Earlier this month, I posted about my first 5 weeks of TC 10 Mile training as I was looking at Coach Jen's old workouts from 2010. I compared this year's workouts to 2010 and 2024 to see where I was at comparatively. (Coach got me to run a 59:05 in 2010, and then I re-used her workouts 2 years ago and SHOCKED myself with a a 59:23 finish in 2024: the only 2 times I've been under 1:01:20.)
I also shared in my last post about how I had 7 hard runs IN A ROW to alter the training plan as I had 4 weeks between a triathlon and the TC 10 Mile in both 2010 and 2024, but I only had 3 weeks this year after the Square Lake Sprint Triathlon and the upcoming TC 10 Mile.
I entered this loose training plan about 2 months ago just using it to not embarrass myself at the race - I had minor injuries in January and April which took big bites out of my speed, so I had ZERO thoughts of trying to post any fast fast times at the TC 10 Mile. I just wanted to build back some speed. But then as I posted about my first 5 weeks of TC 10 Mile training, I saw that I was turning in some decent workouts here-and-there (between some others that were duds), so I started to get a little hopeful. I kept the training up, and here's what the majority of September looked like (after ending August with 2 slow runs).
I'm comparing times from 3 years. So RED TEXT means I was slowest of all 3 years, ORANGE TEXT means it was the middle time of the 3 years, and GREEN TEXT means it was my fastest time of the 3 years of doing these "Coach Jen" workouts for the TC 10 Mile:
Here's a quick look back at those workouts:
The 2x2 mile intervals in the first week (Sept 4th) weren't the best. I do that workout a lot (one of the more common "Coach Jen" workouts from 2010 that I still do), and I did them the month before in 11:32.9 and 11:29.4 as one of my better splits ever. This time, I did them in 11:35 and 11:37. It wasn't good that I slowed down from the 1st to the 2nd. (I went out HOT to start the first one, and I paid for that in the rest of the workout.) But it was still a little better than my times from 2010 (11:48 and 11:34), and just a few seconds worse that my times from 2024 (11:42 and 11:27). So I was within the range of "decentness."
Week 2 started with a bang (Sept 7th) as I posted a fast "shorter" long run being I was going to race later that week. And then I posted a fast 5K run split at the Square Lake Sprint Triathlon that weekend - I tried to use that as a tempo run. Of the 5 years of doing that race, I only ran faster once (2 years ago before my sub-60 TC 10 Mile) with a 18:02. I ran an 18:07 this year, that 18:02 2 years ago, 18:08 3 years ago, and then around 19:00 both 4 and 5 years ago.
Week 3 was a bit of a recovery week, but I also wanted to push it as much as I could. I posted about that week a few weeks ago, and the Wednesday (Sept 16th) fartlek workout was in the middle of my distances that I'd covered for that workout the past few times. I felt OK with that. And the intervals on the track (Sept 18th) were my FASTEST VERSION OF THAT WORKOUT EVER! I had a beautiful descend in that workout with 1600 splits of 5:36, 5:30, 5:24, and 5:19!
Then came the week of "can I survive this?!? Can I keep doing hard workouts with NO easy run after the triathlon?!?" I posted about that in last post.
That final week started (Sept 21st) with a repeat of my most failed long run workout from the very end of August: a long run with 5 hard miles in the middle. Not descending, not speeding up... just 5 HARD miles in the middle. I didn't know if it was a good idea to try to re-do a workout that went poorly for the mental boost, or a bad idea because I wouldn't get as much out of it physically if I wasn't able to run as fast. Back in August, those middle 5 miles were 30:30 (with no mile split dropping below 6:00). But this time I hit it in 30:01 with 6 half-mile splits that were sub-3:00 and 2 mile splits that were sub-6:00. I was 1 second faster than in 2024, but 35 seconds slower than when I did it in 2010. (And 29 seconds faster than when I did it last month.)
Wednesday (Sept 23rd) was the biggest question mark - not because of my splits, but because of the thoughts of if I should even run a hard run that day! Wednesdays are usually always easy days for me, and this would be my 5th hard run straight if I went through with it! But I cranked out 6 miles with the middle 3 at tempo pace in 17:34 (descending with mile splits of 5:58, 5:52, and 5:43). That was 0:16 faster than in 2024, and just 0:02 slower than my best in 2010! NICE!
Friday (Sept 25th) was a normal speed day, and this was a similar fartlek workout like I've done 2 times already in this training session - it was identical to the one from the week before, only on paved trails (for speed) this time instead of on grass (to save my legs) like it was last week. Over the same amount of time, I traveled 0.04 miles farther this time than I did in 2024, and a LOT farther than in 2010 (when I didn't have a Garmin and can't give an exact number). I was riding high and getting ready to wrap up these hard 2 weeks with my best run ever...
... but then I had a crappy one on Sunday.
I did my final long run on Sunday (Sept 27th) mainly to have an extra day to rest this week before the race this weekend. I started and my legs felt heavy, even though I've only been biking easy and short... it was just all of these hard runs catching up with me. This workout was a sneakily brutal one: 6x 3:00 hard / 3:00 moderate. It doesn't look hard on paper, but it's the fact that there are no real "rests" that get ya. It's hard, then MODERATE. Not easy. To compare, here's the HR chart for a workout 6 weeks ago that was 8x 3:00 hard / 3:00 EASY, and you can see how my heart rate drops down well below my average during the "easy" parts:
Dropping well below the average line of 155 bpm.
Always staying well above the average line of 161 bpm.
Finally, these last 3 images probably fit better in my last post about two hard weeks of training, but here they are instead. Here you can see my "intensity minutes" peak last week after 2 smaller weeks:
Biggest week since May.
V02 Max on the way up since a low of 60 in mid-August.
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