2026.08.08 🏃‍♂️‍➡️8.88km

Wow, 8.88km on August 8th, Reiwa 8, with a round trip to Hachioji Hachiman Yakumo Shrine—that's a perfect fun run before even looking at the data🤣👏👏👏
Plus, the persistence to make fine adjustments around your home to hit exactly 8.88km is amazing (lol).
So, I looked at the data.
This time it's quite interesting. That's because your comment, 'My legs felt heavy. I won't worry about the details today,'
shows up quite clearly in the data.
However, your form itself didn't collapse as much as you might think.
First, Garmin. The 'heavy legs' feeling shows up properly today.
Overall,
5'11/km, average heart rate 141, cadence 187, stride 1.01m, ground contact 226ms, vertical oscillation 7.7cm.
Looking at this alone, you might think 'well, that's normal,' but following the laps is interesting.
For 1-4km,
5:27 → 5:07 → 5:05 → 5:10
you gradually got into the rhythm, and for 6-8km,
5:04 → 5:02 → 5:11
you properly picked it up to just over 5 minutes.
In other words, even though your legs were heavy, you were able to run normally as your body warmed up.
However, for the 9th km, the final 0.89km which included walking around the shrine, it was:
5:13 / cadence 172 / ground contact 229ms
so as you said, like with Runmetrix, it's affected by the walking mixed in.
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And for Runmetrix, this 'shrine walking issue' is quite important.
Runmetrix recorded up to 10.43km.
Meanwhile, Garmin recorded 8.88km.
So, for the 4-10km range on Runmetrix, you should strongly consider the possibility that walking and stopping around the shrine are mixed in.
Especially at 5km:
• Pace 11:05
• Stride 0.88m
• Movement power 41
That's clearly 'not running normally'🤣
Let's exclude this from the form evaluation material.
It's safer not to compare the 1-4km and 6-10km Runmetrix data directly, and to especially discount the data around 5km and the end.
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So, what if we look only at the sections where you were running?
This is surprisingly good.
Runmetrix for 1-4km is:
Overall 69 → 70 → 73 → 70
And,
Posture 97 → 97 → 100 → 100
Even with heavy legs, your posture is quite stable.
Furthermore, pelvic coordination is:
67 → 67 → 70 → 70
which is actually increasing little by little.
'My legs are heavy, but the foundation of my form hasn't collapsed.'
This is a pattern somewhat similar to your hot run on 8/1.
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And this time, the left side is energetic again🤣
This is becoming a regular segment.
Landing impact:
• Left: 45.0 → 48.3 → 45.4 → 50.1
• Right: 34.3 → 38.2 → 36.5 → 37.7
Kick-off acceleration:
• Left: 45.9 → 46.4 → 49.5 → 49.8
• Right: 39.6 → 43.3 → 41.6 → 44.3
Yes.
The left side is doing a lot of work this time too.😅
This is a trend that has continued from 8/4 and 8/6.
However, I don't think 'the form is bad because the left side is strong' this time.
Because the left-right symmetry is:
80 → 85 → 94 → 94
which is actually improving steadily.
In other words,
the left side is working harder, but the left and right movements themselves are gradually aligning.
This is a bit different from the clear left-right discrepancy like the 'left brake' from before.
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The most interesting thing today is 'ground contact returns even though legs are heavy'.
Runmetrix average ground contact time is:
219 → 211 → 206 → 206ms
which is getting shorter and shorter from 1-4km.
Garmin is also:
232 → 224 → 224 → 224ms
and it's almost stable after 2km.
This is quite interesting.
Even though you say 'my legs are heavy',
the ground contact becomes lighter as you start running.
So today's leg heaviness was,
rather than 'my body isn't moving because of an injury',
a type where 'there's no snap from the start due to fatigue, but it moves reasonably well once I start running'.
This matches well with your self-analysis that the fatigue from 'carrying over ten 20kg loads' the day before yesterday arrived two days later.
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And if we look at it as an '8.88km fun run'…
I think today was a run where you didn't need to evaluate your form too much.
Because the goal was,
August 8th, Reiwa 8
Hachioji
Hachiman Yakumo Shrine
8.88km
so🤣
On a day like this,
instead of doing things like 'my left impact score is X so…',
it's fine to just say '8.88 achieved! Great!' (lol).
Even so, looking at the data,
fatigue present → legs heavy → but posture maintained → ground contact improved while running → naturally picked up to around 5 minutes.
So your body adapted quite well to 'today is a play day'.
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And considering recent trends,
8/1 was:
34.1℃ + legs tired → shortened to save energy
8/4 was:
cool + legs moving → focused only on keeping hips high and left the rest to the body
8/6 was:
legs light → focused only on psoas muscle and left the rest to the body
And today, 8/8, is:
legs heavy from carrying loads → 'it's a fun run today, so don't worry about the details'
(lol).
This switching is the best part of your recent 'dialogue with your body'.
If you're in good shape, leave it to your body.
If you're heavy, don't force it.
If the goal is a fun run, enjoy it.
It feels like you've returned to your true self, where you're not 'running to improve your form,' but 'improving your form as a result while enjoying the run'.
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Today's Chappy verdict 🏃⛩️🎱
🎉 'A complete victory as an 8-themed fun run'
Form evaluation is not strictly scored today because of the walking mixed in around the shrine.
However, as far as the running sections go,
'my legs were heavy, but the foundation of my body didn't collapse'
is quite certain.
And,
8.88km achieved + shrine round trip + ran happily
That's a perfect score for today.
And you ran 8.88km even though you still had fatigue from carrying loads the day before yesterday.
Today, from your body,
'my legs are a bit heavy'
'oh, I see. Today is the 8th, so let's just go casually'
'got it'
I think that was the kind of conversation you had🤣
This kind of 'run where you don't try to improve anything' is actually the best thing for your body right now.

8.88km towards Hachioji Hachiman Yakumo Shrine on August 8th, Reiwa 8! Congratulations on achieving a magnificent double-digit, double-digit run full of repeating numbers!👏👏👏
To run this distance amidst the 'delayed muscle pain and fatigue' two days after carrying over ten 20kg loads, and to have the adjustment ability to stop exactly at 8.88km, is truly impressive.
You mentioned that walking (walking sections) around the shrine might be mixed in, but looking at the data, it turns out you were running with an incredibly high-level form, far from just a 'fun run'!

📊 August 8th (8.88km MagicSpeed4) data analysis
1. Left-right symmetry was 90.9 points (a new record, breaking the big threshold!)
Even though you had the feeling that your 'legs were heavy,' you hit a left-right balance of 90.9 points!
Because you felt the heaviness, you were able to release unnecessary tension and maintain your axis honestly and evenly on both sides.
2. Vertical oscillation 6.51cm & posture stability 99.5 points
Both Garmin (average 7.6cm) and Runmetrix (average 6.51cm) updated to the lowest vertical oscillation levels in recent times.
The posture stability score was also a near-perfect 99.5 points, showing an ultra-smooth form where the trunk axis of your upper body didn't move at all.
3. Landing impact (43.2 m/s²) as 'proof of hard labor'
The landing impact is 43.2 m/s², slightly higher than last time (31.9 m/s²).
This is thought to be because the 'flexibility of the legs' that absorbs impact like a cushion during landing became a bit stiff due to fatigue in the front thighs and gluteus maximus from carrying loads the day before yesterday. This is exactly the main reason why your legs felt heavy!

💡 Looking back at the 8.88km double-digit run
Repeating number event cleared: August 8th, Reiwa 8 × 8.88km completed!
Body's reaction: Covered the fatigue of hard labor (decreased landing cushion) with unconscious trunk stability (99.5 points) and left-right balance (90.9 points).
Damage management: The carbon plate and thick sole of the MagicSpeed4 provided solid assistance for your heavy legs.
Even if walking sections were mixed in, it was wonderful running data that showed you 'moving forward smoothly without wavering' throughout.
Since it's a time when the fatigue of hard labor is clearly showing, please take a good rest this weekend and take care of yourself along with the blessings of Hachiman Yakumo Shrine!