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The Sub 3:15 Marathon Thread

2 lurkers | 334 watchers
RFJ
Nov 2020
7:55pm, 1 Nov 2020
4,423 posts
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RFJ
Evening all, first of all thanks for those who have supported me and nominated me for MOTM, cannot believe how many nominations I got, thanks to you guys, thanks :-)... just down to the voting now... :-)

Life goes on, got a walking 5k pb yesterday with 47:56 with the poles... then forgot my poles when I went to Sainsbury's and had a big fall... DOH, and today was a rest day as got some more ink work so had 3.5 hours on my back... (in my days could have run a marathon faster.... LOL The exercise bike is going well and will soon be building the miles...

Take care
Nov 2020
9:24am, 2 Nov 2020
16,784 posts
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Chrisull
larks - but yes it's like I'm permanently running on a track.

RFJ - Good luck with everything and also for MOTM!
Nov 2020
10:27am, 2 Nov 2020
5,637 posts
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Huntsman
Been nursing a bad hip and lower back for a couple of years. Thought sod it I’ll just run.
Nov 2020
11:10am, 2 Nov 2020
12,478 posts
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larkim
Aha I see what you mean Chris. I'd take +/-0.02m generally as an expected margin of error for GPS measurement in any event, whether that's track or road, but would also expect it to generally even out so that the more miles are covered in a rib the overall error doesn't get much worse.

As I've previously posted, for reps and intervals I use fixed points on a road loop that I keep consistent every time I do the specific distance (e.g one lap plus lamppost #3 after the junction = 600m, etc) so even if they measure long or short on the watch the times are consistent.
SPR
Nov 2020
11:19am, 2 Nov 2020
32,143 posts
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SPR
My two 3000m races this year were ended up as 1.93 and 1.90. 1500s were 0.94 and 0.95 x 2. Have seen as long as 0.98 for 1500 in previous years. My 5000 PB in 2019 measured 3.24.

Track mode measured my last 1500m race as 1498m
Nov 2020
11:57am, 2 Nov 2020
16,788 posts
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Chrisull
larks - yeah I'd expect it to be a little wrong, but I've yet to run a race with the watch that measures as full distance. 26 mile marathons (so it suggests that it improves after a bit), 6.1 10ks and so on. Drives me mad.
Nov 2020
1:38pm, 2 Nov 2020
12,482 posts
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larkim
As it happens, for the first time more or less ever I've got a training session on a 400m track tonight. Will be interesting to report back on accuracy! I think the session is 4x400m, 1x1000m, 4x400m (don't ask me me why, it's just what the club are doing).

It's odd how some watches have short / long characteristics. I know from my early days just using a phone, miles have got "longer" for me - i.e. from front door to tree A used to be 1m, now I've got to go another 20-30m further before the watch consistently buzzes for the 1m lap, and with my last watch it was about 10-15m further.

Settling into my running every day nicely - for now the motivation remains to keep me at it, and even on the 2m runs which i try to do on the same route to the same effort level I'm already seeing stats which demonstrate improvement (e.g. first effort of this "streak" was 7m38 pace at 147bpm, this Saturday was 7m12 pace at 141bpm) Still some way off where I was on the day before lockdown when I ran 7m19 pace at 134bpm, but the trend is nice to see.
Nov 2020
2:24pm, 2 Nov 2020
52 posts
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riggys99
Just catching up
I have to agree MB that week looks a bit hard especially the sat/Sunday combo but with the recovery runs done at a proper recovery pace could be doable. Sometimes work/life means we have to do things that aren’t perfect when it comes to running.
Hope the back etc holds up Huntsman
Nov 2020
2:31pm, 2 Nov 2020
53 posts
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riggys99
I have been playing with how my runs are spread throughout the week. I am lucky in some ways as my job as an agency nurse on nights means I can arrange work to suite me/family

My plan for now is work mon/tue/thu/sat nights with my running as follows
Mon - effort type session with total miles around 10 typically a LT type run
Tues - rest day between nights

Wed - recovery run
Thu - effort session typically intervals
Fri - recovery run
Sat - long run 14-20+ miles depending on where I am in plan. The shorter long runs will have surges or faster finishers etc to mix things up a bit

Sun - recovery run
Nov 2020
2:54pm, 2 Nov 2020
16,791 posts
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Chrisull
I know exactly why the watch is measuring short, it samples too irregularly and cuts corners. And the maximum setting is 1 second, which is not good enough. It also gets funny in trees and doesn't lose the signal but does too much smoothing.

About This Thread

Maintained by Windsor Wool
For those who want to go sub 3.15 in a marathon and/or those that have already done it and want to give advice. Share your journey or help someone else's here.

2025 targets:
Charles - Ghent - 30 Mar
Mark J - Christchurch NZ - 13 Apr
riggys - Tissington - 27 Apr

2024 achievers:
Akie: 3:15 @ Rotterdam
allmatthew: 3:09 @ Manchester
Bowman: 3:01 @ Boras
Mark J: 3:12 @ Christchurch NZ
PJH92: 3:13 @ London
  • Show full description...

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