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Fwiw (related to above) your HR graph starts quite low and climbs slow in the first mile, so you defo should try go out a bit harder IMO and see what happens.
This wasn't for lack of trying, there was a huge turnout today! Preach away though, I'm still noob so happy to take advice. I think you've told me that before too...
Start position was also dictated a bit by meeting a friend who I've not seen in months and not wanting to immediately bugger off up the crowd.
Let's see what next week brings in any case. Thanks again.
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It's most likely effect of being stuck in the crowd, spot the hr dips where I'm guessing you've got stuck, starting forwards will fix alot of that. Harder would only be a couple bpm more from the start. Again fwiw I have a similar max hr at finish (appx 195 to your 197) and aim to hold about 175 bpm for the first couple of km in a 5k then maintain that pace as the hr rises with fatigue then empty the tank in last km.
The real experts may offer a different view here!
I'd actually written that advice in my post earlier (based on your Strava pic of the start crowd) but thought it a bit 'preachy' so deleted it!
Defo worth moving up at start, you'll get dragged along a bit by the faster crowd. You may find too much at first and you blow up but that's part of learning to run on the limit.
Fwiw (related to above) your HR graph starts quite low and climbs slow in the first mile, so you defo should try go out a bit harder IMO and see what happens.
Maybe see if there's a 20min pacer you can tag onto?