Left alone in a park

This, it's the unfamiliarity that's the issue for me, not the being left alone for 30 mins. If it was a local park/somewhere my dc felt comfortable I wouldn't have a problem.

YABU. I would be fine with this. You said yourself that they could see her from sections of the run. She's wasn't really completely unsupervised for 30 mins.

If she was happy I'd be happy.

After your last update it sounds like your youngest is very left out when it comes to your dh focusing more on your eldest and their running.
Your dh needs to find a joint activity they can all enjoy and go running with your eldest when he’s not ‘in charge’ of them both.
It all sounds rather sad for your youngest

🙄

For me it's about choice the 10 y o had in it.
Was she told to 'wait there' and is unsettled in that environment or does she chill in parks and feel ok?
Also any LD?
Confident for age?

I'm going against everyone I think but I wouldn't do this to mine at 10.
Even busy places have dodgy people (sometimes more likely) I think I'd feel safer if they were left in the car?
Did 10 year old get to do Something she wanted afterwards?

What I can’t understand is why parents are so keen to rush their children to grow up. I personally wouldn’t like to sit in a public garden (because that’s basically what the “park” means) myself for half an hour, surrounded by strangers. For a ten year old girl that must have been frightening and half an hour to a child feels longer than it would to us… the fact there were 2 adults there, why could one not have gone and done something with her to pass the time?
I agree with @FigusCarica, you can’t force a child to grow up to suit your own needs. I’d rather my 10 yo needed me. Thats still young, they still need protecting.

Oh well done @Bbq1 the helicopter parenting cliché hadn't cropped up yet I don't think. in this case the DD was uncomfortable and called her father so it's unlikely the experience will encourage her to be 'independent' quicker. Children become independent when they are ready, not when it's convenient to us.
I'll spell it out for you: 10 year olds are perfectly fine out of our sight, just not in a city park.

Helicopter. parenting at it's finest... Let's not let a 10 year old out of our sight for a few minutes at a time and watch them morph into a 14 year old who can't be even semi independent and still needs parents arranging everything for them and barely able to walk home from school unaccompanied. Shit parenting.

She's not technically alone nor in a deserted park in the dark.

💯

I think not understanding what the issue is is a pretty good indicator of shit parenting.

I think having a child who can't amuse herself for half an hour is a pretty good indicator of shit parenting.

So she waits for them every week, just this time in a different park?

Honestly if she doesn't want to run it that is fine, but I don't see any need for one of them to miss a week just to sit and wait.

Edinburgh - yes
Glasgow - no

Do you have a good relationship with your ex? Is your DD enjoying the time she spends with her dad? Generally, you don't get to dictate how he parents and he doesn't get to tell you what to do when they're with you. A 10 year old should be fine on their own in a play park but if your DD is unhappy then you want her to be able to tell her parents, while you work on increasing her independence.

Exactly. And weirdos are not rare.

I've heard a couple of run briefings where u11s have previously been left unsupervised while parents have run parkrun and it's been flagged up as an incident. The worst one was where a 5yo was left in a play area, ambled out and was found at the weir of a major river 100m away.
A 10yo is very different and is within months of parkrun policy deeming them appropriately safe to run the event by themselves at 11. With the greater marshalling keeping children in sight, children can run junior parkrun themselves from 4, where the reality is that at 5-6, regulars will start breaking away from their parents and running more independently. Parkrun has to draw a line somewhere, and the age groupings are 4-10 and 11-14 so 11 at 5k is practical and also in-line with general social expectations of that age group. 10 is not far off it, and is in the age range where children start being in public solo for short periods.

The biggest issue is her comfort level.
It's a busy park in the morning, with hundreds of people around the area. She's not going to be bundled off into a passing van. There are normally plenty of families around also waiting for parkrunners. It's not the time of day when teenagers are loitering.

The parkrun courses I go to are not ones where I'd leave a 10yo to play while I run although my then 10yo might have more than stretched the definition of "finish sprint" but I think it's more a matter of personal comfort zone than serious well-being concern.

I wouldn’t like it op. We play it safe. Busy places can also create noise and distraction and it only takes one weirdo for this to end very badly.

Agreed. And I agree OP @Dmb563 . 10yr girl old, alone, strange place she’s never been before . WTH, that’s not ok.

As well as the fact is weird that neither of the adults thought they should stay with her.

A group of 20-30 year old colleagues have several times been assaulted and harassed by "youths" as they leave work. Being older or in groups doesn't guarantee safety.

Men in white vans are less likely to grab a girl from a park by sticking their hand over their mouth and dragging them through a busy Park Run to a van. They are more likely to either convince them to come with them willingly (think come and see my puppies) or grab her somewhere more secluded. Like the 12 year old in the woods who could easily be surrounded by "Park Runners" who discreetly herd her off the path and into the woods ...

Normally i would say a child in a park for 30 mins is ok but in this case where it was in an unfamiliar city then that is out of order and dangerous.

You get older and get the confidence to scream at them to fuck off. Or you get old enough that they aren’t bothered with you.

Few ten year olds would have the confidence to scream blue murder at a stranger harassing them, or to ask another stranger for help.

Where is the youngest all the other Saturdays when they run?