Keira is 14 weeks and I wouldn't dream of having her out for that long, I sympathise with the energy thing,,, really I have a broken vase to show for that excess energy but unfotunately as babies they don't know when enoughs enough, I did so much reading, and taken advice from members on here who clearly know what they are talking about, I'm sure I over exercised Keira in the beginning but took the advice on board so cut it back.

I am trying to do training several times a day so she gets mentally tired but I think dealing with the excess energy is part and parcel of having a pup, I'd rather put up with a few months of her 'going a bit nuts' than deal with a lifetime of joint problems.

I know how hard it is when the excercise is limited, I took Keira and Summer to the beach this weekend and after 20 minutes walking we had to set up camp next to the car while all my family and my older dog went off again through the forest.

So in answer to your question imo definatley not a 5K

removed due to misreading

sounds just like my lovely Keira! She is currently lay quietly but when she gets bouncy all hell breaks loose and I love it, Summer does as well mostly now she's got used to the mad bundle of fluff that 'attacks her' , isn't that the whole point in getting a puppy? Yes we do sit stays, find treats etc to tire her out, I will definatley stick by the 5 minute guidelines as I'd rather have her a bit more bouncy at home now than have problems with her joints later

But then why ask if a pup can do 5k if she is planning on carrying the pup most of the time? The distance would be irrelevant then...

i have never restricted my pups exercise over a few decades and strangely none have ever had joint issues, my old boys back end went a couple of years ago but he was 18, maybe i have been lucky.
I agree though 5k at 14 weeks non stop is too much but then again feel the original OP did not mean to walk the pup the entire 5k.

she asked when she would know the dog had had enough in her first post and then she also informed that when she does her normal walk the dog does not walk continually, maybe send her a PM and ask her.

Yep, she did ask when to know if the pup has 'had enough' but she also asks if 5k is too long... that comes across as though she was planning on walking the dog pretty much the whole time. It clear that she doesn't want advice anyway, and will do it her way whatever we say.

Sorry have not read all the replies, but read some which I thought meant to walk 5K with pup, anyway to answer the question Mojo is 8 months and I wouldn't walk her that far, her legs are small enough...she'd come back with no legs at all after that distance

5k for a JRT puppy is way way too much.
Terriers can be prone to hip and knee problems, so thats something to be really mindful about.
1 hour a day exercise is definitely way too much for a 14 week old pup, Up to approx 8 months - 12 months old there isnt a real requirement for specific "exercise" - as in walking or taking out for the purpose of exercising, because of the stress on their forming joints and the amount of activity they do in a day anyway is more than enough.
She might seem hyper - but thats a puppy for you, and JRTs are a bit like that when they are little - they're well known for being a full of beans dog. An hour a day is enough to keep my 18 month old Staffy sleeping the rest of the afternoon lol.

Perhaps you could walk and carry the main bulk and then let her cross the finish line and put her down about 20 minutes before you reach it?

Irrespective of the exercise aspect of this proposal, does anyone think that an event of this size and nature is appropriate for a 14 week old puppy to attend where it is FORCED into being in the middle of a crowd etc?