thank you everyone for your enthusiastic and helpful replies.
It seems that maybe size of dog and leg length is less of an issue than breed and ancestry. That is, if the lab heritage is from working dogs rather than show dogs then the offspring are likely to be better runners.
My understanding has always been that poodles are intelligent athletic dogs with great endurance and labradors are also pretty athletic and have great temperaments so a labradoodle, assuming it has the good bits of both should be a good family dog and a good runner.
Any more suggestions or advice would be very welcome, especially from anyone with experience of running with labradoodles. I shall question the breeders carefully about the parent dogs and find out as much as I can, and shall share all this with my family before we make a decision.
We are a family of 4 with 2 boys aged 8 and 12. I am a 42 yr old lifelong runner of good club standard. We have never owned a dog before but are now looking to get one that will be a good family pet and a good dog for me to run with.
I am after advice regarding breed and size of dog.
We have pretty much decided on breed. We want a male labradoodle. It is more the size that is of concern. The puppies we are looking at are due to be born very soon and both parent dogs are around 23 inches in height so presumably the puppies will grow to a similar height.
Considering I regularly run anywhere in the 4 - 15 mile range at around 5.5 - 6.5 minute miling can I expect a dog of this size and breed to make a good running partner?
I understand the need for the dog to mature and to gain fitness gradually over time. I assure you the dogs health and welfare will be of paramount importance. I am not expecting it to handle this kind of running for a year or two but is it likely to cope with this sort of running as an adult dog or would a bigger dog handle it better?
Any advice, comments or suggestions would be most welcome and gratefully received.