I used one of these for years on bridleways and forest tracks with my Springer Spaniel. It is brilliant but I would say it should always be used with a harness, not a collar; you should be aware of setting a sensible speed for your dog (i.e. his normal "loping" stride) and make sure you stop for water and toileting; it is not safe to use where there is traffic.

I have a huge bull mastiff he loves it took him a few goes to get used to the bike I got him a harness to attach him he now goes everywhere with me
I would highly recommend this to anyone

I have a small patterdale terrier whom no matter how much you walk her is never satisfied! This bike attachment is fantastic, it allows us to run her without the worry of her going under the wheels. We did have to change the lead attachment as the one supplied did not reach far enough. If you're looking for a way to have fun with your dog whilst exercising them fully then this is the product for you.

This is a great idea and to a degree it works. I have a new hybrid cycle and attached the unit as directed and in the instructions it warns it may be in the way of your feet. Well it does get in the way so you have to cycle using your arch and not the ball of your foot.This is a very poor design and could so easily be sorted by the manufacturer. I only have size 9 shoes so not really large. The lead is adequate but could do with being slightly longer.

We have 2 dogs, a German Shorthaired pointer and a Beagle. I took the dogs out 1 at a time initially and they learnt what to do extremely quickly so I ventured out with both of them. I was trundling along happily but became worried when I saw a pigeon asleep in the middle of the road, my GSP likes to point and stalk birds, I thought this was going to end in an ugly mess. Otto, true to form, leapt up after the bird and the spring just pulled him back in with barely a wobble! I can cycle at a steady pace on the road and they run on the pavement, it works a treat and am more than pleased with the purchase.