Is it necessary to walk my dogs if i bike with them in the mornings?

Every morning i take my dogs out for a run so they can get a good exercise, i use a bike and put their leashe on the bike handles and they run beside me. They get a good run because they get tired in the end of the bike ride.
Is it still necessary to take them for a walk or can i replace walking them with bike riding?

they are both over a year old

I think this is great. Bigger breeds may need more exercise. If they have a yard the bike time may be enough. If they dont appear overweight or over anxious during day this should be enough. Once in while you can breck routine and do something else but dogs like routines. Also are they inside all day and need potty time needs to consider. I would also check paws for any sores or cuts you may not be aware they recieved in bikeing. mamatx

pretty much

Dogs need some form of exercise, and biking with them is definitely exercise so I think that's great! As long as they are getting 30 minutes of it, then that should be plenty. It depends on the breed, age and activity level. Some dogs can bike in the morning and have energy later in the day to do another run!

Just make sure you're going at a pace that is comfortable for both of them. And they are both adult dogs, right? Well over 12 months? Preferably over 18 months. Running them (instead of walking) is fine as long as they don't become overheated (especially in warmer weather) and are in good enough physical condition already.