How do I send map directions to my iPhone?

Sign out of iCloud on the Mac and then sign back in.

Do they all use the same apple ID?

yes

I have a similar problem but Maps will allow me to send to my iPad but not my iPhone. Both are using the same iCloud address.

Any ideas?

I had the same issue. I had updated to IOS 7.03 on my iPhone and upgraded to Mavericks just a few hours ago.

1. You do not need 7.03 (After completing #2 below I can see all my IOS devices)

2. My issue was solved by logging out of iCloud completely on my Mac then logging back in. I had to go through several prompts about contacts, photos, etc. but didn't lose any content.

I read that on a previous discussion and tried the same thing. Unfortunately it didn't change anything.

I am current;y updating to 7.03 just in case and will try it again.

I had a similar problem. All I had to do was log in and out of iCloud on my mac. I didn't need to update my phone to 7.0.3.

Still doesn't work for me. My iPad doesn't show up.

I signed out of iCloud on my Mac and then signed in again and it worked perfectly. Maps now detect my iPhone and my iPad! Try it !!

Mine also now works after signing out of icloud and then signing back in

So does this not work on iOS 6 at all?

Problem solved thank you!!!

I had the same problem. Loging out of iCloud and then back in solved it. My iPhone with 7.0.3 now shows up under the share menu. 😉

Having similiar problems.. Initially my iPhone 5s didn't show up on the "Share" menu, but it appeared there alongside my retired and erased iPhone 4S a day or so after I installed Mavericks.. I signed out of back onto iCloud through my MBP and nothing has changed.. Sharing directions with my 5s works, but when I send it to my nonexistant 4S, the directions just disappear into the ether..

Any thoughts on how to remove this device from my iCloud/Apple maps?

Thanks!