Where do I claim mi IRA distribution on my Turbotax forms?

You just enter the 1099R.  It will ask you follow up questions like if it was a RMD and how much.

Enter a 1099R under
Federal Taxes
Wages & Income
Then scroll way down to Retirement Plans and Social Security
Then IRA, 401(k), Pension Plan Withdrawals (1099-R) – Click Start

Don't type the bank name or try to import it.
At the bottom pick - Change How I enter my Form
Then on the next screen pick - I'll Type it in Myself

To enter your retirement income, Go to  Federal> Wages and Income>Retirement Plans and Social Security>IRA  401 k) Pension Plan Withdrawals to enter your 1099R.