1. In your image-eding software, create a duplicate layer of the photo (Control [or Command] + J).
2. Select the lasso tool and outline the area you want to clone out. Pick 1 or 2 feather pixels from the menu to make the edges blend better.
3. Select the clone stamp tool and choose a large brush. While holding the Option key, click on the area you want to duplicate. Stamp over the lassoed area until you've covered the distracting elements.