Is there any truth in the legend about the birth of Siddhartha? This Life of the Buddha (also mentioned among Wikipedia's Miracles of Gautama Buddha) says,

According to the legends about this birth, the baby began to walk seven steps forward and at each step a lotus flower appeared on the ground. Then, at the seventh stride, he stopped and with a noble voice shouted:

&quot;I am chief of the world,
Eldest am I in the world,
Foremost am I in the world.
This is the last birth.
There is now no more coming to be.&quot;


However I feel like the legend is far-fetched from the truth. Any comments or alternative views are very welcome.
It depends what you mean by truth. If you mean did this actually occur then I would agree it does seem far fetched. However if you understand it as a myth then it will have truth. I think sometimes we understand myths as been basically being synonymous with fiction. However myths have a deeper truth that is relevant to the culture or society that it comes from. Authors such as Joseph Campbell go further and say that myths have a truth that cuts across cultures and societies - a comparative mythology.

The story above could be understood as a variant of the hero story which typically have miraculous or supernatural beginnings. The story of Christ could be understood in the same way (though obviously not everyone would be happy with this interpretation). This kind of comparative mythology can be seen in other places in the Buddha's life story. His enlightenment experience can be seen as occurring on the world navel (axis mundi) as well as more prosaically under the Bodhi tree.

Joeseph Campbells book, The Hero with a 1000 Faces, is a good place to start if you are interested in these ideas.