Preheat your oven to 350°F (175°C). Grease a 9x5 inch loaf pan.
In a large bowl, combine flour, sugar, baking powder, baking soda, salt, and cinnamon.
In another bowl, whisk together oil, eggs, and vanilla extract.
Add the wet ingredients to the dry ingredients and mix until just combined.
Fold in the chopped peaches.
Pour the batter into the prepared loaf pan.
Bake for 60 minutes or until a toothpick inserted into the center comes out clean.
Let the bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.