I have very fair skin and every summer I start out with very white legs and arms. Eventually I start to get all kinds of tan lines from my running shorts, running watch and running tops. Of course a watch tan is very cool to show off to all my friends but it does not go with a wedding dress (or a bridesmaids dress). Neither does criss cross tan lines on my back.
How to avoid summer running tan lines:
Option 1: Run in the morning
Option 2: When running in the morning is not possible,
Wear simple running tops that wont produce weird tan lines and allows for easy sunscreen application.
Applying lots of sunscreen!
Wearing hat/visor and sunglasses.
So far so good - no tan lines that I can see, but this is just the start of the summer!