Solo running

Since having kids I tend to do around 90% or my running on my own because I have to fit running in around my family and work.  It can be really tough.  When you have company there is always someone there to pull you along when you are struggling (and vice versa), it's fun, sociable and it can make you as physically stronger runner as you push to chase others down.  Solo running makes you stronger too - mentally - as you have to do all the 'work' yourself.

Here's a great piece on why women should strike out on their own every now and then...

Women: 7 Reasons You Should Go Solo