Walking Challange anyone? (Cheryl)

I just wanted to see if anyone was interested in a walking challange? I am not sure exactly how to go about this but here are a few ideas..

• Each make a weekly goal for distance?
• Keep a tally on how many miles we have walked cumulatively?
• Pick a place like California or something and see how long it takes us to walk there cumulatively?
• Any other ideas? Please share!