In honor of Customer Appreciation Day at Subway, you can get a FREE regular footlong sub on April 10th with the purchase of another of equal or lesser value! Valid only on 4/10 only! No coupon required.
You will definitely want to call ahead to verify that your store is participating. To find your location, go here. I did call Subway corporate this morning to verify the promotion and they said that it is a national promotion, but it is up to each store whether or not to participate.