Relay

Applefest, The Most Rewarding and Beautiful Half-Marathon in the Northeast
The Applefest Half Marathon in Hollis, New Hampshire provides more awards and rewards than any other half marathon. And it travels a beautiful, scenic, rural New England course in peak foliage season. This run is beautiful; it is rewarding, it is Applefest. Many run just for the post-race food—especially the famous apple crisp—or the beautiful long-sleeve T's. And this year, they have added a relay—a relay that is already generating tremendous interest.
Also: Official Applefest Website
Also: Register On-line

Race in the Rockies: The Creative Restaurants Banff-Calgary Road Race
Whether it's the beauty of the terrain, the challenge of the hills, the mystique of the miles or a chance to run with friends, the Banff-Calgary remains an intriguing and unique race offering an unforgettable experience for all participants.
Also: Race website

Reach the Beach Relay, a Road Trip for Adults
Teams of 12 tackle 200 miles of New England countryside in a 24-hour, all-night runfest that is one of running's most social events.
Also: Reach the Beach website
Also: Online race registration