BJCP 22A
Märzen/Oktoberfest-style (see 3B) beer with a sweet, smoky aroma and flavor and a somewhat darker color.
The intensity of smoke character can vary widely; not all examples are highly smoked. Allow for variation in the style when judging. Other examples of smoked beers are available in Germany, such as the Bocks, Hefe-Weizen, Dunkel, Schwarz, and Helles-like beers, including examples such as Spezial Lager. Brewers entering these styles should use Other Smoked Beer (22B) as the entry category.
Schlenkerla Rauchbier Märzen, Kaiserdom Rauchbier, Eisenbahn Rauchbier, Victory Scarlet Fire Rauchbier, Spezial Rauchbier Märzen, Saranac Rauchbier
You can view the complete style details on the BJCP website. The 2008 style guide is obsolete but there is a similar 2015 style that you can view below...
OG: 1.050-1.057
FG: 1.012-1.016
IBU: 20-30
SRM: 12.0-22.0
ABV: 4.8-6.0%