The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.

• $250,000 Challenge SportMods races (1 member)
• $250,000 Challenge Stock Cars races (1 member)
• 1000 km of Buenos Aires Individual Driver Result Pages (335 members)
• 1000 km of Buenos Aires races (9 members)
• 100K Upgrade races (1 member)
• 1200cc Winged Mini Sprint Division Tulsa Shootout Individual Driver Result Pages (67 members)
• 12 Hours of Sebring Individual Driver Result Pages (3,832 members)
• 12 Hours of Sebring races (73 members)
• 16th Street Speedway - Late Model Division races (1 member)
• 1894 Yearly Individual Driver Result Pages (4 members)
• 1894 races (1 member)
• 1895 Yearly Individual Driver Result Pages (15 members)
• 1895 races (2 members)
• 1900 Yearly Individual Driver Result Pages (5 members)
• 1900 races (1 member)
• 1901 Yearly Individual Driver Result Pages (3 members)
• 1901 races (1 member)
• 1902 Yearly Individual Driver Result Pages (6 members)
• 1902 races (1 member)
• 1903 Yearly Individual Driver Result Pages (12 members)
• 1903 races (1 member)
• 1904 Yearly Individual Driver Result Pages (35 members)
• 1904 races (2 members)
• 1905 AAA Champ Car Series Individual Driver Result Pages (17 members)
• 1905 AAA Champ Car Series races (11 members)
• 1905 Individual Driver Result Pages (17 members)
• 1905 Yearly Individual Driver Result Pages (39 members)
• 1905 races (13 members)
• 1906 Yearly Individual Driver Result Pages (35 members)
• 1906 races (2 members)
• 1907 Yearly Individual Driver Result Pages (6 members)
• 1907 races (13 members)
• 1908 races (1 member)
• 1909 AAA Champ Car Series Individual Driver Result Pages (147 members)
• 1909 AAA Champ Car Series races (24 members)
• 1909 Individual Driver Result Pages (147 members)
• 1909 Yearly Individual Driver Result Pages (137 members)
• 1909 races (24 members)
• 1910 AAA Champ Car Series Individual Driver Result Pages (89 members)
• 1910 AAA Champ Car Series races (19 members)
• 1910 Individual Driver Result Pages (89 members)
• 1910 Yearly Individual Driver Result Pages (86 members)
• 1910 races (19 members)
• 1911 AAA Champ Car Series Individual Driver Result Pages (105 members)
• 1911 AAA Champ Car Series races (21 members)
• 1911 Individual Driver Result Pages (105 members)
• 1911 Yearly Individual Driver Result Pages (91 members)
• 1911 races (21 members)
• 1912 AAA Champ Car Series Individual Driver Result Pages (79 members)
• 1912 AAA Champ Car Series races (18 members)