| |
| Del Mar National Horse Show - April 30-May 5, 2013 |
| RMI Spring Break 230101 - May 2-6, 2013 |
| LWSC Bridle Trails Classic 2013 - May 3-5, 2013 |
| BRAVE Tulips in the Air - May 4, 2013 |
| Camelot May - May 4-5, 2013 |
| HDHJA Central Oregon Spring Hunter Jumper Show - May 4-5, 2013 |
| Quarry Ridge Friendship Series Show - May 4, 2013 |
| SCHC 2013 Hunter/Jumper Series - May 4-5, 2013 |
| Spring Fling Invitational - May 4, 2013 Results Not Received |
| Starr 1 - May 4-5, 2013 |
| ECHO Horse Shows - May 5, 2013 |
| ETI Corral 8 English Horse Show - May 5, 2013 |
Fiesta del Sueno Series III - Hunter/Jumper Day - May 5, 2013 Canceled |
| Willowbrook Spring Hunter/Jumper Show #3 2013 - May 5, 2013 |
| |
| Showpark Ranch & Coast - May 7-12, 2013 |
| Mother's Day Classic - May 8-12, 2013 |
| RMI Spring Forward 257274 - May 8-12, 2013 |
| Colorado Springs Spring Preview - May 9-12, 2013 |
| QMS Spring Classic - May 9-12, 2013 |
| May Mother's Day Celebration - May 10-12, 2013 |
| NCWHA MayFest - May 10-12, 2013 |
| Texas Spring Classic - May 10-11, 2013 |
| Wickham Melbourne Show - May 10-11, 2013 Results Not Received |
| Gold Creek Hunter Show Series - May 11, 2013 |
| KDCTA - May 11, 2013 Results Not Received |
| Queenie Productions Schooling Show May - May 11-12, 2013 |
Sweetwater Show Series - May 11, 2013 Canceled |
The Novice Show - May 11, 2013 Canceled |
| Gold Creek Hunter Show Series - May 12, 2013 Results Not Received |
| Horseshows USA - May 12, 2013 |
| |
| 2013 Pacific Northwest Hunter & Jumper Horse Show - May 15-19, 2013 |
| Colorado Springs Spring Classic - May 16-19, 2013 |
| Caledonia Classic Silver & Gold 2013 - May 17-20, 2013 Results Not Received |
| Gold Coast Series May Horse Show - May 17-19, 2013 |
| NSHA - May 17-18, 2013 Results Not Received |
| RMI Mid-Florida III 316270 - May 17-19, 2013 |
| SSITS May Sun Bowl - May 17-20, 2013 |
| California Celebration - May 18-19, 2013 |
| Freeman Farm Horse Show - May 18, 2013 Results Not Received |
| Galway Downs County 6 - May 18-19, 2013 |
| SCHC/Rancho Riding Club Horse Show - May 18, 2013 |
| TASHA Spring Classic Horse Show - May 18-19, 2013 |
| Victoria Day Show - May 18-19, 2013 |
| Victory Horse Show - May 18-19, 2013 |
| Fiesta del Sueno Series III - Derby Day - May 19, 2013 Results Not Received |
| SFHJA-TVHSA at Stradivarius - May 19, 2013 |
| Showcase Horse Show - May 19, 2013 |
| |
| Old Orchard Farm Schooling Show - May 20, 2013 |
| 2013 Bishop Mule Days Celebration - May 21-26, 2013 |
| 2013 Edmonton Classic Horse Show - May 22-26, 2013 |
| Golden State Horse Show - May 22-27, 2013 |
| Rose City Opener - May 22-26, 2013 |
| Colorado Springs Spring Final - May 23-26, 2013 |
| Memorial Day Classic Horse Show - May 23-28, 2013 |
| Mid-South Spring Premiere Horse Show - May 23-25, 2013 |
| Pony Clubs Spring Classic Horse Show - May 24-26, 2013 |
| The Baroque Horse of the Midwest Spring Show - May 24-26, 2013 |
| Arbutus Meadows Spring Hunter Jumper Show - May 25-26, 2013 |
| Central Valley Horse Shows Western Show - May 25, 2013 |
| Foxton Farm May - May 25-26, 2013 |
| HSITP May Hunter/Jumper Show - May 25-26, 2013 |
| MHCSC Spring Classic - May 25-27, 2013 |
| SBCRC Summer - May 25-26, 2013 |
| Showpark County 2 - May 25-26, 2013 |
| Wheat City Classic Horse Show - May 25-27, 2013 |
| Anaheim Equestrian Association Hunter 1 - May 26, 2013 |
| |
| Murieta Summer Classic - May 29-June 2, 2013 |
| Nebraska Charity Horse Show - May 30-June 1, 2013 |
| Showpark June Jamboree - May 30-June 2, 2013 |
| NMHJA Sandia Special 4670 - May 31-June 2, 2013 |
| RMI Mid-Florida IV 316491 - May 31-June 2, 2013 |
| Trophy Show - May 31-June 2, 2013 |
| Winnemucca Mule Show & Races - May 31-June 2, 2013 |
