The National Scholastic Indoor Championship (NSIC) was the first national championship in any HS sport. It was organized by the Metropolitan Athletics Congress (MAC), which was an old version of the USATF NY Association. Many of the people who created that meet, which was last held in 2010, went on to create the National Scholastic Athletics Foundation, which is now the defacto HS National Championship. From 1999-2010, both meets were held on the same weekend, which led to some interesting attempts at “The Double” on back to back days. Below is the listing of NSIC Champions.
NSIC Indoor Boys 1 Mile Championship
| 2010 | Tyler Sorensen | CA | 6:23.62 | |
| 2009 | Tyler Sorensen | CA | 6:48.10 | |
| 2008 | Ricardo Vergara | TX | 6:36.96 | |
| 2007 | Ricardo Vergara | TX | 6:30.44 | |
| 2006 | Ricardo Vergara | TX | 6:47.83 | |
| 2005 | Christopher Diaz | TX | 6:51.72 | |
| 2004 | Zachary Pollinger | NJ | 6:21.66 | |
| 2003 | Zachary Pollinger | NJ | 6:19.69 | |
| 2002 | Adam Staier | ME | 6:46.09 | |
| 2001 | Benjamin Shorey | ME | 6:15.12 | |
| 2000 | Daniel Gurick | NY | 7:50.97 | |
| 1999 | Jean-Sebasti Beaucage | CAN | 6:41.95 | |
| 1998 | Brian Colby | WI | 6:31.10 | |
| 1997 | Scott Crafton | IN | 6:26.79 | |
| 1996 | Francois Berube | CAN | 6:30.83 | |
| 1995 | Kevin Eastler | ME | 6:11.98 | MR |
| 1994 | Kevin Eastler | ME | 6:22.43 | |
| 1993 | William Van Axen | NY | 6:24.43 | |
| 1992 | James Spahr | NY | 6:26.68 | |
| 1991 | Andy Lee | NY | 6:23.16 | |
| 1990 | Paul Tavares | NY | 6:30.39 | |
| 1989 | Paul Tavares | NY | 6:43.42 | |
| 1988 | Lennie Becker | MD | 6:38.91 | |
| 1987 | Reggie Davenport | NY | 6:39.54 | |
| 1986 | Curt Clausen | WI | 6:18.32 | |
| 1985 | John Toy | NY | 6:58.2 | |
| 1984 | Mike Flynn | NY | 7:13.55 |
NSIC Indoor Girls 1 Mile Championship
| 2010 | Abby Dunn | ME | 7:33.42 | |
| 2009 | Emilia Vaskyte | NY | 7:38.57 | |
| 2008 | Mary Dutkowski | NY | 7:41.06 | |
| 2007 | Jenna Monahan | NY | 7:38.16 | |
| 2006 | Tina Peters | OH | 7:25.71 | |
| 2005 | Tina Peters | OH | 7:33.67 | |
| 2004 | Tara Simonelli | NY | 7:24.50 | |
| 2003 | Maria Michta | NY | 7:17.93 | |
| 2002 | Maria Michta | NY | 7:20.56 | |
| 2001 | Kristen Jordan | NY | 7:14.93 | |
| 2000 | Colleen Schmidt | NY | 7:32.16 | |
| 1999 | Jamie Yedowitz | NY | 7:23.09 | |
| 1998 | Marina Crivello | CAN | 6:59.90 | MR |
| 1997 | Lisa Kutzing | NY | 7:07.31 | |
| 1996 | Lisa Kutzing | NY | 7:22.71 | |
| 1995 | Lisa Kutzing | NY | 7:24.67 | |
| 1994 | Melissa Baker | NY | 7:16.01 | |
| 1993 | Melissa Baker | NY | 7:12.90 | |
| 1992 | Melissa Baker | NY | 7:17.90 | |
| 1991 | Jennifer Grego | NY | 7:27.02 | |
| 1990 | Gretchen Eastler | ME | 7:23.84 | |
| 1989 | Jennifer Zalewski | IN | 7:45.94 | |
| 1988 | Christy Izzo | NY | 8:07.36 | |
| 1987 | Nora Comans | NY | 7:46.89 | |
| 1986 | Deirdre Collier | NY | 7:41.94 | |
| 1985 | Lynn Weik | NY | 7:36.72 | |
| 1984 | Donna Goldstein | NY | 8:04.57 |