| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-4x100 | 1 | 42.41 | Boys Relay (Cedar Falls, IA) | IA 4A State Meet(IA), 2015-05-23(#1) |
| B-4x100 | 2 | 42.44 | Boys Relay (West Burlington, IA) | IA 2A State Meet(IA), 2015-05-23(#1) |
| B-4x100 | 3 | 42.49 | Boys Relay (Linn-Mar, IA) | IA 4A State Meet(IA), 2015-05-23(#2) |
| B-4x100 | 4 | 42.70 | Boys Relay (Ames, IA) | IA 4A State Meet(IA), 2015-05-23(#3) |
| B-4x100 | 5 | 42.76 | Boys Relay (Iowa City, IA) | IA 4A State Meet(IA), 2015-05-23(#3) |
| B-4x100 | 6 | 42.90 | Boys Relay (Hoover, IA) | IA 4A State Meet(IA), 2015-05-23(#4) |
| B-4x100 | 7 | 42.91 | Boys Relay (Johnston, IA) | IA 4A State Meet(IA), 2015-05-23(#5) |
| B-4x100 | 8 | 43.01 | Boys Relay (Regina, IA) | IA 2A State Meet(IA), 2015-05-23(#2) |
| B-4x100 | 9 | 43.03 | Boys Relay (Williamsburg, IA) | IA 3A State Meet(IA), 2015-05-23(#1) |
| B-4x100 | 10 | 43.05 | Boys Relay (Washington, IA) | IA 4A State Meet(IA), 2015-05-23(#7) |
| B-4x100 | 11 | 43.06 | Boys Relay (Glenwood, IA) | Drake Relays(IA), 2015-04-25(#3) |
| B-4x100 | 12 | 43.07 | Boys Relay (Dowling Catholic, IA) | IA 4A State Meet(IA), 2015-05-23(#8) |
| B-4x100 | 13 | 43.09 | Boys Relay (Ankeny Centennial, IA) | IA 4A State Meet(IA), 2015-05-23(#9) |
| B-4x100 | 13 | 43.09 | Boys Relay (East Des Moines, IA) | IA 4A State Meet(IA), 2015-05-23(#10) |
| B-4x100 | 15 | 43.14 | Boys Relay (Waukee, IA) | IA 4A State Meet(IA), 2015-05-23(#11) |
| B-4x100 | 16 | 43.16 | Boys Relay (Fort Dodge, IA) | IA 4A State Meet(IA), 2015-05-23(#12) |
| B-4x100 | 17 | 43.21 | Boys Relay (Waterloo West, IA) | IA 4A State Meet(IA), 2015-05-23(#13) |
| B-4x100 | 18 | 43.25 | Boys Relay (Bishop Heelan Catholic, IA) | IA 3A State Meet(IA), 2015-05-23(#2) |
| B-4x100 | 19 | 43.29 | Boys Relay (Davenport North, IA) | IA 4A State Meet(IA), 2015-05-23(#14) |
| B-4x100 | 20 | 43.45 | Boys Relay (Madrid, IA) | IA 2A State Meet(IA), 2015-05-23(#3) |
| B-4x100 | 21 | 43.46 | Boys Relay (Thomas Jefferson, IA) | IA 4A State Meet(IA), 2015-05-23(#15) |
| B-4x100 | 22 | 43.50 | Boys Relay (Bettendorf, IA) | Bettendorf Boys ABC Invitational(IA), 2015-05-01(#1) |
| B-4x100 | 23 | 43.52 | Boys Relay (Iowa City West, IA) | IA 4A State Meet(IA), 2015-05-23(#16) |
| B-4x100 | 24 | 43.60 | Boys Relay (Davenport West, IA) | Bettendorf Boys ABC Invitational(IA), 2015-05-01(#2) |
| B-4x100 | 25 | 43.64 | Boys Relay (Solon, IA) | IA 3A State Meet(IA), 2015-05-23(#2) |
| B-4x100 | 26 | 43.66 | Boys Relay (Vinton-Shellsburg, IA) | IA 3A State Meet(IA), 2015-05-23(#3) |
| B-4x100 | 27 | 43.73 | Boys Relay (West Des Moines Valley, IA) | Drake Relays(IA), 2015-04-25(#10) |
| B-4x100 | 27 | 43.73 | Boys Relay (Western Dubuque, IA) | IA 4A State Meet(IA), 2015-05-23(#18) |
| B-4x100 | 29 | 43.78 | Boys Relay (Knoxville, IA) | IA 3A State Meet(IA), 2015-05-23(#5) |
| B-4x100 | 30 | 43.82 | Boys Relay (Webster City, IA) | IA 3A State Meet(IA), 2015-05-23(#6) |
| B-4x100 | 31 | 43.83 | Boys Relay (Woodward-Granger, IA) | IA 2A State Meet(IA), 2015-05-23(#3) |
| B-4x100 | 32 | 43.85 | Boys Relay (Nevada, IA) | IA 3A State Meet(IA), 2015-05-23(#8) |
| B-4x100 | 33 | 43.88 | Boys Relay (Wapsie Valley, IA) | IA 1A State Meet(IA), 2015-05-23(#1) |
| B-4x100 | 34 | 43.94 | Boys Relay (Sioux Center, IA) | IA 2A State Meet(IA), 2015-05-23(#4) |
| B-4x100 | 35 | 43.95 | Boys Relay (Central Clinton, IA) | IA 3A State Meet(IA), 2015-05-23(#9) |
| B-4x100 | 36 | 43.96 | Boys Relay (John F Kennedy, IA) | IA 4A State Meet(IA), 2015-05-23(#19) |
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| | | See more performances for B-4x100 | | |
| Event | Rank | Mark | By | Meet |
| G-4x100 | 1 | 47.55 | Girls Relay (Thomas Jefferson, IA) | Drake Relays(IA), 2015-04-25(#1) |
| | | National Elites above. State Elites below | | |
| G-4x100 | 2 | 48.07 | Girls Relay (Waukee, IA) | Drake Relays(IA), 2015-04-25(#2) |
| G-4x100 | 3 | 48.53 | Girls Relay (East Des Moines, IA) | IA 4A State Meet(IA), 2015-05-23(#2) |
| G-4x100 | 4 | 48.73 | Girls Relay (Pleasant Valley, IA) | IA 4A State Meet(IA), 2015-05-23(#3) |
| G-4x100 | 5 | 48.74 | Girls Relay (Urbandale, IA) | IA 4A State Meet(IA), 2015-05-23(#4) |
| G-4x100 | 6 | 48.94 | Girls Relay (Wahlert, IA) | IA 3A State Meet(IA), 2015-05-23(#1) |
| G-4x100 | 7 | 49.38 | Girls Relay (Boone, IA) | IA 3A State Meet(IA), 2015-05-23(#2) |
| G-4x100 | 8 | 49.46 | Girls Relay (Waterloo East, IA) | IA 4A State Meet(IA), 2015-05-23(#6) |
| G-4x100 | 9 | 49.52 | Girls Relay (Cedar Falls, IA) | IA 4A State Meet(IA), 2015-05-23(#7) |
| G-4x100 | 10 | 49.68 | Girls Relay (Pella, IA) | IA 3A State Meet(IA), 2015-05-23(#3) |
| G-4x100 | 11 | 49.77 | Girls Relay (Ankeny Centennial, IA) | IA 4A State Meet(IA), 2015-05-23(#7) |
| G-4x100 | 12 | 49.80 | Girls Relay (Southeast Polk, IA) | Drake Relays(IA), 2015-04-25(#7) |
| G-4x100 | 13 | 49.96 | Girls Relay (A-D-M, IA) | IA 3A State Meet(IA), 2015-05-23(#2) |
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| | | See more performances for G-4x100 | | |
