| recordings |
|---|
| What Hurts the Most | live | Rascal Flatts | 3:34 |
| What Hurts the Most | cover | Kidz Bop | 3:29 |
| What Hurts the Most | cover | Kidz Bop | 3:29 |
| What Hurts the Most | cover | Kurt Hugo Schneider & Kirk Jay | 3:21 |
| What Hurts the Most | | Cascada | ?:?? |
| What Hurts the Most | | Cascada | 3:43 |
| What Hurts the Most | cover | Rascal Flatts | 3:34 |
| What Hurts the Most | cover | Cascada | 3:39 |
| What Hurts the Most | | Cascada | 3:29 |
| What Hurts the Most | | Cascada | 3:29 |
| What Hurts the Most | cover | Cascada | 3:40 |
| What Hurts the Most | cover | Cascada | 5:53 |
| What Hurts the Most | cover | Cascada | 2:29 |
| What Hurts the Most | cover | Cascada | 3:12 |
| What Hurts the Most | cover | Tigeroar | 3:30 |
| What Hurts the Most | | Mark Wills | 3:48 |
| What Hurts the Most | | Mark Wills | 3:47 |
| What Hurts The Most | | Cascada | 3:40 |
| What Hurts The Most | | Cascada | 3:41 |
| What Hurts the Most (24 Grooves remix) | cover | Cascada | 6:49 |
| What Hurts The Most (2008) | cover | Boyce Avenue | 3:00 |
| What Hurts the Most (club mix) | cover | Cascada | 3:38 |
| What Hurts the Most (club mix) | | Cascada | 3:31 |
| What Hurts the Most (club radio edit) | cover | Cascada | 2:53 |
| What Hurts the Most (club radio edit) | cover | Cascada | 3:57 |
| What Hurts the Most (Darren Styles mix) | cover | Cascada | 4:11 |
| What Hurts the Most (Darren Styles remix) | cover | Cascada | 5:04 |
| What Hurts the Most (Darren Styles remix) | cover | Cascada | 6:14 |
| What Hurts the Most (DJ Uto remix) | cover | Cascada | 3:25 |
| What Hurts the Most (extended mix) | cover | Cascada | 5:09 |
| What Hurts the Most (extended) | | Cascada | 3:43 |
| What Hurts the Most (Flip & Fill remix) | cover | Cascada | 5:47 |
| What Hurts the Most (Fugitive’s Megura remix) | cover | Cascada | 5:57 |
| What Hurts the Most (K‐Klass remix) | cover | Cascada | 5:56 |
| What Hurts the Most (original extended) | cover | Cascada | 5:17 |
| What Hurts the Most (radio soft mix) | cover | Cascada | 3:39 |
| What Hurts the Most (Riff & Raff mix) | cover | Cascada | 6:21 |
| What Hurts the Most (Riffs & Rays remix) | cover | Cascada | 8:29 |
| What Hurts the Most (Spencer & Hill dub mix) | cover | Cascada | 5:58 |
| What Hurts the Most (Spencer & Hill radio edit) | cover | Cascada | 3:30 |
| What Hurts the Most (Spencer & Hill remix) | cover | Cascada | 3:27 |
| What Hurts the Most (Spencer & Hill remix) | cover | Cascada | 4:56 |
| What Hurts the Most (Spencer & Hill remix) | cover | Cascada | 6:59 |
| What Hurts the Most (Spencer & Hill Remix) | | Cascada | 2:51 |
| What Hurts the Most (The Hot mix vocal up) | cover | Rascal Flatts | 3:34 |
| What Hurts the Most (The Hot mix) | cover | Rascal Flatts | 3:31 |
| What Hurts the Most (Topmodelz radio edit) | cover | Cascada | 3:45 |
| What Hurts the Most (Topmodelz remix) | cover | Cascada | 4:54 |
| What Hurts the Most (Topmodelz remix) | cover | Cascada | 5:34 |
| What Hurts the Most (Ultrabeat remix) | cover | Cascada | 5:51 |
| What Hurts the Most (Yanou’s Candlelight mix) | cover | Cascada | 3:54 |
