| 100% | ALPINE | 6 | Peaked and lofty |
| 56% | ALP | 3 | Lofty peak |
| 52% | AERY | 4 | Lofty, as a mountain peak |
| 51% | ALPS | 4 | Peaks in Austria and Switzerland |
| 51% | OSSA | 4 | Peak between Pelion and Olympus |
| 46% | AGAME | 5 | Peak performance, and an apt title for this puzzle |
| 43% | MTIDA | 5 | Peak in Turkey mentioned in both the "Iliad" and the "Aeneid" |
| 43% | KEPI | 4 | Military cap with a circular top and horizontal peak |
| 43% | MTHOPE | 6 | Antarctic summit between peaks named for faith and charity |
| 43% | LYNCH | 5 | "Twin Peaks" co-creator and "Mulholland Drive" director David ___ |
| 43% | MTIDA | 5 | Sacred peak in the "Iliad" and "Aeneid," for short |
| 42% | YAKSONTHEPHONE | 14 | Whose conversation might be about shaggy hair and Himalayan peaks? |
| 42% | MONTBLANC | 9 | Highest peak in the Alps, situated between France and Italy |
| 40% | HALL | 4 | ___ and Oates, pop-rock duo whose fame peaked post their track "Rich Girl" |
| 40% | SIMON | 5 | ___ and Garfunkel, folk-rock duo whose fame peaked post their "Mrs. Robinson" track |
| 39% | MOUNTEVEREST | 12 | Peak whose summit was first reached by 14-Across and 39-Across (2 wds.) |
| 39% | ACELA | 5 | It reaches its peak speed between Mansfield, Massachusetts, and Richmond, Rhode Island |
| 39% | USPS | 4 | Grp. whose peak season is between Black Friday and New Year's |
| 38% | CRIMSON | 7 | "___ Peak," 2015 film directed by Guillermo del Toro starring Tom Hiddleston and Jessica Chastain |
| 38% | PYRENEES | 8 | Mountain range between France and Spain whose highest peak is Pico de Aneto |
| 36% | PRIMETIME | 9 | When TV viewership peaks ... or a hint to 17-, 24-, 36- and 53-Across |
| 35% | CHER | 4 | Sonny and ___, pop-rock duo whose fame peaked post their "I Got You Babe" track |
| 35% | HILL | 4 | Peak smaller than a mountain ... and with 47a, a horror media franchise with both games and movies |
| 35% | AMICK | 5 | Actress Mädchen ___ who played waitress Shelly Johnson on "Twin Peaks" in 1990-1991 and 2017 |
| 34% | JIM | 3 | Kenny Loggins and ___ Messina, pop-rock duo whose fame peaked post their track "Danny's Song" |
| 34% | MONT | 4 | French peak, and after 3/4 of 3-Down, state admitted to the US on March 4, 1791 |
| 33% | GREENAROUNDTHEGILLS | 19 | Peaked |
| 33% | WAN | 3 | Peaked |
| 33% | ANEMIC | 6 | Peaked |