| Name | Color | Sex | Year of birth | Microchip | Sire | Dam | Breed | Breeder |
|---|---|---|---|---|---|---|---|---|
| Ustup | chestnut | c | 1979 | 09213 Prolog | 017774 Unika | Trotter | Omskii konzavod | |
| Usvyatka | d.-bay | f | 2019 | 900119000533926 | 012826(А) Can Anyone Explain | 028100 Ufa | Trotter | "Aleksandrovsk Stud N 12" |
| 020646 Utayka | d.-bay | f | 1981 | 010172(А) Tamerlane | 016548 Udal | Trotter | Gestut Moskowskiy N 1 | |
| Utcumque | l.bay | f | 1969 | American Trotter | Italy | |||
| 02579 Uteha | br. | f | 1924 | 0125 Bob Duglas | 01176 Utochka | Trotter | "Aleksandrovsk Stud N 12" | |
| Uteha | black | f | 1988 | 010663 Usilitel | 017934 Barhatnaya | Trotter | kh "Oborona strany" Pilnenskog | |
| 010462 Uteha | chestnut | f | 1946 | 04419 Kuzbass | 07825 Uraniya | Trotter | "Aleksandrovsk Stud N 12" | |
| 1022 Uteha | black | f | 1918 | Trotter | ||||
| 1021 Uteha | d.-bay | f | 1916 | Orlov trotter | ||||
| 10490 Uteha | black | f | 1950 | Orlov trotter | Kurganskii k.z. |