Jack Speth is a racing driver who competes in Ligier JS F4 Series. Speth has recorded 3 wins and 5 podiums from 5 starts.[1]
A Racer Rating of 3,076 ranks Speth 8141th of 40,700 indexed drivers, on an Elo scale where the strongest reach the high 8,000s. It is built from every indexed race in the driver's file.
| 2026-06-14 | Racing America At Mid Ohio | P3 | +36 |
| 2026-06-14 | Racing America At Mid Ohio | P1 | +105 |
| 2026-06-13 | Racing America At Mid Ohio | P2 | +81 |
| 2026-05-17 | Racing America At Road America | P1 | +119 |
| 2026-05-16 | Racing America At Road America | P1 | +135 |
| Rating won | Race | Series | Finish |
|---|---|---|---|
| +135 | Racing America At Road America 2026 | Ligier JS F4 Series | P1 |
| +119 | Racing America At Road America 2026 | Ligier JS F4 Series | P1 |
| +105 | Racing America At Mid Ohio 2026 | Ligier JS F4 Series | P1 |
| +81 | Racing America At Mid Ohio 2026 | Ligier JS F4 Series | P2 |
| +36 | Racing America At Mid Ohio 2026 | Ligier JS F4 Series | P3 |
| Season | Series | Team | Races | Wins | Podiums | DNFs | Poles | Points | Pos | Gain/Loss | Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | ▸Ligier JS F4 Series | 5 | 3 | 5 | 0 | 0 | 0 | P1 | +1,726 | 3,076 |
| Rival | Rating | Raced | Ahead | Behind | Record |
|---|---|---|---|---|---|
| 🏳️ Beckham Jacir | 2,954 | 5 | 5 | 0 | 100% |
| 🏳️ Lazaro Bainotti | 2,816 | 5 | 4 | 1 | 80% |
| 🏳️ AJ Abdullah | 2,492 | 5 | 5 | 0 | 100% |
| 🏳️ Ava Hanssen | 2,428 | 5 | 5 | 0 | 100% |
| 🏳️ Tyler Wade | 2,252 | 5 | 5 | 0 | 100% |
| 🏳️ Ella White | 2,149 | 5 | 5 | 0 | 100% |
| 🇺🇸 Alexander Savage | 2,140 | 5 | 5 | 0 | 100% |
| 🏳️ Edward Kennedy | 3,052 | 3 | 1 | 2 | 33% |
| # | Driver | Series | Rating |
|---|---|---|---|
| 8,131 | 🇦🇺 Antonio Astuti | S5000 | 3,077 |
| 8,132 | 🇨🇦 Marco Kacic | IMSA VP Racing SportsCar Challenge | 3,077 |
| 8,133 | 🇺🇸 Richard Jarvis Jr. | NASCAR Xfinity | 3,077 |
| 8,134 | 🇺🇸 Ryan Hall | Zenith Racing Series | 3,077 |
| 8,135 | 🇯🇵 Tomiko Yoshikawa | FIA GT Championship | 3,077 |
| 8,136 | 🇺🇸 Chris Young, Jr. | NASCAR Whelen Modified Tour | 3,076 |
| 8,137 | 🇺🇸 D.J. Hoelzle | NASCAR Xfinity | 3,076 |
| 8,138 | 🇮🇪 Daniel Kelleher | Spanish F4 | 3,076 |
| 8,139 | 🇺🇾 Gastón Irazú | US F4 | 3,076 |
| 8,140 | 🇬🇧 Ian McKellar Jr. | FIA GT Championship | 3,076 |
| 8,141 | 🏳️ Jack Speth | Ligier JS F4 Series | 3,076 |
| 8,142 | 🇧🇪 Jules Castro | Italian F4 | 3,076 |
| 8,143 | 🇩🇰 Lucas Daugaard | Nürburgring Langstrecken-Serie | 3,076 |
| 8,144 | 🇬🇧 Paul HOGARTH | Ferrari Challenge | 3,076 |
| 8,145 | 🏳️ Scott Kusy | PCA Club Racing | 3,076 |
| 8,146 | 🇬🇧 Steve Arnold | International Formula 3000 | 3,076 |
| 8,147 | 🇺🇸 Tom Berte | ARCA Menards Series | 3,076 |
| 8,148 | 🏳️ Alan Isambard | SKUSA SuperNationals | 3,075 |
| 8,149 | 🇻🇪 Anthony Famularo | Italian F4 | 3,075 |
| 8,150 | 🇺🇸 Francesco Melandri | IMSA Prototype Challenge | 3,075 |
| 8,151 | 🇩🇪 Michael Rebhan | Nürburgring 24 Hours | 3,075 |
Jack Speth is an entry-level professional racing in the Ligier JS F4 Series, a national single-class junior formula championship in the United States. He is in his first indexed season of racing, competing in 2026.[1]
Through five rounds to date, Speth has taken three wins and five podium finishes, leading the championship standings. He has beaten Edward Kennedy, an entry-level professional with experience in USF Juniors and national karting, and regularly finishes ahead of semi-professional Beckham Jacir, a series regular with seventeen starts in the Ligier JS F4 Series.[2]