| 1982 · Trofeo Filippo Caracciolo, Monza | 5 | 81 | 3. Gr.5 | S Scuderia Vesuvio | Mario Casoni · Joe Castellano · Mark Thatcher | Lancia Beta Montecarlo ASK U | — | 16 | WSPR historical record |
| 1981 · XXI. Coppa Florio, 6 ore Enna-Pergusa | entry_only | - | S2.0 | Pasquale Barberio | Pasquale Barberio · Mario Casoni | Osella PA8 BMW | — | | WSPR historical record |
| 1980 · 6 h Vallelunga | retired | 45 | S2.0 | Fabio Siliprandi | Fabio Siliprandi · Arcadio Pezzali · Mario Casoni | Lucchini - BMW | — | 11 | WSPR historical record |
| 1980 · Mugello 6 Hours | retired | 15 | S2.0 | Ateneo | "Amphicar" · Luigi Moreschi · Mario Casoni | Osella PA7 BMW | — | 34 | WSPR historical record |
| 1980 · Monza 1000 Kilometres | retired | 43 | S2.0 | Ateneo | Mario Casoni · "Amphicar" · Luigi Moreschi | Osella PA7 BMW | — | 87 | WSPR historical record |
| 1979 · 19. Coppa Florio, Pergusa | retired | 12 | Gr.5 | Ateneo | Luigi Moreschi · Mario Casoni · "Amphicar" | BMW 320i | — | 38 | WSPR historical record |
| 1979 · 19. Coppa Florio, Pergusa | did_not_start | 31 | S | Ateneo | Mario Casoni · "Amphicar" · Luigi Moreschi | Osella PA7 BMW | — | | WSPR historical record |
| 1979 · Trofeo Ignazio Giunti, Vallelunga | retired | 19 | S+2.0 | Joest Racing | Reinhold Jöst · Mario Casoni · Volkert Merl | Porsche 908/3 Turbo | — | 65 | WSPR historical record |
| 1978 · 6 h Mugello | 17 | 7 | 3. Gr.5 | Sportwagen | Mario Casoni · Corrado Manfredini | Porsche 935 | — | 133 | WSPR historical record |
| 1978 · 6 h Dijon | retired | 11 | Gr.5 | Carlo Noce | Mario Casoni · Dino Mallet | Porsche 935 | — | 31 | WSPR historical record |
| 1977 · 500 kms de I'ACF, Dijon-Prenois | entry_only | 3 | S3.0 | Marco Capoferri | Mario Casoni · Marco Capoferri | Lola T286 Ford | — | | WSPR historical record |
| 1977 · Trofeo Filippo Caracciola, Monza | entry_only | 12 | S3.0 | Mario Casoni | Mario Casoni · Marco Capoferri | Lola T286 Ford | — | | WSPR historical record |
| 1977 · Trofeo Ignazio Giunti, Vallelunga | entry_only | 3 | S3.0 | — | Mario Casoni · Marco Capoferri | Lola T286 Ford | — | | WSPR historical record |
| 1977 · Coppa Florio, Pergusa | 5 | 6 | 2. S3.0 | Citta dei Mille | Mario Casoni · Corrado Manfredini | Lola T282 Ford | — | 88 | WSPR historical record |
| 1977 · Coppa Florio, Pergusa | did_not_start | 4 | S3.0 | Citta dei Mille | Gabriele Gottifredi · Mario Casoni · Marco Capoferri | Lola T286 Ford Turbo | — | | WSPR historical record |
| 1976 · Trofeo Filippo Caracciolo, Monza 4 Hours | retired | 9 | S3.0 | Marco Capoferri | Mario Casoni · Marco Capoferri | Lola T390 Ford | — | 28 | WSPR historical record |
| 1976 · Trofeo Ignazio Giunti, Imola 500 Kilometres | retired | 6 | S3.0 | Nettuno | Mario Casoni · Marco Capoferri | Lola T390 Ford | — | 6 | WSPR historical record |
| 1976 · Coppa Florio, Enna 4 Hours, Pergusa | retired | 1 | S3.0 | Autodelta SpA | Arturo Merzario · Mario Casoni | Alfa Romeo 33TS12 | — | 48 | WSPR historical record |
| 1976 · 500 km des ACF Dijon-Prenois | 10 | 32 | 7. S3.0 | Marco Capoferri | Mario Casoni · Marco Capoferri | Lola T390 Ford | — | 128 | WSPR historical record |
| 1976 · Elan Trophy, Salzburgring | 10 | - | 4. S3.0 | Marco Capoferri | Mario Casoni · Marco Capoferri | Lola T390 Ford | — | 61 | WSPR historical record |
| 1975 · 1975 24 Hours of Le Mans | 4 | 15 | S 3.0 | Joest Racing | Reinhold Joest · Mario Casoni · Jürgen BarthReinhold Joest Mario Casoni Jürgen Barth | Porsche 908 /03 | Porsche 3.0L F8 | 326 | Wikipedia contributors · CC BY-SA 4.0 |
| 1975 · 1000 km Mugello (150 laps) | 8 | 11 | 6. S3.0 | Jöst Racing | Jürgen Barth · Ernst Kraus · Mario Casoni | Porsche 908/3 | — | 139 | WSPR historical record |
| 1975 · 1000 km Mugello (150 laps) | retired | 9 | S3.0 | Jöst Racing | Reinhold Jöst · Mario Casoni | Porsche 908/3 Turbo | — | 38 | WSPR historical record |
| 1975 · 800 km Dijon | 2 | 10 | 2. S3.0 | Scuderia Nettuno Ovoro | Reinhold Jöst · Mario Casoni | Porsche 908/3 Turbo | — | 238 | WSPR historical record |
| 1975 · Trofeo F. Carraciolo, Monza | 2 | 5 | 2. S3.0 | Scuderia Nettuno Ovoro | Reinhold Jöst · Mario Casoni | Porsche 908/3 Turbo | — | 171 | WSPR historical record |
| 1975 · Spa 1000 Kilometres, Spa-Francorchamps | 7 | 6 | 3. S3.0 | Scuderia Nettuno Ovoro | Jürgen Barth · Mario Casoni · Reinhold Jöst | Porsche 908/3 | — | 48 | WSPR historical record |
| 1975 · Spa 1000 Kilometres, Spa-Francorchamps | retired | 5 | S3.0 | Scuderia Nettuno Ovoro | Reinhold Jöst · Mario Casoni | Porsche 908/3 Turbo | — | 3 | WSPR historical record |
| 1975 · Coppa Florio, Enna-Pergusa | 3 | 4 | 3. S3.0 | Scuderia Nettuno Ovoro | Reinhold Jöst · Mario Casoni | Porsche 908/4 Turbo | — | 184 | WSPR historical record |
| 1975 · 1000 km Nürburgring | retired | 9 | S3.0 | Scuderia Nettuno Ovoro | Reinhold Jöst · Mario Casoni | Porsche 908/4 Turbo | — | 2 | WSPR historical record |
| 1975 · 1000 km Zeltweg | 3 | 5 | 3. S3.0 | Scuderia Nettuno Ovoro | Reinhold Jöst · Mario Casoni | Porsche 908/4 Turbo | — | 102 | WSPR historical record |
| 1975 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | 4 | 8 | 4. S3.0 | Scuderia Brescia Corse | Reinhold Jöst · Mario Casoni | Porsche 908/3 Turbo | — | 149 | WSPR historical record |
| 1974 · 1000 km Monza | 7 | 14 | 7. S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 161 | WSPR historical record |
| 1974 · 1000 km Spa | entry_only | 10 | S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | | WSPR historical record |
| 1974 · 1000-km-Rennen Nürburgring | 19 | 12 | 9. S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 28 | WSPR historical record |
| 1974 · 1000 km Imola | retired | 8 | S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 43 | WSPR historical record |
| 1974 · 1000 km Le Castellet | 4 | 16 | 4. S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 119 | WSPR historical record |
| 1974 · Brands Hatch BA 1000 Kilometres | 17 | 8 | S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 181 | WSPR historical record |
| 1973 · 24 h Daytona | retired | 57 | S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni · Paul Blancpain | Porsche 908/03 | — | 244 | WSPR historical record |
| 1973 · Vallelunga 6 Hours | 5 | 12 | 5. S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 272 | WSPR historical record |
| 1973 · Dijon 1000 Kilometres | retired | 7 | S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 131 | WSPR historical record |
| 1973 · Monza 1000 Kilometres | retired | 12 | S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 1 | WSPR historical record |
| 1973 · ADAC 1000 Kilometres, Nürburgring | retired | 12 | S3.0 | Jolly Club | Giorgio Pianta · Mario Casoni · DNS - Pino Pica | Lola T280/2 Ford | — | 6 | WSPR historical record |
| 1973 · ADAC 1000 Kilometres, Nürburgring | did_not_start | 10 | S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | | WSPR historical record |
| 1972 · 1972 24 Hours of Le Mans | 3 | 60 (reserve) | S 3.0 | Siffert ATE Racing | Reinhold Joest · Mario CasoniReinhold Joest Michel Weber Mario Casoni | Porsche 908 LH Coupé | Porsche 3.0L F8 | 325 | Wikipedia contributors · CC BY-SA 4.0 |
| 1972 · Watkins Glen 6 Hours | 5 | 42 | 5. S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 166 | WSPR historical record |
| 1972 · BOAC 1000 Kilometres, Brands Hatch | retired | 1 | S3.0 | Jöst Racing Team | Reinhold Jöst · Mario Casoni | Porsche 908/03 | — | 110 | WSPR historical record |
| 1972 · Monza 1000 Kilometres | 7 | 43 | GT+2.0 | Scuderia Brecia Corse | Mario Casoni · "Pooky" | De Tomaso Pantera | — | 122 | WSPR historical record |
| 1972 · ADAC 1000 Kilometres, Nürburgring | 31 | 9 | 6. S3.0 | Joest Racing | Reinhold Jöst · Mario Casoni · Wilhelm Bartels | Porsche 908/03 | — | 33 | WSPR historical record |
| 1971 · Austrian 1000 Kilometres, Zeltweg | 4 | 18 | 2. S5.0 | Scuderia Brescia Corse | "Pam" · Mario Casoni | Ferrari 512M | — | 159 | WSPR historical record |
| 1971 · Trofeo Filippo Caracciolo, Monza 1000 Kilometres | retired | 38 | P2.0 | Giovanni Alberti | Mario Casoni · Giovanni Alberti | Chevron B19 Ford | — | 43 | WSPR historical record |
| 1970 · 1000 km Monza | retired | 23 | S2.0 | Abarth-Osella | Johannes Ortner · Mario Casoni | Abarth 2000S | — | 71 | WSPR historical record |
| 1970 · 1000 km Monza | entry_only | 45 | P2.0 | Abarth-Osella | Johannes Ortner · Mario Casoni | Abarth 2000SP | — | | WSPR historical record |
| 1970 · Targa Florio | did_not_start | 42 | P3.0 | Abarth-Osella | Mario Casoni · Jonathan Williams | Abarth 3000SP | — | | WSPR historical record |
| 1969 · Austrian GP, 1000 km Zeltweg | retired | 8 | P3.0 | US Autodelta S.p.A. | Mario Casoni · Teodoro Zeccoli | Alfa Romeo T33/3 ASK | — | | WSPR historical record |
| 1969 · 12 h Sebring | 66 | 32 | P3.0 | Autodelta SpA | Mario Casoni · Andrea de Adamich · DNS - John Surtees | Alfa Romeo T33-3 | — | 15 | WSPR historical record |
| 1969 · 12 h Sebring | entry_only | 40T | S3.0 | Autodelta SpA | Mario Casoni | Alfa Romeo T33/2 | — | | WSPR historical record |
| 1969 · 53rd Targa Florio, Piccolo Madonie | retired | 174 | S5.0 | Antonio Zadra | Antonio Zadra · Mario Casoni · DNS - Giuseppe Dalla Torre | Alfa Romeo T33/2 | — | 3 | WSPR historical record |
| 1969 · 53rd Targa Florio, Piccolo Madonie | did_not_start | 172 | S5.0 | Autodelta SpA | Mario Casoni · Spartaco Dini | Alfa Romeo T33/2 | — | | WSPR historical record |
| 1969 · ADAC 1000 kilometres Nürburgring | entry_only | 15 | P3.0 | Autodelta | Mario Casoni | Alfa Romeo T33/3 | — | | WSPR historical record |
| 1968 · 24 h Daytona | 7 | 22 | 6. P | Autodelta SpA | Mario Casoni · Giampiero Biscaldi · Teodoro Zeccoli | Alfa Romeo T33/2 | — | 594 | WSPR historical record |
| 1968 · 24 h Daytona | source_section_running_in_practice | 22T | P | Autodelta SpA | Mario Casoni | Alfa Romeo T33/2 | — | | WSPR historical record |
| 1968 · 1000 km Monza | entry_only | 24 | P2.0 | Autodelta | Nanni Galli · Mario Casoni | Alfa Romeo 33/2 | — | | WSPR historical record |
| 1968 · 52nd Targa Florio, Piccolo Madonie | 3 | 192 | 2. P2.0 | Autodelta SpA | Lucien Bianchi · Mario Casoni | Alfa Romeo T33/2 | — | 10 | WSPR historical record |
| 1968 · 1000 km Nürburgring | did_not_start | 6 | P3.0 | Alfa Romeo Deutschland | Mario Casoni | Alfa Romeo T33/2.5 | — | | WSPR historical record |
| 1967 · 1967 24 Hours of Le Mans | DNF | 18 | S 5.0 | Scuderia Filipinetti | Umberto Maglioli · Mario CasoniUmberto Maglioli Mario Casoni | Ford GT40 Mk.I | Ford 4.7L V8 | 116 | Wikipedia contributors · CC BY-SA 4.0 |
| 1967 · 24 h Daytona | retired | 9 | S+2.0 | Scuderia Brescia Corse | Umberto Maglioli · Mario Casoni | Ford GT40 | — | 93 | WSPR historical record |
| 1967 · Sports Car Grand Prix Österreich, Zeltweg | entry_only | 21 | S2.0 | Scuderia Brescia Corse | Mario Casoni · Luigi Taramazzo | Porsche 906 | — | | WSPR historical record |
| 1967 · 12 h Sebring | 56 | 33 | P2.0 | Scuderia Brescia Corse | Jonathan Williams · Mario Casoni | Ferrari Dino 206S | — | 5 | WSPR historical record |
| 1967 · 1000 km Monza | retired | 18 | P2.0 | Scuderia Brescia Corse | Mario Casoni · "Shangri-La" | Ferrari Dino 206S | — | | WSPR historical record |
| 1967 · 51st Targa Florio, Piccolo Madonie | retired | 156 | P+2.0 | SpA Ferrari SEFAC | Günther Klass · Mario Casoni | Ferrari Dino 206S | — | 1 | WSPR historical record |
| 1967 · GP Mugello, Circuito del Mugello | retired | 3 | P+2.0 | Scuderia Filipinetti | Mario Casoni · Herbert Müller | Ferrari 330P3/4 | — | 0 | WSPR historical record |
| 1966 · 1966 24 Hours of Le Mans | DNA | 37 | P 2.0 | SpA Ferrari SEFAC | Mario CasoniGiampiero Biscaldi Mario Casoni | Dino 206 S | Ferrari 1986cc V6 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1966 · Austrian Sports Car Grand Prix, Zeltweg | 7 | 8 | 2. S+2.0 | Scuderia Brescia Corse | Mario Casoni | Ford GT40 | — | 152 | WSPR historical record |
| 1966 · 12 h Sebring | entry_only | 45 | P2.0 | SpA Ferrari SEFAC | Giampiero Biscaldi · Mario Casoni | Ferrari Dino 206S | — | | WSPR historical record |
| 1966 · 1000 km Monza | retired | 37 | P2.0 | Scuderia St. Ambroeus | Giampiero Biscaldi · Mario Casoni | Ferrari Dino 206S | — | | WSPR historical record |
| 1966 · 50th Targa Florio, Piccolo Madonie | 14 | 210 | 2. P2.0 | Scuderia St. Ambroeus | Giampiero Biscaldi · Mario Casoni | Ferrari Dino 206S | — | 9 | WSPR historical record |
| 1966 · Circuit of Mugello | entry_only | - | S+1.6 | — | Umberto Maglioli · Mario Casoni | Ford GT40 | — | | WSPR historical record |
| 1966 · Circuit of Mugello | entry_only | 159 | S+1.6 | — | Mario Casoni · Nino Vaccarella | Ferrari 250LM | — | | WSPR historical record |
| 1966 · Coppa Cittá di Enna, Pergusa | not_classified | 54 | S+1.6 | Scuderia Brescia Corse | Mario Casoni | Ford GT40 | — | 47 | WSPR historical record |
| 1965 · 1965 24 Hours of Le Mans | DNF | 40 | P 1.6 | SpA Dino SEFAC | Giancarlo Baghetti · Mario CasoniGiancarlo Baghetti Mario Casoni | Dino 166 P | Ferrari 1593cc V6 | 2 | Wikipedia contributors · CC BY-SA 4.0 |
| 1965 · XII Circuito del Mugello, 500 Kilometres | 1 | 124 | 1. GTN+2.5 | Montegrappa | Mario Casoni · Antonio Nicodemi | Ferrari 250LM | — | 8 | WSPR historical record |
| 1965 · Coppa Citta di Enna | 1 | 38 | 1. GTN+2.5 | — | Mario Casoni | Ferrari 250LM | — | 105 | WSPR historical record |
| 1965 · 12 h Sebring | 64 | 8 | SR | Bizzarini Automobili | Silvio Moser · Mario Casoni · DNS - David Greenblatt | Iso Grifo A3C Chevrol | — | 16 | WSPR historical record |
| 1965 · 1000 km Monza | 5 | 64 | 4. P+2.0 | Giotto Bizzarini Automobili | Pierre Noblet · Mario Casoni | Iso Grifo A3C Chevrol | — | 92 | WSPR historical record |
| 1965 · 49th Targa Florio, Piccolo Madonie | retired | 138 | GT-N+2.5 | Jolly Club | Sergio Bettoja · Andrea de Adamich · Mario Casoni | Ferrari 250LM | — | 8 | WSPR historical record |
| 1965 · Grand Prix Spa, 500 km Spa-Francorchamps | entry_only | 9 | P+2.0 | Bizzarini Automobili | Mario Casoni | Iso Grifo A3C Chevrolet | — | | WSPR historical record |
| 1964 · 1000 km de Paris, Montlhéry | 11 | 15 | 3. P+3.0 | Giotto Bizzarini | Mario Casoni · Odoardo Govoni | Iso Grifo A3C Chevrol | — | 120 | WSPR historical record |
| 1964 · La Consuma Hillclimb | source_section_other_starters | - | F3 | — | Mario Casoni | De Sanctis Ford F3 | — | | WSPR historical record |