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As of round 17 Race · updated 10/13/2026, 07:18 PM (Japan time)

Riders

Jack Ahearn

No freely licensed photo found, so the race number and team colour are shown instead. About photos

Nationality
Australia Australia
Bike
Norton
Born
October 8, 1924(age 102)

Birth date and place from the official rider profile

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Career

Made a Grand Prix debut in 500cc at Nürburgring in 1955.

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In 500cc (1955): 1 starts, 0 wins, 0 podiums. In 350cc (1963): 2 starts, 0 wins, 0 podiums. In 125cc (1964): 1 starts, 0 wins, 0 podiums. In 500cc (1964): 4 starts, 0 wins, 2 podiums. In 350cc (1964): 1 starts, 0 wins, 0 podiums. In 500cc (1965–1966): 3 starts, 0 wins, 0 podiums. In 350cc (1966): 2 starts, 0 wins, 1 podiums.

First podium: Solitude 1964 (500cc).

In all, 14 Grand Prix starts, 0 wins and 3 podiums (within the official results database).

Written automatically from the official results database (no opinions about the rider)

Note: these totals are incomplete. The official data has no result for 5 races in seasons and classes this rider raced in; they are not counted: 1954 350cc (TT) / 1955 500cc (TT) / 1963 500cc (TT) / 1966 350cc (BEL) / 1966 500cc (TT)

Season by season

350cc500cc125cc ★ Champion

110203019541956195819601962196419661963 350cc: P12 / 4 pts / 0 wins1964 350cc: P22 / 1 pts / 0 wins1966 350cc: P9 / 8 pts / 0 wins350cc1955 500cc: P32 / 1 pts / 0 wins1963 500cc: P10 / 5 pts / 0 wins1964 500cc: P2 / 25 pts / 1 wins1965 500cc: P5 / 9 pts / 0 wins1966 500cc: P6 / 13 pts / 0 wins500cc

The strip shows each year's team (team colour). Tap for team and machine

Scope: official results DB, 1954–1966 (the rider's racing years); excludes 5 races with no official result data

Totals

125cc1964–1964
Win rate0.0%
Podium rate0.0%
Average finish (when classified)avg P8.0

0 pts · Poles 0

350cc1954–1966
Win rate0.0%
Podium rate12.5%
Average finish (when classified)avg P5.4

13 pts · Poles 0

3 of these races have no result in the official data; their results come from the Italian Wikipedia.

500cc1955–1966
Win rate4.5%
Podium rate31.8%
Average finish (when classified)avg P4.8

57 pts · Poles 0

14 of these races have no result in the official data; their results come from the Italian Wikipedia.

Points are counted per class, never added across classes. Tap a number for the list of races | Scope: official results DB, 1954–1966 (the rider's racing years); excludes 5 races with no official result data

Against the greats, and the class of their debut

Grand Prix debut in 1954. Of the 38 riders who debuted that year, 0 also raced in 2026.

Greats: 2+ world titles or 30+ MotoGP / 500cc wins. Up to 4 who shared 10+ races, most titles first. A finisher counts as ahead of a non-finisher.

Results by condition (races)

All classes 31 races · 125cc / 350cc / 500cc

By circuit (best average first)Small sample

In All classes, best at Imatra (average P2.7, 3 races)

Solitude500cc 1avg P2.0
Imatra500cc 2 · 350cc 1avg P2.7
Brno500cc 2avg P4.0
Monza350cc 2 · 500cc 2avg P4.5
Isle of Man350cc 2avg P4.5
Sachsenring500cc 3 · 350cc 1avg P4.8
Assen500cc 4 · 350cc 1avg P5.0
Spa350cc 1 · 500cc 4avg P6.0
Nürburgring500cc 1avg P6.0
Ulster500cc 2avg P7.5
Hockenheim500cc 1avg P8.0
Clermont-Ferrand125cc 1avg P8.0

Average finish across classes (Moto3, Moto2, MotoGP and so on together). See each class below for class-only figures. Only circuits with 3+ races count as a best track.

350cc 8 races · 1954–1966

By tyre eraSmall sample

Win rate
Podium rate
Average finish (when classified)

By circuit (best average first)Small sample

Imatra1 racesavg P3.0
Isle of Man2 racesavg P4.5
Assen1 racesavg P5.0
Monza2 racesavg P6.0
Sachsenring1 racesavg P6.0
Spa1 racesavg P9.0

350cc: no track-condition records; no grid records.

500cc 22 races · 1955–1966

By circuit (best average first)Small sample

In 500cc, best at Sachsenring (average P4.3, 3 races)

Solitude1 racesavg P2.0
Imatra2 racesavg P2.5
Monza2 racesavg P3.0
Brno2 racesavg P4.0
Sachsenring3 racesavg P4.3
Assen4 racesavg P5.0
Spa4 racesavg P5.3
Nürburgring1 racesavg P6.0
Ulster2 racesavg P7.5
Hockenheim1 racesavg P8.0

500cc: all in the Multiple suppliers era; no track-condition records; no grid records.

125cc 1 races · 1964

125cc: all in the Multiple suppliers era; no track-condition records; no grid records; one circuit only.

Fewer than 30 races: small sample (dashed). Average finish counts classified finishes only | Scope: official results DB, 1954–1966 (the rider's racing years); excludes 5 races with no official result data

Every race

70.6%Start rate (12/17)
2Longest run of absences (races)
8Longest run of starts (races)
6Estimated points lost to absences
1Win3Podium8Points18No pointsRRetired–Absent
1964 500cc P2 · 25 pts

1965 no Grand Prix starts

1966 500cc P6 · 13 pts

Tap a cell for the event, qualifying, sprint and race results and points

? How the estimate is made

Estimate = average of the last 3 races before each absence

Seasons in which at least half of the races were started | Scope: official results DB, 1954–1966 (the rider's racing years); excludes 5 races with no official result data

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