EVOLUTION
1952-82
5.2 mile circuit
Green Park Chicane
1967
3625'
2318'
4705'
GREEN
PARK
2000'
PITS PITS
Control Tower
3890'
AIR
CONTROL
TOWER
WATER
TOWER
925'
Pits and
Start/Finish
for 1952 only
580'
1101'
3050'
North-South Runway
Webster Turn
1952-66
MG Bridge
1958-73
The
Esses
SPECTATOR
AREA
HANGER
SPECTATOR AREA
Hairpin Turn
MAIN GATE
TIMERS
Vehicle Bridge
1958-86
Vehicle Bridge
1965
Bridge
1955 PADDOCK AREA
Backstretch
Asphalt
Concrete
Airport
By-pass 1983-86
1983 4.75 miles
1984-86 4.86 miles
1400'
2245'
PITS PITS
Fangio Chicane
Modifed Hairpin
GREEN
PARK
58
3620'
2000'
925'
580'
1101'
3050'
North-South Runway
Paddock expanded in 1984,
moving the back straight out.
AIR
CONTROL
TOWER
HANGER
WATER
TOWER
OR
SPECTATCTT AREA
SPECTATOR AREA
Hairpin Turn
MAIN GATE
TIMERS
Vehicle Bridge
1958-86
Vehicle Bridge
1965
Control Tower
Bridge
1955 PADDOCK AREA
GREEN
PARK
The
Esses
3890'
Ulmann Straight
Asphalt
Concrete
1400'
1612
3050'
SPECTATOR AREA
MAIN GATE
Vehicle
Bridge
1991
Bridge
1986
1987-90
PITS PITS
Bridge
PADDOCK AREA
3082'
Ulmann Straight
Asphalt
Concrete
Gurney Bend
Le Mans
Curve
Carrousel
1987-1990
HOW THE CIRCUIT
HAS CHANGED
1952-82 (5.2 miles)
The first 30 years of the 12 Hours of Sebring were
held on the original 5.2 mile circuit which included
two long airport runways. The only major change in
the circuit during this period was the elimination of
the Webster Turn in 1967. It was replaced with the
Green Park Chicane.
1983 (4.75 miles)
A segment deleting part of the runway section altered
the course in 1983. The new section reduced
the length, bypassing a large portion of an active
airport runway.
1984-86 (4.86 miles)
The expansion of the paddock area increased the
course length slightly as the Ulmann Straight was
moved slightly south.
1987-90 (4.11 miles)
Sebring became a permanent year-round circuit after
massive changes. The north-south runway was
deleted, and a new asphalt course replaced the circuit
from turn one through the esses, which were
replaced by the carrousel.
1991-95 (3.70 miles)
A major improvement program began with widening,
resurfacing and rerouting of the track. Turns 8, 9
and the carrousel were deleted, placing a warehouse
building outside the circuit.
1996-97 (3.6 miles)
Following the 1995 race, the Fangio chicane was relocated
closer to the Hairpin, which shortened the
circuit slightly.
1997 (3.75 miles)
Following the 1997 race and before the October
FIA GT event, the entrance and exit of the Ulmann
straight were reconfigured, increasing the length of
the circuit slightly. The Ulmann straight was paved
with asphalt. Turn 17 was returned to its original
design after the FIA race.
1998-present (3.74 miles)
After the 1998 12 hour and before the September
IMSA event, the Hairpin configuration was changed
to create more safety run-off. A new pit lane was
added on the Ulmann Straight for the FIA WEC race
in 2019. A new vehicle bridge into Green Park was
constructed prior to the 2019 event.
1987 -2020
1987-90 4.11 miles
1991-97 3.70 miles
1998 3.75 miles
1999-20 3.74 miles