Track guide · Preview · 3 of 11 corners open

Harris Hill Raceway

San Marcos, Texas · 2.92 km · 1.82 mi · clockwise

Harris Hill Raceway in San Marcos, Texas is modeled here in its Clockwise layout: 2,922 m (1.82 mi) of centerline through eleven numbered corners — four lefts and seven rights — climbing a total of 26 m (85 ft) per lap. Every speed, distance and lap time on this page is a physics-simulation estimate from track geometry, not measured data. The profile is fast at both ends: Turn 1 is entered at 182 km/h (113 mph), Turn 6 at 180 km/h (112 mph), and Turn 11 exits at 176 km/h (110 mph). The slow points are Turn 10, a 37.4 m-radius right at 75 km/h (47 mph), and Santa Rita (Turn 4) at 79 km/h (49 mph). Simulated laps: 1:16.4 liter bike, 1:16.7 supersport 600, 1:18.2 middleweight twin.

All figures: physics-simulation estimates · generated 2026-10-02 · methodology & assumptions

COMPUTED LINE · HARRIS HILL RACEWAY SIM
Harris Hill Raceway track map with computed racing line
1.82 MI
Lap
11
Corners
85 FT
Climb

Track outline © OpenStreetMap contributors (ODbL)

Harris Hill Raceway — quick facts

Motorcycle track guide · simulation estimates · 2026-10-02

  • Layout: Clockwise — 2,922 m (1.82 mi) in the track model, 11 numbered corners: 4 left, 7 right
  • Simulated lap estimates: 1:16.4 liter bike / 1:16.7 supersport 600 / 1:18.2 middleweight twin
  • Simulated average speed: 132–135 km/h (82–84 mph) depending on bike class
  • Slowest simulated point: Turn 10 at a 75 km/h (47 mph) minimum; tightest radius on the card at 37.4 m
  • Fastest simulated entry: Turn 1 at 182 km/h (113 mph) in every class, Turn 6 close behind at 180 km/h (112 mph)
  • Longest simulated brake zone: 123 m before Turn 4 (Santa Rita) on the liter bike, 117 m on the 600
  • Biggest descent: Turn 5 drops 7.2 m (24 ft); biggest climb: Turn 10 rises 3.2 m (10 ft)
  • Longest corner on the card: Turn 8 at 231 m of left-hand arc

Turn 1

Left114 m arc
EntryMinExitBrake startEff. radiusElev Δ
182 km/h113 mph167 km/h104 mph173 km/h108 mph24 m79 ft184 m603 ft+1.9 m+6 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 2

Right117 m arc
EntryMinExitBrake startEff. radiusElev Δ
117 km/h73 mph98 km/h61 mph121 km/h75 mph69 m226 ft63 m207 ft-1.2 m-4 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

Turn 2 is the first real braking event: a 117 m right with a 63.2 m effective radius, falling 1.2 m (4 ft). From 117 km/h (73 mph) on entry, the simulation brakes 69 m out on the supersport 600, 72 m on the liter bike and 63 m on the twin, down to a 98 km/h (61 mph) minimum that is identical across classes. The exit is 121 km/h (75 mph) in every class. The number to note is what follows: the exit speed here is close to the entry speed for Turn 3, which the model treats as the second half of the same right-hand arc.

Turn 3

Right81 m arc
EntryMinExitBrake startEff. radiusElev Δ
119 km/h74 mph119 km/h74 mph163 km/h102 mph51 m167 ft113 m372 ft-0.5 m-2 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 4 — Santa Rita

Right156 m arc
EntryMinExitBrake startEff. radiusElev Δ
97 km/h60 mph79 km/h49 mph116 km/h72 mph117 m384 ft42 m136 ft+0.2 m+1 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

Santa Rita is a 156 m right of 41.5 m effective radius, level to within 0.2 m, and it carries the longest braking zone on the circuit. The simulation arrives at 97 km/h (60 mph), the lowest entry speed on the course, with the marker 117 m out on the supersport 600, 123 m on the liter bike and 90 m on the twin, and bottoms at 79 km/h (49 mph) for every class — the second-slowest point of the lap. The exit is 116 km/h (72 mph) on the 600, 117 km/h (72 mph) on the liter bike and 115 km/h (71 mph) on the twin, a solid gain over the entry across the long arc.

Turn 5

Left171 m arc
EntryMinExitBrake startEff. radiusElev Δ
107 km/h67 mph87 km/h54 mph141 km/h88 mph21 m69 ft50 m163 ft-7.2 m-24 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 6

Right114 m arc
EntryMinExitBrake startEff. radiusElev Δ
180 km/h112 mph167 km/h104 mph170 km/h106 mph39 m128 ft183 m600 ft-1.2 m-4 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 7

Right180 m arc
EntryMinExitBrake startEff. radiusElev Δ
106 km/h66 mph81 km/h51 mph138 km/h86 mph72 m236 ft44 m143 ft-3.5 m-11 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

Turn 7 is the third-tightest corner on the card: 180 m of right-hand arc at a 43.6 m effective radius, falling 3.5 m (11 ft), the second-biggest descent on the lap. The simulation brakes from 106 km/h (66 mph) — 72 m out on the supersport 600, 75 m on the liter bike, 66 m on the twin — to an 81 km/h (51 mph) minimum shared by every class. The exit builds to 138 km/h (86 mph) on the two larger bikes and 135 km/h (84 mph) on the twin, helped by the descent, the biggest gain between minimum and exit anywhere on the course, and it feeds directly into the long left at Turn 8.

Turn 8

Left231 m arc
EntryMinExitBrake startEff. radiusElev Δ
150 km/h93 mph119 km/h74 mph151 km/h94 mph27 m89 ft93 m306 ft+2.8 m+9 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 9

Right111 m arc
EntryMinExitBrake startEff. radiusElev Δ
162 km/h101 mph152 km/h95 mph159 km/h99 mph33 m108 ft153 m501 ft-0.2 m-1 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 10

Right159 m arc
EntryMinExitBrake startEff. radiusElev Δ
101 km/h63 mph75 km/h47 mph124 km/h77 mph60 m197 ft37 m123 ft+3.2 m+10 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 11

Left186 m arc
EntryMinExitBrake startEff. radiusElev Δ
162 km/h100 mph153 km/h95 mph176 km/h110 mph3 m10 ft154 m506 ft-0.4 m-1 ft

Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed

This corner's walkthrough is in the all-access pack — along with the other 7 locked corners on this track.

Unlock every corner · $59 lifetime →