Twin Oaks Golf Course

Every green at Twin Oaks in San Marcos, California traced contour by contour, with fall lines, daily pins, and live wind in the GolfCore app.

GolfCore is not affiliated with or endorsed by Twin Oaks Golf Course.

The course map of Twin Oaks: fairways, tees, greens, bunkers and water traced hole by hole, the same map the app plays a round on.
  • 18Holes
  • 72Par
  • 8Rated tees
  • 18Greens mapped
  • 227Contours
  • 9.7%Steepest slope

About Twin Oaks

Twin Oaks Golf Course is an 18-hole golf course playing to par 72 in San Marcos, California. Ted Robinson designed it, and it opened in 1993. GolfCore has mapped 18 greens here with contour lines and fall-line arrows. The card below lists 8 rated tees with yardages for all 18 holes. GPS yardages and scoring are free in the GolfCore app.

Plan your visit

1425 North Twin Oaks Valley Road, San Marcos, CA

(760)944-1936

Green contour map of Twin Oaks in San Marcos, California: 227 elevation contours at a 3-inch interval with fall-line arrows, traced from 1-meter lidar
One of 18 mapped greens at Twin Oaks. Cool colors sit low and warm colors high; white lines are contours at a 3-inch interval, and the arrows point down the fall line.

How the greens break

GolfCore traced 18 greens at Twin Oaks from USGS 3DEP 1-meter lidar, with 227 elevation contours at a 3-inch interval. The steepest measured slope is 9.7 percent, and the largest rise across a single green is 5.5 ft.

In the app the same map sits under your ball on every green, with the fall line drawn to the hole and the wind modeled at your position. At clubs that run GolfCore, the pins the shop sets each morning show up there too.

Elevation: USGS 3D Elevation Program, U.S. Geological Survey, National Geospatial Program (public domain), processed by GolfCore.

The card

6,114 yds · Par 72 · Rating 70.0 · Slope 125

Hole 123456789 Out
Par 453454344 36
Yards 340470167349500332144317352 2,971
Hcp 1111395715173
Hole 101112131415161718 In
Par 344444535 36
Yards 177354336350365326538163534 3,143
Hcp 81018126142164

Total72 Yards6,114

Hole Par Yards Hcp
1 4 340 11
2 5 470 1
3 3 167 13
4 4 349 9
5 5 500 5
6 4 332 7
7 3 144 15
8 4 317 17
9 4 352 3
Out 36 2,971
10 3 177 8
11 4 354 10
12 4 336 18
13 4 350 12
14 4 365 6
15 4 326 14
16 5 538 2
17 3 163 16
18 5 534 4
In 36 3,143
Total 72 6,114

Course rating and slope

TeeYardsParRating / Slope
Black/Blue 6,641 72 72.7 / 131 79.7 / 147 (W)
Blue 6,517 72 71.9 / 129 78.9 / 145 (W)
White 6,114 72 70.0 / 125
White 6,112 72 76.7 / 141 (W)
Red 5,388 72 66.3 / 116
Red 5,370 72 71.7 / 130 (W)

Hole data is what GolfCore holds for the course's layout. Picking a tee shows that tee's own yardages, pars and stroke indexes where the club has rated them. Spot a wrong par, yardage or stroke index? Report it from Map Settings in the app, or send us a correction.

Course details

Location
San Marcos, California, United States
Address
1425 North Twin Oaks Valley Road, San Marcos, CA
Website
jcgolf.com
Architect
Ted Robinson
Opened
1993
Holes
18
Par
72
Tees on the card
8, 8 USGA-rated
Greens mapped
18
Elevation contours
227
Contour interval
3-inch
Largest green elevation span
5.5 ft
Steepest measured slope
9.7%
Course map
Traced hole by hole
Wind modeling
Live wind grid, 16 directions
Tree canopy
1-meter canopy height model
Course data updated
2026-11-10

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Staff at Twin Oaks can claim this course by signing in with an email address at the club's own domain, then edit its address, phone, website and crest at no charge. Read how a club keeps its course right. The same system runs a club's tee sheet and caddie yard; read how caddie management on GolfCore works.

GolfCore maps courses from public elevation data and is not affiliated with or endorsed by Twin Oaks.