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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.

Open Twin Oaks in GolfCore

Plan your visit

1425 North Twin Oaks Valley Road, San Marcos, CA

Check visitor access, current green fees and tee-time availability directly with the course before travelling.

Course website & booking information Call (760)944-1936 Get directions
Twin Oaks drawn from GolfCore's traced course vectors — fairways, tees, greens, bunkers and water, in the app's own colors. This is the same geometry the app maps a round on.
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19Greens Mapped 238Elevation Contours 9.7%Steepest Slope 18Holes 72Par 8Rated Tees
Green contour map of Twin Oaks in San Marcos, California — 238 elevation contours at a 3-inch interval with fall-line arrows, traced from 1-meter lidar
One of 19 mapped greens at Twin Oaks, drawn from GolfCore's contour data baked from USGS 3DEP 1-meter lidar, in the same colors the app uses. Elevation bands run cool-low to warm-high; white lines are contours at a 3-inch interval, and dark arrows point down the fall line.

The course, by the numbers

LocationSan Marcos, California, United States
Address1425 North Twin Oaks Valley Road, San Marcos, CA
Phone(760)944-1936
Websitejcgolf.com
Holes18
Par72
Tees on the card8, 8 USGA-rated
Greens mapped19
Elevation contours238
Contour interval3-inch
Largest green elevation span5.5 ft
Steepest measured slope9.7%
Course mapTraced hole by hole
Wind modelingLive wind grid, 16 directions
Tree canopy1-meter canopy height model
Course data updated2026-08-04

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 177354336350365326538163538 3,147
Hcp 81018126142164

Total72 Yards6,118

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 5 538 4
In 36 3,147
Total 72 6,118

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. Clubs correct their own data in the app.

What GolfCore has for Twin Oaks

GolfCore's library covers Twin Oaks Golf Course green by green: 19 putting surfaces traced with 238 elevation contours from USGS 3DEP 1-meter lidar. The steepest measured slope on these greens tilts at 9.7 percent — the difference between a putt that dies at the hole and one that runs four feet past.

In the app, players and caddies read the same data live on the course: contour bands with fall-line arrows, wind simulated at the player's position, and pin positions that clubs on GolfCore set each morning. Twin Oaks Golf Course is one of more than fourteen thousand courses GolfCore has mapped green by green.

For clubs, the same system runs the tee sheet and the caddie yard — assignments off real tee times, SMS confirmations, and a caddie network that spans every club on the platform. Read how caddie management on GolfCore works.

More courses nearby

Approximate straight-line distances from Twin Oaks Golf Course. Driving distances and travel times will vary.

Staff at Twin Oaks can claim this course by signing in with an email address at the club's own domain. That sets the club up on GolfCore with you as an administrator.

Open this course in GolfCore Caddie Management

GolfCore maps courses from public elevation data and is not affiliated with or endorsed by Twin Oaks. Represent this club? Request changes or removal through our contact page.