This course is like an ogre, uh onion, it has layers. An earlier review mentioned the schizophrenic nature of this course and it does ring a little true. To start with there are actually 3 parks, 2 club kiosks, 2 parking areas, and 5 different course configurations here along with 27 baskets and a multitude of tees. There is:
One ADA Compliant Wheel-Chair accessible 9 Hole Playing from East La Loma Park
One 18 Hole "Scenic" Course Playing from Scenic Dr. entrance to Pamela Monterosso Park.
One 27 Hole "white" Course Playing from East La Loma Park Parking Lot
One 27 Hole "white" Course playing from Scenic Dr. entrance to Pamela Monterosso Park.
One 18 Hole "Modesto 10,000" Gold Course Playing from East La Loma Park
The ADA compliant 9 hole is a small flat course on very hard compacted soil, that is said to be wheelchair accessible, I would tend to have my doubts. The holes are mostly wide open and short, too short to create any kind of challenge to anyone but a beginner.
The 18 hole scenic is a little more challenging with the creek coming in as obstacle on a few holes and a lot more trees making up fairways. The holes are still a little on the short side with this being more of an intermediate rec course. The hard compacted soil allows for easy skips and rollers, making for a fun throw.
The 27 hole courses are basically a compilation of the ADA and the scenic, and directions differ depending on where you start playing from East La loma you would play 1-8 of the ADA course and then walk past the basketball courts and playground and play 12-18, 1-11 of the "scenic" course and the return back across the courts over to the tennis court and play hole 9. Conversely if you were playing from Scenic Dr. you would play holes 1-11 and then walk past the courts to play hole 9, and then 1-8 of the ADA course before walking back to finish hole 12-18.
The 18 hole gold course referred to as the "Modesto 10,000" is also a combination of the two courses starting from La Loma parking lot. It is a Par 71 with 3 par 5's, 11 par 4's, and 4 par 3s. It is very much designed for competitive play, and this is where it excels.
All of this plays out in three different parks in the Dry Creek Regional Parkway, with the 5 mile Peggy Messinger trail winding its way through. The kiosk at scenic dr is actually in Pamela Monterosso Park, and when you cross the creek you are in Thousand Oaks Park and of course you then play down to East La Loma Park, which of course has its own kiosk. The parkway has restrooms and water fountains, along with playground, and basketball and tennis courts.

Flat. This whole piece of land is almost perfectly flat, with the creek canyon and small depression in the middle being the only elevation changes. One of the tees for the gold course uses a small hill to try and pick up about 15 foot elevation.
Gopher Holes. As others have mentioned there are holes everywhere out here, they are big and deep, and real ankle sprainers.
Navigation. Because there are so many courses and options to play those courses navigation gets a bit tricky. Most of the signs are the typical DGA fiberglass two sided signs that get broken. Although most of the left sides are intact, a lot of the rights are broken. Because the 27 hole courses vary depending on where you start it is difficult to know exactly where you are on the tee signs, although people have written numbers on them. Navigation for the 18 hole gold is even more difficult , the holes are marked by small 4X4 posts in the ground with a small metal plaque on them. The posts are only maybe a foot tall and difficult to spot. Most of the tees for the gold are the same as the other courses but a few are behind or pushed off uphills and have their own separate tees and these can be difficult to spot. One of these days I will map out the gold and post it under the links , or if someone beats me to it, I would welcome it.
Open. Although trees line the parkway they are the large 100 year oaks that tower above leaving most of the holes feeling fairly flat and open, especially with the short distances between holes and the relatively straight shots to baskets.
Multi-Use. This course plays on a narrow strip of land between houses and the creek with a multi-use trail running down most of the center of it, so you will often have to hold for bikers and joggers.
Baskets. No indicator to which basket you are throwing at.
Water Hazard. Creek is going to be a pro to some and a con to others.
Proximity to Houses. Fences can be a little to close to comfort on some holes.
Grass. Can get tall with foxtails, so be prepared with pants or gators.
Ugly. This courses scenic appeal has disappeared with the CA drought, leaving the area feeling dry , desolate, and arid even with a creek running right through it.

There is a lot here with a lot of options on how to play it. From beginner to pro you should find something for everyone to enjoy. Overall I find the course about average in quality of throwing. The 27 hole format is a very nice intermediate rec course, but I think the 18 hole gold during tournament play is where this course really is going to shine. While the other courses are two short and open this ones length and openness is just right.
Listed below is the specs for the gold "Modesto 10,000" course
Hole #1 to #2 basket A 470 Par 3 B 505 Par 4 C 583 Par 4
Hole #2 to #4 basket A 470 Par 3 B 500 Par 3 C 575 Par 3
Hole #3 to #5 basket A 315 Par 3 B 372 Par 3 C 485 Par 3
Hole #4 to #8 basket A 645 Par 4 --- ---- ------ C 685 Par 4
Hole #5 to #12 basket A 503 Par 4 B 510 Par 4 C 540 Par 4
Hole #6 to #13 basket A 275 Par 3 B 340 Par 3 C 388 Par 3
Hole #7 to #14 basket A 520 Par 4 B 560 Par 4 C 625 Par 4
Hole #8 to #15 basket A 585 Par 4
Hole #9 to #16 basket A 250 Par 3 B 270 Par 3 C 290 Par 3
Hole #10 to Practice basket for A to #18 basket for B and C
A 800 Par 5 B 823 Par 5 C 870 Par5
Hole #11 to #2 basket A 560 Par 4 --- ----- ------ C 590 Par 4
Hole #12 to #3 basket A 420 Par 3 --- ----- ------ C 535 Par 4
Hole #13 to #4 basket A 365 Par 3 B 390 Par 3 C 490 Par 4
Hole #14 to #5 basket A 280 Par 3 --- ---- ----- C 490 Par 3
Hole #15 to #7 basket A 740 Par 4 B 805 Par 5 C 855 Par 5
Hole #16 to #9 basket A 350 Par 3 B 700 Par 4 C 740 Par 4
Hole #17 to #11 basket A 730 Par 4 B 780 Par 5 C 910 Par 5
Hole #18 to Practice B A 413 Par 3

Lots of length. This course has plenty of room for you to throw, and requires you to do it on a consistent basis.

Fun terrain. Massive canyon throws on 2 and 16, and mostly flat ground with scattered tree obstacles elsewhere.

Very uncrowded. Those who play here are generally very courteous about playing through and such.

This course is starting to get some love from the local DG association. Helpful tee signs are in place, and some of the hole layouts have been tweaked and improved over the past year.

The out-and-back layout of the course makes navigation simple, and if you're in a time crunch it's easy to play a round of less than 18 holes.

A bit on the challenging side for beginners. A couple of holes cross a 200+ foot wide creek (or canyon, depending on the season), and the course as a whole is decently long.

Gigantic critter holes are all over the place. If you're not careful, you could easily end up with a twisted ankle.

The layout is confusing on occasion. There are a couple of pins that closely overlap each other, and one teepad is pointed 90 degrees away from the pin positions.

A lot of the holes play next to a walking path. However, the path isn't that crowded, and you can see people a long distance away, well before they're at risk of getting hit.

We looked at the front 9, and immediately turned around when we saw a very crowded field with scattered baskets (quick guesstimate: 1.5-2 disc rating.)

The back 18 are a totally different story. At the beginning and end, the course is technical and requires controlled shots to avoid losing a disc in the creek. In the middle, the course opens up and allows players to cut it loose and gun for the birdies.

Every time I visit, the condition and maintenance of the course seems to be improving. This is very encouraging!

I definitely recommend this course for locals or people passing through. We stop by this course a lot when we're on the road from Sacramento to LA and are very happy with it.

27 Holes!
Multiple Pin Placements
Great Tee Pads
Decent signage
Only crowded on beginner 8 holes
Water in play on several holes
Actually pretty hard place to lose discs. Even the water is slow and shallow (although reportedly toxic-but no rash on my legs yet)
Easy to find

Not a lot of shade, was a bit hot even in October
Probably be backed up on Beginner 8 in evenings and on weekend afternoons
Walking/biking path in play on most holes
Most of the birdie holes are bunched together
Pretty flat. Only elevation in play on the two holes that shoot across the creek.

Navigation- Start on hole 1 and play through hole 8. Can't get lost here. Then, after finishing 8, walk past the playground (keep going and going) until you see a basket and teepad 12. Yes, that's right, you go from 8 to 12. The second 18 is numbered separately from the front 9. You then play through to hole 18 and start again up the hill from 18 by the parking lot (no tee sign here and pad is hard to distinguish from sidewalk) at hole 1. You play back through hole 11, then walk a ways to the area behind the tennis courts you parked by and play hole 9 behind it. It plays fine once you know where you're going.

Get your birdies early here. Holes 1 through 8 are putter shots (one is 108 feet) or at most a mid. The crowds will ooh and ahh as you park shot after shot. Then you'll have to pull out the driver and try to keep it off the paths and out of the river (not easy when there's a 4 foot window between the tops of 25 foot bamboo plants and the bottoms of the canopy of the oaks). I ended up -5 after 8 holes, then managed (thanks to 3 penalty strokes) to shoot the last 19 holes at +6 for a total of +1 (922 rating.) Birdies are few and far between on the back 18.

I really like that the course can be a beginner course as well as an advanced course. And it's easy to play less than the full 27 since you basically play out and back. You could turn around anywhere you like and shorten it up.

Thanks Marcos and Jim for showing me around.

27 holes. ( Wide, open, long-bomb 9 hole on the front side. Semi-technical 18 hole in the back.)
Decent cement tee pads.
Great place to learn.
Most of the locals are very friendly and helpfull.
You can hear the ice cream truck from the front 9.
3 options for pin placements, but Im not sure how often they switch them up.

A lot of squirrel holes.
Hot in the summer time with not much shade on the top 9.
No elevation changes.
Missing signage on some of the holes toward the back.

I learned to throw on this course after getting a couple of discs from one of the locals, and Ive been hooked ever since. It was nice to learn the game on some wide open fairways, and not have to worry about losing your only driver. The bottom 9 is a great place to work on your drives with the short holes coming in at 200-250 feet. These are mostly open, with trees that wont cause you grief. The upper 18 holes are a bit tougher, with windows and lanes through the trees. There are two water crossings with small windows that offer no courtesy for errant shots.

I'll never complain about 27 holes! Flowed well, even though pretty crowded for midweek. A couple of very challenging holes (16 & 18 in particular). Very large park with plenty of space for us DGers. Disc Golf interest is alive and well in Modesto! Met an absolutely gorgeous jogger with 4 dogs who apparently frequents the park often ;p

Quite an uninspiring layout, especially the first 7 holes, but I guess it's safe. The course layout and sequence seem to be in limbo right now. All I know is, there's 27 baskets out there, so one way or another you'll get through them. There were quite many stickler bushes and weeds out there, so wear khakis or ankle guards! The "Scenic" course isn't really that scenic.

This place kinda reminded me of a much longer, and not quite as good Parque De La Raza in San Jose. Although decent, I can't see myself coming back again, tho.
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Uniqueness: B+ (27 holes; covers a lot of ground)
Difficulty: B+ (long; can get dense & narrow)
Fun factor: B (watch out for sticklies)
Aesthetics: B+ (nice variety of terrain; layout could be better)
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Overall: B+