I have ridden this trail many times and would recommend it to just about any level of rider. From Castroville to Carmel, it just keeps getting better. I would recommend to return from Carmel by going over the hill into Monterey on any number of routes. Veterans Memorial Park at the top of the hill gives riders the opportunity to ride into Historic Monterey. Also, there's great restaurants and brew pubs to be found. The Monterey-Salinas Transit hub is there for those that want to take mass transit rather than continue pedaling.
A alternative route going "over the hill" to Monterey would be going up (north) from Carmel Village, to Highway 1 then making a left turn to continue north for less than a mile, then exiting Highway 1 at Aguajito Road. Continue past Aguajito back toward a bridge crossing of Highway 1 and you'll see a bike trail just before you cross the bridge. Take that trail downhill to enter Monterey from the east.
I just noticed another post lamenting that the rider had to drive to the start in Castroville. No, it's not necessary to drive to the start as Monterey-Salinas Transit has excellent routes and will take your bikes onboard if the racks are already taken. Also, same reviewer criticized a area that's not on the trail at all when mentioning Highway 1 north of Moss Landing and the road construction there. That construction was for PG&E gas lines and was completed as of 9/23/21. The road shoulder of Highway 1 is returned, and it's not necessary to "share the lane" with motor vehicles along that section any longer.

There is a very short section of bike path from Castroville going to the first highway at which point one is on country roads with heavy trucks and speeding vehicles until one gets to the edge of the city of Marina. From there one crosses multiple intersections until out of the city.

Lots of pedestrians and small children loosely supervised if at all so need to be cautious where sight distances are reduced. Worst once on gets into the city of Monterey. It is not difficult to continue to Pebble Beach and with all the ultra rich having multiple home in this community, road traffic is largely non existant if not on the marked 17-mile drive section.

Getting to Castroville safely requires the use of a personal car. Caltrans periodically sets up construction on Highway 1 from north of Moss Landing and through to Castroville. Often there is only a single lane for bicyclists and cars and heavy trucks with trailers to use and the odds of being hit and killed is very very high as this is the busiest two lane highway in the United States. The section of Hwy 1 through Moss Landing has been very dangerous thanks to the state road work for the past 45 years and nothing has changed and it is as dangerous now as ever.

I have ridden this trail three times. Each time has been a great experience! This afternoon, I stopped in at coyote creek golf course for lunch and it was great! I enjoy watching the r/c airplanes and love going to Anderson reservoir at the end. It’s a great ride and can’t wait for winter!

Starts at golf course, and parallel's the ocean (which is not visible much) and passes the old Asilomar train station, which has an explanatory plaque. Dirt trail with some bits of concrete trail (by the golf course) and has a great public restroom near the top of the trail (again at the golf course.

You cross a few roads, but the traffic is very light, but the cars are not expecting anyone to come out so take care at these points. We were the only riders, and saw probably 4 other people total as we went from one end to the other and back again. Very enjoyable experience.

We are a couple in our late 50s with road bikes. Scenic ride on paved bike trail separated from traffic. Variety of hills and level areas, windy cool weather, glad to have several layers, full gloves and headband to cover ears. We parked at Fort Ord Dunes State Park, Marina, CA. It has free parking and port-a-potty. Start on the Beach Range Road toward Monterey (a no vehicle road that runs next to bike trail). It ends and turns into the bike trail. Good trail signage, just know to make a Right hairpin turn under the freeway interchange. Good public restroom stop on right near London Bridge Pub, just past Monterey Kayaks. Beaches and picnic spots along the route. Continue to Lovers Point. The return trip is hilly towards the end, but great cardio training. Out and back was 20.5 miles and took about 3 hours of riding (Note: I averaged 7 mph with loaded panniers, my ultra fit husband could ride it much faster). We took a total of 4 hours with stops for snacks.

Enjoyed this ride and chose to go back through the state park which has some challenging hills. The ocean views were amazing!!!

My husband and I biked from MetCalf Park going south to the end of the trail by Morgan Hill, it’s about 10 miles each way. We enjoyed the ride very much because it is easy, less crowded, beautiful scenery and nó homeless.

Fairly easy to get a parking spot in the parking lot and miles and miles of paved trails with many sandy side trails. Beautiful views of the ocean and surrounding lands.

Went this past weekend and it was amazing . Loved the cannery and fisherman’s wharf area and the whole ride was amazing. Will definitely do again .