How far is the San Luis Rey River Trail from your front door if you live near College Boulevard? The usual picture puts it at the harbor: Neptune Way, a couple of blocks from the sand, nine paved miles running inland. The city's own mile markers tell it differently. The College Boulevard trailhead at Mance Buchanon Park is mile 7.2 of a trail the city measures at about 9 miles, so from that parking lot the eastern end is 1.8 miles away and the harbor is 7.2 miles away.
This fall, that inland end has a newly opened bridge path, a historic mission with a coffee counter, a regional park reached through an underpass, and a short run of free events. Together they make the trail's last two miles a complete outing for people who live on this side of Oceanside.
What opened on Aug. 31, and what's still on hold
The City of Oceanside's College Bridge updates give the date. On Aug. 31, 2026, the south side of the College Boulevard bridge over the San Luis Rey River opened for public use. Some improvements were still unfinished, but the city said enough progress had been made to open it safely. The city's Aug. 27 update said the work would open "a full, off-road path for pedestrians and cyclists on the south side."
The north side is waiting on Washington. Construction there can't resume until the U.S. Army Corps of Engineers finishes a levee study and issues a Section 408 permit. The city still lists December 2026 as the expected completion date for the whole bridge. That date depends on the federal permit, and the project has already slipped several times because of utility coordination, utility relocations and federal permitting.
When it's finished, the bridge will be noticeably bigger. The plan widens it from two travel lanes in each direction to three and adds cantilevered sidewalks on both sides for people on foot and on bikes. Lennar is privately funding and managing the work as a required infrastructure improvement for its North River Farms development. North River Farms already has its own fire station: Times of San Diego reported in December 2025 that Lennar built and funded Fire Station 9 at 5590 Giovanni Way.
So through at least the end of the year, people crossing the river on foot or by bike at College Boulevard have one finished side and one side still under construction.
Mile 7.2 is the inland trailhead
The city's bike trails page lists numbered access points along the river. For this part of town, the most useful one is Access 7, College Boulevard/Mance Buchanon Park. The city places the entrance right after you turn onto College Boulevard from North River Road. Facilities include a parking lot, restrooms, picnic tables and water fountains.
| Point on the trail | Mile marker | What the city lists |
|---|---|---|
| Neptune Way, west end | 0.0 | Official start, street parking |
| Access 6, Douglas Drive | 5.4 | Parking lot and east entrance closed for construction; trail reachable from the west/northbound side of Douglas |
| Access 7, College Blvd./Mance Buchanon Park | 7.2 | Parking, restrooms, picnic tables, water fountains |
| N. Santa Fe Ave./SR-76, east end | about 9 | Parking area; connection toward Guajome |
The two inland access points are 1.8 miles apart, the same distance as College Boulevard to the eastern end. The Douglas Drive closure notice on the city page has no date, so check its status before counting on that lot. Distances also vary a little by source. TrailLink uses the same two endpoints but lists the trail at 9.5 miles and puts the western end two blocks from the beach.
The city hasn't said whether the new south-side bridge path connects directly onto the trail with signage. For now, the Mance Buchanon lot is the documented way in.
The short end of the trail runs east, toward Guajome
From Mance Buchanon Park, the 1.8 paved miles east end at the N. Santa Fe Avenue/SR-76 parking area. TrailLink describes a way to keep going from there: follow the dirt path along the north side of Highway 76, then take an underpass into Guajome Regional Park.
San Diego County Parks lists Guajome at 3000 Guajome Lake Road, open for day use from 9:30 a.m. to sunset every day, with its own walking and biking trails. That makes Guajome a realistic weekend-morning turnaround from College Boulevard. Starting before 9:30 means arriving before the gates open, and in late fall the sunset closing comes earlier each week.
The river corridor itself goes through a seasonal change in these months. The city's San Luis Rey River flood control page describes yearly vegetation work in the channel that starts after Sept. 15 and runs through mid-November. The page doesn't mention any trail closure tied to that work.
The Mission and the Marketplace sit on either side of the trailhead
Mance Buchanon Park is at 425 College Blvd. Mission Marketplace is a short way along College at 471 College Blvd., where College meets Highway 76. Mission San Luis Rey is at 4050 Mission Ave. Between them they cover the before-and-after of a trail outing.
Mission San Luis Rey's visitor information was updated Oct. 5. Current hours:
- Coffee Shop: 9 a.m. to 3 p.m. daily, opening at 8 a.m. on Sundays
- Museum: 10 a.m. to 4 p.m. daily. Admission is $8 for adults, $5 for seniors and ages 6 to 18, and free for children 5 and under and for active military and their dependents. Visitors using SNAP EBT pay $3 under Museums for All, and an audio tour is $3.
- Gift Shop: 10 a.m. to 5 p.m. daily
- Holiday closures: the museum, gift shop and coffee shop close on New Year's Day, Good Friday, Easter, Thanksgiving and Christmas Day
The Mission has plenty of daytime parking, and dogs are welcome on a leash everywhere except the Historic Church and the cemetery grounds. The church is also open to visitors from 8 a.m. to 4 p.m. Monday through Saturday and from 7 a.m. to 4 p.m. on Sunday, according to the Mission's site.
At Mission Marketplace, the center's dining directory lists Chipotle, Crumbl Cookies, El Pollo Loco, McDonald's, Ohana Hawaiian BBQ, PanPan Wok, Subway and Victoria's Mexican Food. Two of them stand out for trail hours. Victoria's Mexican Food lists 6 a.m. to 11 p.m. daily, which covers an early start and a late finish. Ohana Hawaiian BBQ lists 11 a.m. to 8:30 p.m. daily.
The fall dates near the inland trailhead, in order
Most of the inland calendar for the next eight weeks is at the same few addresses described above.
- Through Nov. 1: Socks, beanies and scarves. Mission San Luis Rey's 800 Socks, Beanies & Scarves drive started Oct. 3 and collects donations for distribution through Humanity Showers.
- Friday, Oct. 9: Combined choir concert. Mission San Luis Rey Parish lists a Combined Choir Concert and prayer service. The listing gives no start time.
- Saturday, Oct. 17, 2 to 5 p.m.: Trunk or Treat at the trailhead. Oceanside Parks & Recreation's free Halloween Spooktacular: Trunk or Treat takes place at Mance Buchanon Park, 425 College Blvd., the same park as trail Access 7. Planned activities include trick-or-treating, games, inflatables and food vendors.
- Friday, Nov. 13: Evening With the Friars 2026. This one is also on the parish calendar, also without a listed time.
- Saturday, Nov. 28: Green Friday at Guajome. County Parks' 2026 volunteer schedule lists Green Friday activities at Guajome Regional Park. The county's Green Friday page says dates, times and project descriptions are still to come.
The Oct. 17 event also tests the trailhead lot. A free afternoon event at Mance Buchanon Park will compete for the same parking spaces trail users depend on. Arriving on foot or by bike, including over the new south-side bridge path, avoids that problem.
The roadwork on the way in
Parts of the drive to these stops are in a paving cycle this fall. Oceanside's pavement program notice includes Oceanside Boulevard at College Boulevard and Mission Avenue at Mesa Drive and Mission Gate. ADA ramp and curb work was scheduled to begin the week of Aug. 17, and asphalt work was set to start in October. The notice gives no completion date. If you drive to the Mission this month, Mission Avenue at Mesa Drive is one of the listed segments.
On the bridge, the next update depends on when the Army Corps issues the Section 408 permit. Until then, the south side is the off-road way across the river at College Boulevard, and the city's estimate for finishing the north side and the widening to three lanes each way is still December 2026.
At Crown & Coast Properties, we pay attention to changes like the College Bridge because they affect how a neighborhood works day to day: where you can walk, which parking lot fills up first, which errand is now a bike ride. If you live in east Oceanside and want to talk through how projects like this affect your home, book a consultation and we'll go through it with you.
