Muir Beach Trail Run 
11 Km, 17 Km, 33 Km & 50 Km
Run-day Instructions


The Muir Beach Trail Run will start at 8:30 a.m. on Saturday, October 3rd at Muir Beach. 


Parking is limited at Muir Beach.  We encourage you to carpool with other runners.  Vehicles with 2 or more participants will park at the Muir Beach parking lot.  All others will be directed to park 1/2 mile from the start along Muir Woods Road.  Click on the blue icon for driving directions:


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Weather:  Muir Beach/Sausalito



The course will be marked with ribbon approximately every 200 meters and color coded as follows:

11 Km - Orange

17 Km - Orange, Yellow Loop, Orange

33 Km - Orange, Pink Loop, Orange

50 Km - 33 Km + 17 Km

The most important course marking is the striped ribbon.  It indicates a turn at an intersection.  There will be at least two striped ribbons before a turn in the course.  The striped ribbons will be placed before and on the same side as the required turn.  As you approach an intersection, look for any striped ribbons before the turn.  Waiting until you're in the intersection to determine the correct direction may be confusing and you may go the wrong way.  After you complete the turn, there will be orange, yellow, or pink ribbons indicating the correct route. 


If you don't see your respective ribbon for 3-4 minutes, you are off course.  If you get off course, you should retrace your path until you find where you left the course and then continue along the marked course.

Please be courteous on the trail. If you're passing another runner or hiker, announce "on your left" as you approach.

Headphones are allowed on dirt road sections only. Please do not wear headphones on single-track trail, while crossing paved roads, when getting aid at aid stations, or while crossing the finish line.

Your bib number indicates the distance that you're running. If you want to change your distance, please send us an e-mail  or let us know by check-in, at the latest.

Many of the parks in California have poison oak.  We recommend staying on the trail and washing with Tecnu after your trail run.  Occasionally, bees or yellow jackets may be active and precautions should be taken if you're allergic.

No dogs allowed on the course. Please don't leave pets in your vehicle.

            11 Km - 1,900'

            17 Km - 2,740'

            33 Km - 4,390'

            50 Km - 7,130'

                (Elevation changes determined using an Avocet altimeter.)


Aid Stations

Fully-stocked aid stations every 5 -12 kilometers.  You can expect fresh fruit, salty snacks, assorted candy, boiled potatoes & salt, water, and Clif Shot Electrolyte sports drink. If you would like to be sure that you have Clif product, SaltStick capsules, or any other specific item at the event, you should carry it with you. Additionally, it is highly recommended that runners carry at least 20 oz. of water between aid stations.


   11 Km

Distance (Km)

Next Aid

1. Tennessee Valley 6.2 4.7
2. Muir Beach (Finish) 10.9  


   17 Km

Distance (Km) Next Aid
1. Tennessee Valley 6.2 6.0
2. Tennessee Valley 12.2 4.7
3. Muir Beach (Finish) 16.9  


33 Km

Distance (Km) Next Aid
1. Tennessee Valley 6.2 12.4
2. Bonita Cove 18.6 9.7
3. Tennessee Valley 28.3 4.7
4. Muir Beach (Finish) 33.0  


50 Km

Distance (Km) Next Aid Cut-off
1. Tennessee Valley 6.2 12.4  
2. Bonita Cove 18.6 9.7  
3. Tennessee Valley 28.3 4.7  
4. Muir Beach (Start/Finish) 33.0 6.2 2:30 p.m.
5. Tennessee Valley 39.3 6.0  
6. Tennessee Valley 45.3 4.7  
7. Muir Beach (Finish) 50.0   5:30 p.m.


Post-Run Activities

There will be hot soup and chili at the finish line.

T-shirts will be given to all pre-registered runners. While awards are given to the first female and male finishers, PCTR events are designed to encourage the enjoyment of trail running and emphasize personal achievement. All 50 Km finishers will receive a custom coaster for the event. 


PCTR Race Series 

Participants are automatically included in the race series and points are awarded to the first 8 finishers in each age group.  To learn more, please click:  PCTR Race Series


Message Board

Please post messages regarding places to eat or stay, sharing rides with fellow runners, etc. on the:  PCTR Message Board


Check In

Please arrive by 8:15 a.m. on Saturday to check in and receive your bib number.    

Pacific Coast Trail Runs
[email protected]

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