The San Francisco Ultramarathon

Starts Saturday, July 24th, 2021 @ 11pm

Race Start
First Loop – Saturday 11:00 pm @ Mission Street and The Embarcadero San Francisco, California 94105

Race Finish
Main Full Marathon Finish Line Folsom Street @ The Embarcadero, San Francisco, California 94105

Course Highlights
Run the San Francisco Marathon back-to-back in this epic fundraising event.

Course Certification
The Second Loop (San Francisco Marathon Full Marathon) is USATF Certified. Earn both the Ultra-marathon and Full Marathon Medal.

Race Distance
52.4 Miles

In-person $349
Virtual domestic $149
Virtual international $169


2021 Course Maps

(courses subject to change)

Ultra Marathon: Lap 1


Ultra Marathon: Lap 2



Runner Perks

Long-Sleeve Technical T-Shirt

Finisher Medal

Food & Drink

Race Analytics from

Options to Run!

Run our Ultra Course 3 ways: solo, as a 2 person team or a 4 person team…here’s how it works:

Solo – Run 52.4 Beautiful Miles through the streets of San Francisco. Run the first loop beginning at 11pm, then join the other runners for the second loop – earliest start time for second loop will be 5:30am.

Two Person Team – Each team members runs a Full Marathon, first member runs the loop beginning at 11pm, second member runs the second loop beginning after first member returns (earliest possible start time is 5:30am).

Four Person Team – Each member runs a Half Marathon, First loop is run by two members handing off at the halfway point (shuttle to handoff and shuttle back to start provided).  New two members run the 1st and 2nd half Marathons.  One of the Second loop team members will run our Official 1st Half Marathon beginning on the Embarcadero and one will run our Official 2nd Half Marathon, beginning in Golden Gate Park.

If you have any questions, please contact us at:


    Ultramarathon Details

  • Start Info
  • The Course

    The Ultramarathon First Loop (First 26.2 Miles)

    Ultramarathon participants will begin on The Embarcadero and run The Official San Francisco FULL Marathon course in reverse: under the Bay Bridge and around the Giant’s Ballpark, through Mission Bay, Potrero and Mission Districts, up Haight Street and into Golden Gate Park. Ultramarathon participants will head down to the ocean and run along the Great Highway before coming back into Golden Gate Park and then up into The Presidio. From there, 52.4 participants will head through the Marina, Fisherman’s Wharf and back to the Main Start on The Embarcadero where 18,000 runners will be waiting to join you on the second leg of your 52.4 mile adventure!

    The first loop of the Ultramarathon is NOT a closed course. Participants need to stay on sidewalks and to the side of the road.

    100% of the course is on paved roads. Maps and directions will be provided to each 52.4 participant for the first loop.

    The Ultramarathon Second Loop: The Official San Francisco FULL Marathon (Second 26.2 Miles)

    The Second Loop: The San Francisco Marathon is a loop course, taking runners on a journey around the city, hitting gorgeous locales and iconic landmarks all along the way. Starting at the world famous Ferry Building, racers head along the Embarcadero, with the beautiful San Francisco bay on their right. From there they pass through Fisherman’s Wharf and through the Marina. Next runners head up and back across the Golden Gate Bridge and down through the Presidio, along the Pacific Ocean. A tour of the beautiful Golden Gate Park follows, and after some turns and curves through the trees and around the lakes, runners empty out onto the historic and very colorful Haight street. The course takes some loops through the Mission, Potrero, and Mission Bay Districts, heads by numerous charming little parks, then heads up towards AT&T Park, home of the San Francisco Giants. And then it’s just a home stretch, under the fancy new Bay Bridge and back up to the Ferry Building.

  • Course Limits

    52.4 participants must complete the first loop before the last wave of the Full Marathon begins (6:32 am). In order to qualify as an Official 52.4 Ultra Marathon Finisher and San Francisco Marathon Official Finisher, you must finish the second loop within 6 hours. After the final wave start, 52.4 participants must maintain a 13:45 minute per mile pace as The Official San Francisco Marathon course will be closed on a mile-by-mile rolling basis.

    If you are unable to run within the allotted time for the first loop, you may not be able to start the second loop (The Official San Francisco FULL Marathon). If you don’t run the allotted time for the second loop, you will be asked to move onto the sidewalk. Once you are on the sidewalk, you must follow all traffic laws deemed by the City and County of San Francisco. The course will be re-opened to traffic and aid stations may be closed if you fall behind the 6 hour course limit.

    Starting Times:

    First Loop: 11:00pm

    Second Loop: 5:40am – 6:32am

  • Water Stops, Aid Stations and Course Support

    The San Francisco Marathon will provide on course support via course monitors in cars and on bicycles that will travel the first loop with the 52.4 participants, stopping at designated areas along the route and checking runners in at each stop. Aid stations will support 52.4 participants during the first loop only. Volunteer Teams will be assigned to the aid stations and will be equipped with first aid supplies, water, fuel and food.

    All 52.4 participants have the option of providing The San Francisco Marathon with a drop bag of their own food and supplies. 52.4 participants will be able to drop off their bag at the Ultramarathon Tent at check-in on race day.

    The participant’s drop bag will be left at the 52.4 Tent. Ultramarathon participants will have access to their drop bag between the first and second loop and after the second loop.

    Drop bags should be securely tied and clearly marked with the the Ultramarathon participant’s name, bib number and phone number. Do not leave valuables in your bags. The San Francisco Marathon cannot be held responsible for lost bags. Please do not use paper bags, shoe boxes, or anything that can get wet and tear easily.

    52.4 participants must pick up their drop bag after their second loop by 1pm. Bags not picked up or claimed within 72 hours of the event are donated to local charity.

    Designated aid stations in the First Loop:

    • Mile 7.5 (just entering Golden Gate Park) – next station is in 6 miles
    • Mile 14 station (along the Great Highway) – next station in 7 miles
    • Mile 20.5 station (Stilwell Hall) – next station in 6.2 miles
    • Mile 26.2 station – Check in Area

    For the second loop, Ultramarathon participants will utilize the official race water stops.

  • Elevation

    First Loop:

    Second Loop: (Same as the Full Marathon)

  • Rules and Course - Subject to Change

    Because of the time and nature of this event, Ultramarathon participants will have to run on the sidewalks, follow all traffic laws, etc. to enhance safety and avoid disqualification. There are no road closures or traffic control in the first loop of the Ultramarathon. Be alert. Do not take risks. For the first loop of the Ultramarathon, participants will be expected to obey the California Vehicle Code (see below for more details on the California Vehicle Code):

    • Cross roads only in crosswalks or at intersections and allow approaching vehicles to pass.
    • Stop at red lights.
    • Do not run in a bicycle lane when a sidewalk is adjacent.
    • Run on the LEFT side of the road against traffic.

    If you have any questions, please contact us at:

    Additional Rules:

    1. Medical history should be written on the backs of bibs to expedite the delivery of emergency care.
    2. Bib number should be worn on the front of your shirt or shorts.
    3. Keep noise to a minimum on streets and at aid stations on the first loop.
    4. Must run with a head lamp and reflective vest/gear; a blinking red light is STRONGLY recommended. 52.4 participants will NOT be allowed to participate without proper reflective gear.
    5. Hat or visor to reduce the glare of headlights is recommended.
    6. Carrying pepper spray and/or whistle is recommended.
    7. Each 52.4 participant must carry a course map and a cell phone during the first loop (Participants will be provided with a 52.4 Ultra Marathon and San Francisco Marathon phone number to call in case of emergency).
    8. Each 52.4 participant must carry a water bottle during the first loop.
    9. Do not litter the neighborhoods, parks or streets of San Francisco! Carry trash with you until you meet up with at an aid station.
    10. If you need to drop out of the event, please stop at one of the aid stations and notify them that you are not continuing. Volunteers will transport you back to The Embarcadero or help you secure a ride back (Taxi).
    11. No dogs, children, strollers, alcohol or headphones allowed.
    12. Wheelchairs need prior approval.
    13. Pacers are not allowed. Only registered 52.4 participants may participate in this event.

    California Vehicle Code

    Be safe. Read the Rules.

    PEDESTRIANS’ RIGHTS AND DUTIES (Excerpted from the California Vehicle Code)
    21950. (a) The driver of a vehicle shall yield the right-of-way to a pedestrian crossing the roadway within any marked crosswalk or within any unmarked crosswalk at an intersection, except as otherwise provided in this chapter. (b) The provisions of this section shall not relieve a pedestrian from the duty of using due care for his or her safety. No pedestrian shall suddenly leave a curb or other place of safety and walk or run in the path of a vehicle which is so close as to constitute an immediate hazard. No pedestrian shall unnecessarily stop or delay traffic while in a marked or unmarked crosswalk. (c) The provisions of subdivision (b) shall not relieve a driver of a vehicle from the duty of exercising due care for the safety of any pedestrian within any marked crosswalk or within any unmarked crosswalk at an intersection.

    21951. Whenever any vehicle has stopped at a marked crosswalk or at any unmarked crosswalk at an intersection to permit a pedestrian to cross the roadway, the driver of any other vehicle approaching from the rear shall not overtake and pass the stopped vehicle.

    21952. The driver of any motor vehicle, prior to driving over or upon any sidewalk, shall yield the right-of-way to any pedestrian approaching thereon.

    21954. (a) Every pedestrian upon a roadway at any point other than within a marked crosswalk or within an unmarked crosswalk at an intersection shall yield the right-of-way to all vehicles upon the roadway so near as to constitute an immediate hazard. (b) The provision of this section shall not relieve the driver of a vehicle from the duty to exercise due care for the safety of any pedestrian upon a roadway.

    21955. Between adjacent intersections controlled by traffic control signal devices or by police officers, pedestrians shall not cross the roadway at any place except in a crosswalk.

    21966. No pedestrian shall proceed along a bicycle path or lane where there is an adjacent adequate pedestrian facility.

  • Perks & Benefits
    All participants receive a technical fabric long-sleeved shirt. View sizing info here. Finishers receive a finisher’s medal, free photos, electronic finisher’s certificate, and individual care, both on and off the course and following – including food, beverage, heat sheet and medical care.
  • Awards
    Awards will be given to the top three overall women and top three overall men. Time is based on your combined time of both loops. Once official results have been finalized, award plaques are created, personalized and mailed.
  • Scoring
    Awards will be given to the top three overall women and top three overall men. Time is based on your combined time of both loops. Once official results have been finalized, award plaques are created, personalized and mailed.
  • Divisions
     Ultramarathon: Open

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