raceindex.org
Explore
Explore RaceIndex

Find your race. Make your plan.

Find a race

Choose your distance and destination.

Compare courses

See what changes from race to race.

Enter and prepare

Turn your choice into a race plan.

Race weekend

Plan travel, support and the finish.

Your next goal

Find a race that fits your experience.

Find a race
Compare courses
Enter and prepare
Race weekend
Your next goal
My Season Save races, keep preparation tasks and plan what comes next.
About RaceIndexOur methodologyData coverageCyclingTriathlon
  • Ultramarathon
  • 84.4 km
  • San Francisco
  • Event dates –
  • Past event

The San Francisco Marathon Ultramarathon

This race edition

Race date
Date not confirmed for this distance
Race timezone
Timezone not confirmed
Edition status
Status not confirmed

Entry options

2026 edition

Entry options are not yet confirmed for this edition. Check the organiser before making plans.

Official event website ↗
Data current as of

Decision summary

The San Francisco Marathon Ultramarathon at a glance

Typical conditions
65/100

Historical race-date favourability, not a forecast

Evidence depth
20 verified facts

Source facts available

Route details

Known course facts at a glance

Methodology →

The San Francisco Marathon Ultramarathon has known course details for its ultramarathon race. The summary below keeps the focus on what is confirmed for the course.

Official distance
84.4 km
Terrain
Road
Scenery
City, Waterfront, Coastal, Parkland, Forest, Historic

Quick answers

What runners ask first

What is the The San Francisco Marathon Ultramarathon course like?

Underfoot, expect a road course. The setting includes city and waterfront. multiple distance options including a unique two-loop 52.4-mile ultramarathon and two complementary half marathons covering the first and second halves of the marathon course. first (night) loop on open streets with no road closures, second loop on the official closed-road marathon course.

Race character

Scenery

  • City
  • Waterfront
  • Coastal
  • Parkland
  • Forest
  • Historic

Terrain

  • Road

Entry, logistics and records

Records and field

Field size
Approximately 27,500 places across all distances; grown from ~900 runners at the 1977 inaugural to more than 25,000 today

Entry requirements

Entry status
Past event: The listed edition date has passed.
Cut-off
52.4-mile (two-loop) ultra starts 10:15 p.m. Saturday; first loop must finish before the final marathon corral start (5:15 a.m.), second loop within 6 hours; minimum ~13:45/mile pace on second loop
Sold out
No

Race day logistics

Expo / packet pickup
Health & Fitness Expo at Fort Mason Festival Pavilion, #2 Marina Blvd; Fri Jul 24 11:00-19:00 and Sat Jul 25 09:00-17:00
Medal
Full marathon finishers receive a technical fabric long-sleeved shirt and a finisher medal

Course facts

Notable features
  • Abbott WMM Wanda Age Group World Championships qualifying event
  • multiple distance options including a unique two-loop 52.4-mile ultramarathon and two complementary half marathons covering the first and second halves of the marathon course
  • 'pay over time' financing via Affirm offered at registration
  • 52.4 miles run as two consecutive marathon loops
  • first (night) loop on open streets with no road closures, second loop on the official closed-road marathon course

What are typical race-day conditions?

  • 16°CTypical temperature
  • 28 kphTypical wind
  • 0 mmTypical rainfall
  • 65Favourability /100
Typical conditions for the race date and locality, warmer than the endurance-optimal window. These are climatological norms, not a forecast, and are shared across every distance at this event.

How we calculated this

Published facts and derived model outputs on this page are tied to stored sources or a published, version-locked methodology. We show the provenance so runners, coaches and organisers can check it. Data on this page is current as of .

Derived numbers use scoring-methodology-v1.0.

Sources used on this page (2)

Read the full methodology →