San Francisco, CA, United States · Sunday, December 6, 2026

Fixed Distance 50K

Hunter S. Thompson Fear & Loathing 50 Km

94 days away
50 km Distance
not publishedn/a Climbing
2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

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37.7749° N, 122.4194° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 11 hours 13:12 min/km average. Generous. Walkable throughout for most of the field. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. More forgiving than 62% of 50K races. Measured against 982 races of the same distance. Cut-off calculator →
Field size ~97 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 13°C
Night low 6°C
Rainfall Showers likely
Daylight 9 h 41 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 87 m. Not a forecast.

The Aid Station

Course-specific beta from the community

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 50 km of trail.

  • Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition 50 km of self-supported fuelling between aid stations.
  • Hydration Vests Flask capacity for 50 km, without the bounce.
  • GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

Brooks

Catamount 3

★★★★★ 4.5

La Sportiva

Prodigio Pro

$225 ★★★★★ 4.6

Maurten

Gel 100

Hydrogel technology for 25g carbs per gel with minimal GI distress.

$3.5 ★★★★★ 4.7

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7
All gear guides →

Course Notes

An urban adventure in the beautiful San Francisco. The course starts at the highest point of the city, Twin Peaks. It follows the famous 49 Mile Scenic Drive on city streets to visit each and every tourist spot on foot.

Similar races

Other 50K trail ultras, closest in distance first.