X Ultramarathon Autumn Equinox

Race completed

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.

59.1333° N, 37.9000° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 6 hours 7:12 min/km average. Tight. Sustained running. Long aid-station stops will cost you. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. Among the tightest 50K cut-offs we track. Measured against 1038 races of the same distance. Cut-off calculator →

Field size ~3 Tiny. You will run alone for most of it.

DUV results for the 2024 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, September

Daytime high 14°C

Night low 8°C

Rainfall Mostly dry

Daylight 12 h 37 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 127 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2024	100km	3	Sergei Borisov · 08:57:39	—

0% of the 2024 field were women.

DUV results for the 2024 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

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

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.

Salomon

Sense Ride 5

RunRepeat found the Salomon Sense Ride 5 to have immaculate lockdown and a smooth and stable ride, making it confident on moderate trails and steep downhills. I…

★★★★★ 4.5

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Tailwind

Endurance Fuel

All-in-one calorie and electrolyte drink mix. 200 calories per serving.

$25 ★★★★★ 4.8

Nathan

VaporKrar 12L

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

$170 ★★★★★ 4.6

Suunto

Vertical

Titanium GPS watch with solar charging, offline maps, and 140-hour GPS battery.

$630 ★★★★★ 4.5

All gear guides →

Overview

The X Ultramarathon Autumn Equinox, organised by Sports Club Cherepovets, is a 50k track race in Cherepovets, Russia, held on September 19, 2026. This is a new event, with just 1 edition run in 2024, attracting 3 finishers.

With a 6-hour time limit, this race has a tighter cutoff than 98% of 1013 comparable 50k races, requiring a pace under 7.2 minutes per kilometer. The field size is small, with only 4% of 2654 comparable 50k races having fewer finishers.

Similar races

Other 50K trail ultras, closest in distance first.