Skip to content
kliva
UltraRussiaMoscow

Mad Fox Ultra Pure Intention 2026

18.12 – 20.12.2026Pereslavl-Zalessky (Russia)
Build your race plan →

Pacing, fueling and crew sheet for the course you pick

RegisterOfficial siteWrong info?

Start line in

 

7 courses · 13–166 km8.1–103.1 mi · up to 4’060 m D+up to 13’320 ft D+

At a glance

Mad Fox Ultra Pure Intention 2026 takes place from Friday 18 to Sunday 20 December 2026 in Pereslavl-Zalessky (Moscow, Russia). 7 courses from 13 to 166 km.

Longest course: Valhalla Race 100 miles, 166 km with 4’060 m D+ (24 m per km: hilly terrain).

On Kliva, plan your pacing and nutrition for free, then send the plan to your watch.

The Mad Fox Ultra Pure Intention is the largest winter trail event in Russia, taking place in the historic town of Pereslavl-Zalessky. The event offers distances ranging from 10 km to 100 miles, with…
From the organiser

7 courses

  1. 13km8.1mi

    101 m D+331 ft D+

    avg 1%

    Mad Fox Ultra K10
    No index

  2. 21km13mi

    138 m D+453 ft D+

    avg 1%

    Mad Fox Ultra K20
    No index

  3. 31km19.3mi

    245 m D+804 ft D+

    avg 1%

    K30 outbursts
    ITRA 1

  4. 40km24.9mi

    222 m D+728 ft D+

    avg 1%

    Mad Fox Ultra K40
    ITRA 1

  5. 75km46.6mi

    486 m D+1’594 ft D+

    avg 1%

    Mad Fox Ultra K70
    ITRA 3

  6. 89km55.3mi

    560 m D+1’837 ft D+

    avg 1%

    50 miles
    ITRA 3

  7. 166km103.1mi

    4’060 m D+13’320 ft D+

    avg 2%

    Valhalla Race 100 miles
    ITRA 5

GPX trace not yet published.

Race plan

Plan your race from start to finish.

Pacing, aid stations and fueling timed to your effort on Mad Fox Ultra Pure Intention, in one roadbook.

Build your race plan →

Start

Pereslavl-Zalessky (Russia)

Skip the map

Where to stay

Find a place to stay near Pereslavl-Zalessky for the race.

We may earn a commission if you book through this map, at no extra cost to you.

Spotted wrong info on this page? Tell us and we'll review it. Report it

← Back to calendar