How far is the Lakes Mountain 40?

The Lakes Mountain 40 is one distance: 40 Mile (64.4 km).

How much climbing is in the Lakes Mountain 40?

The 40 Mile has 3,048 m of ascent.

Is the Lakes Mountain 40 course marked?

No. The Lakes Mountain 40 is not a marked course. You are expected to navigate it yourself.

When is the next Lakes Mountain 40?

Sat, 10 Apr 2027, 06:00. Entries open.

NAV4 Adventure Lakes Mountain 40

Askham Community Centre, Askham, CumbriaSat, 10 Apr 2027

Forty fell miles over Helvellyn and High Street, unmarked, off at dawn.

40 Mile

64 km

3,048 m ascent

47 m per km

fellmountainNavigation required

Nobody has reviewed this one yet

No reviews of the Lakes Mountain 40, and nothing on what people wore. Both are things no organiser publishes and every runner wants before they enter — how it actually went, and what was on your feet.

Ran it? Write the first review

Running it soon? Connect Strava and we will ask you about it the day you finish, so you do not have to remember to come back.

The course

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Cut-offs

A tough unmarked mountain route with free route choice between checkpoints over open access land, provided it is legal. Mass start at 06:00. Three roadside checkpoints. NAV4 expect most runners to take ten to twelve hours, some fifteen or sixteen.

Train for it: routes near the start

Routes starting within 20 km of Askham Community Centre, Askham, Cumbria, nearest first. Each one has a free GPX file and a TRP grade, so you can rehearse the ground before race day.

EXPERT

Tour de Helvellyn

58.6km · 2,129m climb · Loop · 0.1km away

A genuine ultra-distance day that shows you the Helvellyn range from every angle without ever queuing for Striding Edge - based on the established Tour de Helvellyn race route.

Checked Jul 2026

VERY HARD

Helvellyn Range and St Sunday Crag from Glenridding

20.6km · 1,300m climb · Loop · 14km away

Seven summits of the Eastern Fells in one continuous high-level horseshoe, finishing over St Sunday Crag with Ullswater filling the view ahead.

Checked Jul 2026

VERY HARD

Helvellyn via Striding Edge and Swirral Edge from Patterdale

12.7km · 824m climb · Loop · 14km away

This is the postcard round of Helvellyn: up the knife-edge of Striding Edge, across the 950m summit, and down Swirral with Red Tarn below the whole way.

Checked Jul 2026

EXPERT

Bob Graham Round Leg 2: Threlkeld to Dunmail Raise

22.3km · 1,690m climb · Point to point · 19km away

It is the great runnable middle of the Bob Graham: a near-continuous high ridge where you can hold a rhythm over twelve tops without ever dropping to the valley.

Checked Jul 2026

All Lake District routes →

How to enter

Sat, 10 Apr 2027 · Entries open

Enter on their website ↗

Entries are handled by NAV4 Adventure, not by us. We take nothing for sending you there.

Add to your calendar · with the start time

Common questions

: The Lakes Mountain 40 is one distance: 40 Mile (64.4 km).
: The 40 Mile has 3,048 m of ascent.
: Not graded yet. A TRP grade is worked out from distance and climb measured off the course file, and there isn't one for the Lakes Mountain 40 yet.
: No. The Lakes Mountain 40 is not a marked course. You are expected to navigate it yourself.
: We don't hold a compulsory kit list for the Lakes Mountain 40. NAV4 Adventure confirm mandatory kit in their race information, usually in the final instructions.
: A tough unmarked mountain route with free route choice between checkpoints over open access land, provided it is legal. Mass start at 06:00. Three roadside checkpoints. NAV4 expect most runners to take ten to twelve hours, some fifteen or sixteen.
: We don't hold a checkpoint list for the Lakes Mountain 40. What's on the table varies a lot between races, so check the NAV4 Adventure race information rather than turning up expecting food.
: Not yet — we don't hold a course file for the Lakes Mountain 40. Some organisers only send the GPX to entrants. If we get one, it goes up free, with no sign-up.
: Sat, 10 Apr 2027, 06:00. Entries open.