It's Grim Up North Running Cromwell Bottom Rock Up n' Run (June)

Pick your distance

What you’re in for

The Rock Up n' Run format: register from six, pay on the night if online entries have closed, run, then collect a jumble medal and a drink. It is a club night with a bib rather than a race weekend, and it is pitched that way. The June running of the 5k or 10k from Cromwell Bottom. The course runs from Cromwell Bottom nature reserve, between Brighouse and Elland, onto the Calder & Hebble towpath and back — a 5k out-and-back, run twice for the 10k. The reserve is a reclaimed stretch of the Calder valley with lakes, wetland and woodland on the canal's doorstep.

Terrain and trail

Surfaced towpath and reserve paths, flat, with a little gravel and a wooded section at the reserve end. Easy ground for a midweek evening, and about the prettiest of the Grim evening venues on a summer night. The events are cup-less, so bring your own cup or bottle for the water at the finish. Over-ear headphones are not allowed, and there may be an unmarshalled road crossing.

Train for it: routes near the start

Routes starting within 20 km of Cromwell Bottom Nature Reserve, Elland Road, Brighouse, nearest first. Each one has a free GPX file and a TRP grade, so you can rehearse the ground before race day.

HARD

Marsden 10 Mile Challenge

16.4km · 357m climb · Loop · 14km away

It is the whole of Marsden Moor in one loop - Wessenden, Standedge and the reservoir chain - on ground that carries centuries of packhorse and canal history, and you can run it door to door from the train.

HARD

Stoodley Pike from Hebden Bridge

12.5km · 300m climb · Loop · 14km away

You climb from a canal in the valley floor to a 37m stone monument on the moor edge, and the view back over Calderdale from the base of the Pike is worth every metre of the climb.

Checked Jul 2026

HARD

Easter Gate, March Haigh and Black Moss Reservoirs

16.8km · 349m climb · Loop · 14km away

You string together three reservoirs and a stretch of the Pennine Way on quiet moor tracks, with the whole of Marsden Moor opening out around you and almost nobody else about.

VERY HARD

Wadsworth Trog

31.5km · 1,044m climb · Loop · 14km away

This is the Wadsworth Trog, a proper Calderdale beast: mile after mile of high Pennine moor, peat bog and reservoir embankment that locals rate among the toughest moorland rounds in the north.

Checked Jul 2026

VERY HARD

Heptonstall and Hardcastle Crags

24.0km · 859m climb · Loop · 15km away

You get the full Calderdale contrast in one loop: the deep, wooded gorge of Hardcastle Crags and the wild open moor above, joined by the cobbled hilltop village of Heptonstall.

Checked Jul 2026

MODERATE

Shipley Glen and Baildon Moor

12.7km · 215m climb · Loop · 16km away

You start at the World Heritage village of Saltaire, run the canal and the wooded ravine of Shipley Glen, then climb to the trig on Baildon Moor for a proper moor-top view over Airedale.

All West Yorkshire routes →

How to enter

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Common questions

How far is the Cromwell Bottom Rock Up n' Run (June)?

The Cromwell Bottom Rock Up n' Run (June) offers 2 distances: 5K (3.1 miles), 10K (6.2 miles).

How much climbing is in the Cromwell Bottom Rock Up n' Run (June)?

No course file for the Cromwell Bottom Rock Up n' Run (June) yet, so there's no measured climb here. When It's Grim Up North Running publish one, this fills in.

How hard is the Cromwell Bottom Rock Up n' Run (June)?

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 Cromwell Bottom Rock Up n' Run (June) yet.

Is the Cromwell Bottom Rock Up n' Run (June) course marked?

Yes, the course is marked. Navigation skills are not required.

What kit do I need for the Cromwell Bottom Rock Up n' Run (June)?

We don't hold a compulsory kit list for the Cromwell Bottom Rock Up n' Run (June). It's Grim Up North Running confirm mandatory kit in their race information, usually in the final instructions.

What are the cut-offs for the Cromwell Bottom Rock Up n' Run (June)?

We don't hold published time limits for the Cromwell Bottom Rock Up n' Run (June). If It's Grim Up North Running set cut-offs, they'll be in the race information.

What is at the checkpoints on the Cromwell Bottom Rock Up n' Run (June)?

We don't hold a checkpoint list for the Cromwell Bottom Rock Up n' Run (June). What's on the table varies a lot between races, so check the It's Grim Up North Running race information rather than turning up expecting food.

Can I download the Cromwell Bottom Rock Up n' Run (June) route?

Not yet — we don't hold a course file for the Cromwell Bottom Rock Up n' Run (June). Some organisers only send the GPX to entrants. If we get one, it goes up free, with no sign-up.

When is the next Cromwell Bottom Rock Up n' Run (June)?

Thu, 24 Jun 2027, 18:45. Entries open.