It's Grim Up North Running Slawit Snowstorm Shuffle
The Huddersfield Narrow Canal from Slaithwaite out to Tunnel End and back, lock after lock, the most undulating towpath they have. 5k to marathon, six and a half hours.
| Distance | Ascent | Per km |
|---|---|---|
| 42.2 km Marathon | — | — |
| 21.1 km Half Marathon | — | — |
| 10K | — | — |
| 5K | — | — |
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No reviews of the Slawit Snowstorm Shuffle, 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.
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Pick your distance
6h 30m cut-off, which needs 78:00/km
starts 08:30
What you’re in for
The January race from Slaithwaite, 5k to marathon, out to Tunnel End and back with a six-and-a-half-hour cut-off. The course is the Huddersfield Narrow Canal from Slaithwaite — Slawit to anyone local — up the valley towards Marsden and back, an out-and-back turning at a marshal. This stretch climbs lock after lock, so the way out is uphill and the way back is not, and the organiser calls it the most undulating towpath they have. Registration is at the community centre on Bank Gate; the start is on the canal outside Waves. The full-distance events run all the way out to Tunnel End at Marsden, where the canal disappears into Standedge Tunnel, over three miles long under the Pennines; the marathon is two laps of the half.
Terrain and trail
Towpath that varies from surfaced to grass and stone, with a ramp at every lock — and there are a lot of locks between Slaithwaite and Marsden. It is still a canal, so nothing is steep for long, but it is not the flat towpath of the Leeds & Liverpool events, and a long day here is a harder day. Wet and muddy in the low sections after rain; the winter edition can be icy. Feed stations roughly every three miles with drinks, sweets and cake, and the events are cup-less, so bring your own cup or bottle. A GPX is supplied and not every junction has a marshal, so know where the turn is. Over-ear headphones are not allowed, and some road crossings are unmarshalled.
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Cut-offs
6.5 hours for every distance.
Train for it: routes near the start
Routes starting within 20 km of Slaithwaite Community Centre, Bank Gate, Slaithwaite, nearest first. Each one has a free GPX file and a TRP grade, so you can rehearse the ground before race day.
HARDHow to enter
Sat, 30 Jan 2027 · Entries open · £18–£43
Enter on their website ↗Entries are handled by It's Grim Up North Running, not by us. We take nothing for sending you there.
Add to your calendar · with the start time
Common questions
- The Slawit Snowstorm Shuffle offers 4 distances: 5K (3.1 miles), 10K (6.2 miles), Half Marathon (21.1 km / 13.1 miles), Marathon (42.2 km / 26.2 miles).