Sithee at Slawit Again

JUL
11
2026
Trail races from Slaithwaite along the Huddersfield narrow gauge canal to Tunnel End, offering 5k, 10k, half and marathon distances with feed stations, marshals, a cup-less policy and a 6.5 hour cut-off.
Marathon Half Marathon 10 kilometers 5 kilometers

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Sithee at Slawit Again

The event is based in the village of Slaithwaite with registration, toilets and bag drop at Slaithwaite Community Centre on Bank Gate. The course follows a stretch of the Huddersfield narrow gauge canal, described as undulating and containing many locks. The route runs out to Tunnel End, which includes a 3.5 mile tunnel under the Pennines; boat trips and kayaking operate on certain days.

There are four distance options:

  • 5k
  • 10k
  • Half marathon
  • Marathon

Races are licensed by the Trail Running Association and the event uses a 6.5 hour cut-off. Feed stations are placed at roughly three-mile intervals offering drinks and food; the event aims to be cup-less so participants are advised to use a reusable cup or bottle. Marshals are positioned on the course to provide direction and assistance, and there may be unmarshalled road crossings. The organiser requests that large over-ear headphones are not worn; bone-conducting devices or one-in-one-out in-ear use are acceptable if earphones are needed. Transfers can be self-served within 48 hours, and participants who retire should notify the nearest marshal.

At the finish participants receive a bespoke medal, drinks and edible refreshments. Parking is limited at the canal; additional parking is available in town carparks and side streets. Visit the organization's website for the most recent information.

Marathon
Marathon
Half Marathon
Half Marathon
10 km
10k
5 km