OuterEdge Events


16th – 17th JUNE 2023

The T S U N A M I o c e a n t r a i l s are back with another tidal wave of Trail Running. Due to hit the North Devon and Cornish coastline again this summer: Friday 16th and Saturday 17th June 2023.

Friday 16th June will be the start of our iconic  TSUNAMI 24, a 75-mile ultramarathon, starting and finishing at Castle Bude.

75 miles, 24 hours max, 5000m of ascent

The existing TSUNAMI ULTRA (37.5 miles), TSUNAMI (Clovelly Marathon), TSUNAMI SIXTEEN continue in 2023.






We’ve chosen the most rugged, wild and remote section of the North Devon and Cornish coastline for some extreme fun

along the clifftops and cliff trails between Westward Ho! and Bude (Ultra-Marathon, 37 miles), Clovelly and Bude (Marathon),

Hartland Quay and Bude (16 miles). 

Garmin GPX file for TSUNAMI 24 (75 miles)

Garmin GPX files covering all races up to 37.5 miles


We’ve procured the iconic Clovelly harbour for the start of the Marathon…uphill on the cobblestones through the

village to reach the Coast Path and finish on the lawns of Castle Bude – taking in almost 2,000m of ascent along the route.

It’s a tidal wave of endurance trail running.

The Ultra adds another 11 miles of serious fun, while the sixteen includes the toughest, most vertiginous section from  Hartland Quay.

These races are undoubtedly some of the toughest trail running challenges in the South-West. Due to the nature of the terrain –

wild and isolated (no towns or villages along the route), they will also prove to be the most rewarding.

OuterEdge designed Tsunami medal to all finishers.

Bespoke Tsunami t-shirt and/or Bus transport to the start of each race from Castle Bude will be available to purchase,

via SiEntries entry system.

Will you be a finisher or will you be wiped out trying.

This is not for the faint-hearted. With massive ascents and descents, it will be one of the toughest routes in the South West.

OuterEdge checkpoints will be superbly stocked and managed by runners for runners to get you through to the end,

where a well-earned bespoke medal sits awaiting your return!

Race permit granted by the Trail Running Association