The World's Steepest Street Run 2023 | Always Aim High Events


Events / Road Running

The World's Steepest Street Run 2023

With a 37.45% maximum gradient Ffordd Pen Llech in Harlech shot to fame when it 'stole' the title of 'World's Steepest Street' from Baldwin Street in New Zealand. Yes, they then 'stole' it back again, but we won't let it get us down, this is still our 'World's Steepest Street Run'!

There are ten criteria a street must meet to be in contention with being named the steepest, including having to be a public thoroughfare and being fully surfaced, as well having buildings alongside the road. The awarding of the Guinness World Record to Ffordd Pen Llech and the battle from the previous holders in New Zealand to take the title back has captured imaginations world wide and people have flocked to Harlech to walk, cycle or even roll down the street - you just can't beat a bit of Welsh pride mixed with a sprinkling of the eccentric.

With Harlech already on the Always Aim High Events map as the location for our much loved sprint triathlon and duathlon, people started to ask and we just had to deliver!

Since our inaugural event in 2022 people have been begging us to run it again so they could come back to take on this unique and novel route, cheered on by the people of beautiful, friendly Harlech.

This event is an Always Aim High Community Event. Profits from our Community Events go towards supporting amazing local projects and community groups like Harlech Triathlon Club, The Community Council and Mountain Rescue.


25 Mar 2023




Choose your distance

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The Worlds Steepest Street Run 2023


25 Mar 2023

Run: 6km

Find out more The Worlds Steepest Street Run 2023
Race Photography
Race Photography Banner Mobile Version

What's Included

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Fun and Inclusive

Every person cheered over the finish

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Totally Unique!

There is no other race like this!

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On Course Support

Friendly marshals, signage and support vehicles

WSSR Slate Mockup Current View

Unique Finisher Mementos!

Beautifully designed to reflect our event locations and local history.

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Spectacular Scenery

Views across Anglesey and Snowdonia

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Professional Timing

Chip timing, live tracker and online results

Event Partners

Working with local communities