---
title: "Snowdonia's original A5 road | CELTICOS"
url: 'https://www.celticos.com/public/index.php/blog/snowdonias-original-a5-road'
description: "The A5 London Holyhead Trunk Road is a major road in England and Wales. It runs for about 275 miles from London to the Irish Sea at the ferry port of Holyhead.\_Early 19th-century Britain's most famous road - the original trans-Britain highway built by the civil engineer Thomas Telford to improve communication between London and Dublin after the act of union in 1800.\_&"
type: article
site_name: Celticos
locale: en_GB
author: Celticos
published: '2018-07-06T15:51:27+00:00'
modified: '2018-07-06T15:51:27+00:00'
image: 'https://www.celticos.com/img/asset/YXNzZXRzL2ZlYXR1cmVkLWltYWdlcy8yMDE4MDcwNl8xMTIzMjEuanBn/20180706_112321.jpg?w=440&h=220&fm=webp&fit=crop&q=65&s=9b5e3258309e92ffad186c00213683a1'
---

# Snowdonia's original A5 road | CELTICOS

# Snowdonia's original A5 road

![Old A5 Ogwen Valley](https://www.celticos.com/img/asset/YXNzZXRzL2ZlYXR1cmVkLWltYWdlcy8yMDE4MDcwNl8xMTIzMjEuanBn/20180706_112321.jpg?w=1440&fm=webp&q=55&s=9f3099fc5b4edade599125c0e40d9312) Old A5 Ogwen Valley  

The A5 London Holyhead Trunk Road is a major road in England and Wales. It runs for about 275 miles from London to the Irish Sea at the ferry port of Holyhead.

Early 19th-century Britain's most famous road - the original trans-Britain highway built by the civil engineer Thomas Telford to improve communication between London and Dublin after the act of union in 1800.

![Old A5 Ogwen Valley](https://www.celticos.com/img/asset/YXNzZXRzL2ZlYXR1cmVkLWltYWdlcy8yMDE4MDcwNl8xMTIzMjEuanBn/20180706_112321.jpg?w=748&h=994&fm=webp&fit=crop&q=60&s=3533356299b63f99b8c38e1db4624d12) Old A5 Ogwen Valley  

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