Lon Las Cymru South map - the official, up to date cycle route in South and Mid wales.

Lôn Las Cymru South Map | Llanidloes to Chepstow/Cardiff Cycle Route (Route 8)

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Sustrans' Lon Las Cymru South map is the official cycle route map for the southern half of the stunning Lon Las Cymru ride along National Route 8, featuring up to date mapping on waterproof paper. 

Long-distance cycle map for Llanidloes to Chepstow or Cardiff bike route using NCN 8

The Lon Las Cymru South route connects Llanidloes in the heart of Wales to the attractive finishing points of Cardiff or Chepstow.

There are two route options - one via Hay-on-Wye to Abergavenny and Chepstow with a taste of the Black Mountains, and the second, following the largely traffic-free Taff Trail from Brecon to Cardiff via Merthyr Tydfil.

This full-colour map based on Ordnance Survey data shows clearly mapped cycle routes on traffic-free paths, quiet lanes and roads, with easy-to-read contours and route profiles. Also features detailed inset maps for the major towns and cities and tourist information. 

Shop all our long-distance cycle maps here.

Map details:

Publisher: Sustrans

ISBN: 978-1-914410-49-9

Published: 2023

Miles: 118 or 104

Size: 12.5 x 24cm folded, 87 x 47cm unfolded

Scale: 1:100,000

Paper: Printed on durable, waterproof paper and RPolyart Paper

National Route 8 between Llanidloes and Cardiff

National Route 42 between Glasbury and Chepstow

Where can I send route suggestions? 
Please send all route suggestions to our Customer Service team at customer.services@sustrans.org.uk

Is there a PDF or GPX version to match the paper map?
You can find our selection of downloadable maps here. 
We are working to expand our selection. 

What is the paper quality like for Sustrans maps?
All of our maps are printed on waterproof and tear-resistant paper that can be recycled -perfect for all of your cycling adventures! 

Where can I find the maps for Route 1?
On any Sustrans map page, click the blue square under "Routes covered" to be linked to all the related maps featuring that route number. 

Where does the maps cover?
To see the coverage of Sustrans maps visit our Help with Maps page, showing the coverage of our long distance and regional maps. 


Orders received by 12pm will be dispatched on the same day Monday to Friday. Orders placed over the weekend will be shipped Monday, excluding bank holidays.


Free delivery for all UK orders over £100

Standard delivery £2 for orders of Sustrans maps (up to 2 maps)

Standard delivery £3.95 for orders up to 2kg 

Standard delivery £5.50 for orders over 2kg

Next day delivery (courier) £11

Rest of the world

Delivery charges vary according to weight.

EU orders are subject to VAT charges which are included in the price seen at point of payment.

Delivery is via a specialised EU courier and can take up to 2 weeks. 

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