Glan Morfa Lodge (https://www.holidaycottages-anglesey.com) has 6 self-catering cottages of various sizes, set on a 37-acre nature reserve, 5 minutes away from Newborough and 15 minutes away from Menai Bridge.
Ty Croes Farm Vineyard Campsite (http://www.vineyardcamping.com) Welcome to Ty Croes Farm Campsite - a unique Anglesey campsite in a tranquil vineyard setting. Just a short (2km) journey from the pretty village of Newborough with its neighbouring pine forest, red squirrels and sand dunes. The area boasts some of the finest scenery and beaches in the UK - all within a short drive (or cycle) of Ty Croes.
The Bulkley Hotel in Beaumaris is in a stunning location, is a beautiful place and is very bike friendly!
On the mainland (and just a short drive away) our recommended hotel would be the Celtic Royal in the royal town of Caernarfon, with a gym and pool it's a great place to relax after your race!
For Anglesey there are lots of options at the Visit Anglesey website as well as a number of local options to Newborough...