01 / KNOW THE ROUTE
What the course asks of you
Settle on the A5
From the Showground the route heads west on the A5, a wide road that is fully closed for the race. That makes the first couple of miles a good place to settle into your rhythm without weaving. Use it, rather than sprinting off with the crowd.
Gently rolling, not flat
The organiser describes the return leg as gently rising and falling. It is the kind of course where pace drifts up and down a little with the road, so run by even effort rather than trying to hit the same split every mile.
Eryri for the finish
Eryri comes back into view as you head back towards the Showground, with music and the event village at the finish. It is a good moment to lift your effort for the last mile if you have run the middle sensibly.
02 / BUILD THE BLOCK
How to prepare
Build the aerobic base first
For most people the biggest gain in a half marathon comes from consistent easy running. Keep most of your weekly mileage comfortable and build your long run gradually towards 11 to 14 miles, depending on your experience.
Add threshold work
Once the base is there, a weekly session around threshold, the effort you could hold for about an hour, is pretty much the bread and butter of half marathon training. Tempo runs and longer reps both work.
Practise on rolling roads
Because the course rises and falls, do some of your steady and tempo running on gently undulating roads. Practise taking a gel and a drink at race effort too, so the High5 on the course is not a surprise.
Keep your running and strength work in one place. Explore MaxMile for your Anglesey Half preparation, or compare the levels of personal coaching.
03 / PUT IT INTO PRACTICE
Pace the race you have trained for
Aim to run the first three miles a touch slower than goal pace, let the closed A5 carry you into a rhythm and then hold an even effort through the rolling middle section. Small rises cost a few seconds; chasing them back on the next downhill costs more.
From around ten miles, if you still feel controlled, start to wind it up towards the Showground. If the wind is blowing across the island, tuck in behind other runners where you can.
04 / MAKE ROOM FOR TRAINING
When should your block start?
The Anglesey Half Marathon is on Sunday 23 May 2027, about 27 weeks from mid November 2026. A 12-week half marathon block starts around 1 March 2027, which leaves the winter for general base running, and it fits well after a spring marathon or a March half.
Put your longest runs and hardest threshold sessions in April and early May, then taper for the last 10 to 14 days. Entry prices go up in tiers, with the third tier ending on 16 May 2027 and a final tier to 22 May, so entering early is cheaper.
05 / SORT THE PRACTICAL BITS
Kit and race-weekend planning
Final instructions are published on the event website about 10 days before the race and confirm the start time and cut-off details. If you live outside the UK, opted to collect your bib, or entered within 21 days of the race, collect your bib near the start from one hour before your race. There is a secure bag drop and an event village with food.
The event is bilingual, with signs, registration and commentary in English and Welsh. Plan your journey to the Showground with time to spare, as everyone arrives at the same venue on race morning.
