What to do on achill island Achill Activities Achill is Ireland’s “Adventure Island”. Surfing, diving, kayaking, fishing, hiking, cycling trails & amazing vistas to explore! Wild Atlantic Waves! Surfing, Boat Trips, Kayaking & More On the Water Discover More Bike Hire Available On 2 Wheels Cycling Routes Discover More Self Guided or Leader Multi-level trails Hiking & Walking Discover More See the Sights self guided scenic drive The Atlantic Drive Discover More Walk or Cycle Achill to Westport Great Western Greenway Discover More Open June-September at The Valley House Woodland Faerie Trail