For this Bellingham guided adventure, you will need to be able to bike for around 4 hours, depending on the itinerary you choose. The day will typically involve riding between 5 and 10 miles with 1,000-2,000 feet of climbing, but this is not a rule. After booking, your guide will determine the group’s skill level and capabilities and cater the day to your specific abilities. Keep in mind, opting for the full day option means more biking, which is strenuous even if you stay on beginner level trails.