10 days in Costa Rica is considered the "perfect" duration for a first-time visitor to experience a well-rounded sample of the country's diverse ecosystems. In 2026, a standard 10-day itinerary allows you to visit three distinct regions without feeling rushed: typically, you can spend 3 days in the Arenal Volcano area for hot springs and rainforest adventures, 3 days in the Monteverde Cloud Forest for zip-lining and wildlife spotting, and a final 4 days on the Pacific Coast (like Manuel Antonio or Tamarindo) for beach relaxation and surfing. While you won't have time to visit more remote areas like the Osa Peninsula or the Caribbean side in a single 10-day trip, you will cover the major "highlights." The key to making 10 days feel "enough" is to fly into San José (SJO) and out of Liberia (LIR) to avoid backtracking, and to utilize private shuttles or "inter-bus" transfers which are much more efficient than trying to navigate the winding, often mountainous local roads in a rental car on a tight schedule.