Climbing Ol Doinyo Lengai is physically demanding and should only be attempted by experienced hikers in good physical condition. The trek involves steep ascents, high altitudes, and extreme temperatures, especially during the day. It's highly recommended to climb with an experienced guide, as the terrain can be tricky, and navigation may be challenging. Wear sturdy hiking boots, bring plenty of water, and pack sun protection, including sunscreen and a hat. Because the volcano is sacred to the Maasai people, be respectful of local customs and traditions when visiting the area.

Ol Doinyo Lengai is located in the Ngorongoro District, near Lake Natron, about 150 kilometers (93 miles) north of Arusha. The easiest way to get there is by road from Arusha, which takes around 3-4 hours. Travelers can opt to hire a car or join a guided tour to the area. Most tours include transportation, a guide, and sometimes a visit to the nearby Lake Natron, known for its vibrant red waters and flamingo populations. While the roads can be rough, particularly in the rainy season, a 4x4 vehicle is necessary to reach the base of the volcano.

The best time to climb Ol Doinyo Lengai is during the dry season, from June to October. These months offer more stable weather and clearer skies, making the climb more enjoyable and less risky. The wet season (November to May) can bring heavy rains that make the trails slippery and challenging to navigate. However, if you want to see the volcano's eruption at its most active, you can visit year-round, though it’s important to check current volcanic activity reports. Early morning treks are recommended to avoid the intense midday heat and to witness a breathtaking sunrise over the volcanic landscape.

While climbing Ol Doinyo Lengai typically requires several days, there are options for day trips or shorter hikes to explore the lower slopes and surrounding areas. Many tour operators offer day excursions to the base of the volcano, often combined with a visit to nearby Lake Natron or the Ngorongoro Crater. For those not looking to climb, visiting the area offers a unique opportunity to witness Maasai culture, explore the stunning landscapes, and enjoy views of the volcanic peak from a distance. The region also offers excellent photography opportunities, especially for those interested in landscape and wildlife photography.