ʻAnaehoʻomalu Beach to Maunakea Visitor Information Station century ride— South Kona

This ride is considered one of the most challenging road cycling experiences globally. It involves extreme elevation gain (over 9,000 feet to the VIS), sustained steep gradients, and high altitude, where oxygen levels are significantly reduced. Rapidly changing weather conditions and strong headwinds can add to the challenge, making it suitable only for highly experienced and well-prepared cyclists.

The terrain is incredibly diverse. You'll start with relatively flat coastal roads, transitioning to rolling hills and lava fields. As you head inland towards Saddle Road, the climb becomes consistent. The Mauna Kea Access Road presents the steepest challenge, with sustained grades up to 14-15% on paved surfaces before reaching the Visitor Information Station. The route takes you through multiple climate zones, from tropical coast to an alpine desert environment.

Absolutely. The ride offers breathtaking scenery that changes dramatically. You'll pass lava fields contrasting with the ocean, expansive ranchlands, and unique volcanic landscapes along Saddle Road. As you ascend Maunakea, expect panoramic views, often above a 'sea of clouds,' and a lunar-like landscape near the summit. You might also spot the Kings Highway Foot Trail and Petroglyphs near the start and the Humuʻula Sheep Station further inland.

The Big Island generally offers good cycling weather year-round, but for the Maunakea ascent, the drier months from April to October are often preferred to avoid heavy rains and potential snow at higher elevations. However, weather can change rapidly at altitude, so always check the forecast and be prepared for cold, wind, and fog regardless of the season.

Parking is available at ʻAnaehoʻomalu Beach (A-Bay). There are public parking lots that provide access to the beach and surrounding areas. Arriving early is advisable, especially on weekends or holidays, as these spots can fill up quickly.

Due to the extreme difficulty, high altitude, and long distance, this specific century ride is not suitable for family cycling or for bringing dogs. The conditions on Maunakea are harsh and dangerous for pets, and the ride itself requires advanced cycling experience and physical fitness.

Generally, no specific cycling permits are required for the roads themselves, including the Mauna Kea Access Road up to the Visitor Information Station. There are no entrance fees for the Maunakea Forest Reserve when cycling on public roads. However, if you plan to venture onto any trails or beyond the VIS towards the summit, specific regulations or permits might apply, so it's always best to check with local authorities or the Maunakea Observatories for the latest information.

Given the extreme conditions, self-sufficiency is crucial. You should bring ample water (at least 3-4 liters), high-energy food, and layers of clothing suitable for tropical heat to freezing temperatures (base layer, jersey, windproof jacket, arm/leg warmers, gloves). Sunscreen, sunglasses, a helmet, bike repair kit, and a powerful front and rear light are also essential. Consider a support vehicle for safety and resupply.

While primarily a road cycling route, sections of the ride may briefly pass near or intersect with other paths. For instance, you might encounter parts of the King's Highway Foot Trail, Old Highway Road, or Kahinahina Road (R-1) in certain areas. However, the main focus of this century ride is the paved road ascent to Maunakea.

Services become very limited once you leave the coastal areas. While the South Kona region is known for its coffee farms and some local eateries, integrating these into a direct century ride to Maunakea would require significant detours. Along the main route towards Maunakea, especially on Saddle Road and the Maunakea Access Road, there are virtually no services. It's vital to carry all necessary food and water or arrange for a support vehicle. The Maunakea Visitor Information Station has limited facilities, including a small gift shop with snacks and drinks, but these should not be relied upon for primary nutrition.

Yes, acclimatization is highly recommended. The high altitude significantly reduces available oxygen, which can severely impact performance and lead to altitude sickness. Even reaching the Visitor Information Station at 9,200 feet can cause symptoms. Spending a day or two at a moderate elevation (e.g., around 6,000-7,000 feet) before your ride can help your body adjust.