You’ll need to prepare for the ride long before inflating your tires. Follow these tips for making the most of your trip:

It’s for experienced riders only. There are no shoulders along Rim Drive, and you’ll feel it whenever a vehicle passes you—especially on several of the route’s hairpin turns. As if that weren’t enough, the grueling workout demands several thousand feet of elevation gain, and you won’t find potable water along the route (other than at Rim Village). Then, there’s the altitude: You’ll be navigating the route at 7,000 feet.

Know when to go. Rather, know when not to go. Since you’ll share the road, try to avoid holidays, weekends, and the middle of the day. If possible, plan for shoulder season—generally, mid-June to Independence Day and Labor Day to early October—when the whole route is open, but crowds aren’t quite so heavy.

Keep an eye on cell reception. Cell phones can go from “no service” to full coverage in the span of a few feet, so take that into consideration ahead of time if you’ll need your phone for navigation.

Plan your route. For the most part, there’s no wrong way to ride the rim at Crater Lake. But by riding counterclockwise, you’ll save some of the park’s most scenic viewpoints for the end, when you’ll most appreciate a breather. In addition, if you’re going clockwise, you’ll end your ride with more of a climb.

Test your brakes. Rim Drive swaps short, steep descents for longer, more gradual grades. That, along with weather-damaged roads, can tax your bike’s brakes—so check cables to ensure they’re tight enough, and consider installing new brake pads before setting out.

Crater Lake National Park spends much of the year buried under several feet of snow—the average annual snowfall at park headquarters is 43 feet—so it’s difficult to predict when the entire Rim Drive route will open for the season. (Keep an eye on the official park website in May, June, and July for opening dates.) That said, here’s what to know for the most popular seasons.

Spring: West Rim Drive generally opens between late May and mid-June, and East Rim Drive opens a few weeks later. Seasonal opening dates depend on the previous winter’s snowfall totals and springtime snowmelt.

Summer: All roads in the park generally open by mid-July, but summer brings the biggest crowds to Crater Lake. Brace for the most congested roadways at midday, especially on weekends.

Fall: Freezing temperatures return in late September and early October (along with the season’s first snow flurries), and most in-park businesses close by Halloween. Rim Drive generally closes for the season by mid-October or early November.

Held on two Saturdays every September, Ride the Rim gives cyclists the opportunity to ride the 25-mile East Rim Drive while it’s completely closed to traffic (you can complete the full loop on the West Rim Drive, but that section is open to vehicles). The ride includes shuttles, bike corrals, and water refill stations along the way. Snacks are generally donated but aren’t guaranteed, so riders should bring plenty to sustain themselves. Note that the shuttle is only between North Junction (where Rim Drive meets the northern entry road) and park headquarters along the West Rim, and no SAG wagon is available.

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Natural beauty extends in every direction along Rim Drive. Here are some of the highlights cyclists can expect along the 33-mile route.

Rim Village: Perched on the lake’s southern shore, Rim Village is the beating heart of Crater Lake National Park. Rim Village hosts Crater Lake Lodge, a café, a gift shop, several viewpoints, and a visitor center.

Cleetwood Cove: The hiking trail descending to Cleetwood Cove offers the only safe and legal access to the Crater Lake shore. If you haven’t burned enough calories on the ride (ha!), the path drops 700 feet over 1.1 miles. Just remember to save some energy for the return route back to the rim.

Phantom Ship Overlook: There are few better places along the rim to enjoy views of the Phantom Ship, a rock formation that rises 170 feet above the lake.

Cloudcap Overlook: The highest point in the park accessible to vehicles and bicycles delivers some of the park’s best views from high above the lake’s eastern shore.

Watchman Overlook: Along the park’s western shore, Watchman Overlook showcases the park’s best (roadside) views of Wizard Island.

Riding the Rim Drive around Crater Lake isn’t easy. But for experienced cyclists, it’s one of those bucket-list adventures that’s well worth the effort. It’s one of the most beautiful parts of the country and seeing it by bike is an experience that’s hard to pass up—just be sure to keep up with the training before you make the trek.

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