Riverside State Park Loop via Centennial Trail and Trail 25

The terrain on this loop is quite varied. You'll encounter packed dirt, old fire roads, and railroad beds, along with both single-track and wider double-track sections. Portions of the Centennial Trail are paved, offering a smoother surface, while other parts, especially on Trail 25, can be rocky and unpaved with tree coverage. Be prepared for a mix of surfaces, including some sections through meadows and forested areas.

The loop is generally rated as moderate. While many sections have mild grades, there are hills that can provide a 'stellar workout' and 'leg-burning' sections. A notable challenge is a 'screaming grade' descent on a portion of the Centennial Trail, which is very steep and might require walking back up. Stream crossings, particularly Deep Creek, can also be difficult, especially in spring when water levels are high.

You can expect diverse and impressive scenery. The route offers picturesque views of the Spokane River, often framed by striking basalt cliffs and unique rock formations found at Deep Creek Canyon and the iconic Bowl and Pitcher area. You'll also jog through serene forests, open meadows, and occasionally catch distant views of Mount Spokane.

Yes, there are several. You'll get a great View of Nine Mile Reservoir. Other highlights include the impressive rock formations and steep canyon walls of Deep Creek Canyon, and the popular Bowl and Pitcher area with its picturesque suspension bridge and basalt structures along the Spokane River. The trail also passes by sites of historical interest, such as a former CCC camp.

The Riverside State Park system has numerous trailheads. A popular access point for this loop is the Bowl and Pitcher area, which offers parking. Given the extensive trail network, you can find various parking options depending on which section you wish to start from.

Yes, a Discover Pass is required for vehicle access to Washington State Parks, including Riverside State Park. You can purchase a day-use pass or an annual pass. More information can be found on the official Washington State Parks website: wa.gov.

Yes, dogs are generally allowed on trails within Riverside State Park, including this loop. However, they must be kept on a leash at all times. Please remember to clean up after your pet to help keep the trails enjoyable for everyone.

The loop offers a great experience year-round, but spring and fall are often ideal for jogging due to milder temperatures and vibrant scenery. Be aware that in spring, stream crossings like Deep Creek can be difficult and even knee-deep due to high water levels. In winter, sections within Riverside State Park are groomed for cross-country skiing and fat tire biking, so conditions will vary.

Yes, this loop extensively uses and connects with other trails. You'll be on sections of the Spokane River Centennial Trail, Washington State Route 291 Bike Route, Trail 203, Trail 25, Trail 204, and Trail 221, among others. The Centennial Trail itself is a major regional pathway.

While the overall loop is rated moderate and includes challenging sections, the extensive network of trails within Riverside State Park allows for shorter, less demanding loops or out-and-back options. Families can certainly enjoy easier sections of the Centennial Trail or other trails within the park, but the full loop might be challenging for younger children or those new to jogging.

Yes, there are a couple of key seasonal challenges. During spring, especially after heavy snowmelt or rains, the Deep Creek crossing can become quite difficult, with water potentially reaching knee-deep. In winter, while some sections are groomed for other activities, certain parts of the trail might be icy or snow-covered, requiring appropriate gear and caution.