MTB opportunities expand near the newest US national park Publications Trail Construction If you’re planning to visit the New River Gorge — America’s newest national park — be sure to bring your mountain bike. While the New River Gorge is already one of the only national parks in the US to offer mountain bike-legal singletrack thanks to pre-existing trails on land incorporated into the new National Park, nearby mountain biking opportunities are expanding thanks to the ongoing massive investment in mountain bike trails in West Virginia.