History and character
Mammoth Dunes is the second eighteen at the Sand Valley resort in central Wisconsin, designed by David McLay Kidd and opened in 2018 on the same ancient glacial-sand terrain that defines the property. After his demanding early work, Kidd built Mammoth Dunes as a deliberate celebration of fun and playability — vast fairways, gentle ground contours that feed errant shots back toward the short grass, and greens that welcome the running approach. The scale is enormous, the name well earned, with towering dunes, sandy waste, and big skies framing every hole. It is the more forgiving, joyful counterpoint to the strategic Sand Valley course next door, the kind of layout where a wide-eyed first-timer and a scratch player can both have the round of their lives.
The round and signature holes
Mammoth Dunes is defined by its sheer width and its generosity off the tee, inviting golfers to swing freely and chase the ball into receptive fairways. The drivable par-four 14th is its most talked-about hole, a tempting risk-reward shot toward a green tucked among the dunes that can yield an eagle or a disaster depending on nerve and execution. The course's contours are designed to reward the running game and keep big numbers at bay, making it a pure pleasure to walk and play. Despite the forgiveness, the dunes, waste areas, and wind keep it interesting, and the huge greens still demand thoughtful lag putting. It is golf built to be enjoyed rather than survived.
When to go and how to get on
Mammoth Dunes plays best from May through October, with peak conditions and warm weather June through September and a frequently ideal window in early fall when crowds thin and the fescue glows golden. Spring can be cool and windy, late October risks frost, and the resort shuts for the Wisconsin winter. Sand Valley is a public golf resort open to outside play, but staying at the lodge unlocks the best tee times, the best rates, and the smoothest multi-course itinerary; reserve stay-and-play packages well ahead in summer. Walking with a caddie is the default and most rewarding way to experience the course.
Who it is for and pairings
Mammoth Dunes is for the golfer who wants width, fun, and a confidence boost, making it the perfect complement to the more strategic Sand Valley course on the same property, along with the Sandbox par-three course and the restored Lido. It belongs on the modern sand circuit alongside Bandon Dunes, Streamsong, and Wisconsin neighbors Erin Hills and Whistling Straits. It is an excellent choice for mixed-ability buddies trips, where stronger and weaker players can enjoy the same generous course together. Remote in central Wisconsin, it is best treated as part of a self-contained resort week rather than a quick day trip.