Preheat the oven to 375°F (190°C).
In a mixing bowl, whisk together maple syrup, Dijon mustard, garlic, apple cider vinegar, and olive oil to make the glaze.
Pat the pork dry with paper towels and season with salt and black pepper.
Heat a skillet over medium-high heat and sear the pork on all sides until golden brown.
Place the pork in a roasting pan and brush generously with the maple mustard glaze.
Roast for 50-60 minutes, brushing with more glaze halfway through, until the internal temperature reaches 145°F (63°C).
Remove from the oven and let the pork rest for 10 minutes before slicing.
Serve with your choice of side dishes, drizzling any extra glaze over the top.