Any time's a great time to get outdoors to explore our beautiful state. You just have to know where to look. Here are 10 adventurous places in Maryland that are definitely bucket list-worthy. They include epic hiking trails, picturesque state parks, and a sprawling wildlife refuge.

1. Appalachian Trail

Forty miles of the Appalachian Trail, which travels from Maine to Georgia, are in Maryland. You can spend four to five days exploring the entire Maryland portion or choose a length perfect for a day trip here. The trail includes several scenic views, including the pictured Black Rock Cliffs.

2. The East Coast Greenway

The East Coast Greenway connects cities and towns from Maine to Florida. The Maryland portion is 166 miles long, with a third of it being off-road trails. Adventurous hikers and cyclists can find more information here.

3. Rock Climb at Carderock

Part of the Chesapeake and Ohio National Historic Park, Carderock is a great place for rock climbing and bouldering. The rock has a variety of features and heights, perfect for climbers of all abilities. Check it out here.

4. Patapsco Valley State Park

With over 16,000 acres, there's plenty to discover at Patapsco Valley State Park. Ride your bike or hike while exploring waterfalls, bridges, viaducts, trails, and so much more. If one day simply isn't enough for your visit, plan a camping adventure for a few nights or more.

5. The C & O Canal

With a total distance of 184 miles long, there are sure to be plenty of interesting spots on the canal perfect for exploring. You can hike or bike just some of the path or the entire trail. Plan your trip here.

6. Great Allegheny Passage

At the tail-end of the C & O Canal, you'll find the Great Allegheny Passage. Starting near Cumberland, it stretches all the way to Pittsburgh, PA. It's full of old bridges, tunnels, and gorgeous woodland sights. You can find more information here to start planning your journey.

7. Battle Creek Cypress Swamp

The wetland boardwalk allows you to explore the cypress swamp while staying dry. This is a unique spot, indeed, for hiking, wildlife watching, and birdwatching. You might even want to take a picnic along. Check out the website here.

8. Blackwater National Wildlife Refuge

Blackwater National Wildlife Refuge has several ways to explore their 27,000 acres including by land or water. You'll witness an abundance of wildlife among this serene refuge, that you won't soon forget. The wildlife refuge has a Visitors Center and, outdoors, you'll find walking paths and a butterfly garden.

9. Swallow Falls State Park

Most people visit Swallow Falls State Park for the waterfalls, but not everyone knows that the park is actually 257 acres. With so much to see and do, you could easily make it a multi-day camping trip.

10. Western Maryland Rail Trail

Starting in Hancock, you can find the Western Maryland Rail Trail. With 21 miles of paved trail, this location is great for running, cycling, or simply taking in the sights of nature.

Now put on your exploring hat and get going to one of these 10 adventurous places in Maryland.  What else would you add to the list? Let us know in the comments! On the lookout for fun day trips? Here are 11 very best day trips in Maryland.