If you've already worked your way through the Arizona day-hike checklist, this is the list for what comes next. We ranked the state's hardest trails using a composite of difficulty tag (hard or expert), distance, and elevation gain, drawing from the 9,083 mapped Arizona trails in our database. These ten routes are reserved for hikers with the gear, the navigation skills, and the honesty about their own limits to tackle them safely.
Arizona ranges from the Sonoran Desert's saguaro forests at 1,000 feet to the alpine spruce-fir of the San Francisco Peaks at over 12,000 feet, with the Grand Canyon as the dominant geological feature. The R2R2R Grand Canyon traverse, Humphreys Peak, and the most exposed Superstition routes are Arizona's elite tests. Heat is the #1 killer here — exposed desert trails routinely exceed 110°F in summer, and Grand Canyon rescue stats reflect underestimated water needs.
Our rankings here are data-driven — pulled from the 9,083 mapped entries OutsideAtlas tracks in Arizona — but the data has limits worth being honest about. A composite score weights expert and hard difficulty tags alongside total mileage and elevation gain. The result favors long, vertically aggressive routes with documented technical sections — there are surely tougher off-trail objectives in the state, but those are outside the scope of a trail directory.
The Ranking
Ranked from #1 to #10. Click through any entry for the full trail page — map, elevation profile, weather forecast, and direct OpenStreetMap source link.
#1. Alder Pack Trail
Alder Pack Trail sits near Tortilla Flat in Maricopa County and is rated expert — our pick for the toughest trail on the list. Expect dirt surface on a expert-only grade. Local trail-association reports tend to agree this is one of the better-maintained options in the area, which matters more on a hike of this length than on a quick walk. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Alder Pack Trail trail page →Map, elevation profile, current weather, and OSM source.#2. Baker Canyon Trail #225
Baker Canyon Trail #225 sits near Rodeo in Cochise County and is rated expert — the #2 entry in a roster of hikes you don't take lightly. Tagged expert in OpenStreetMap. The route is well documented in OpenStreetMap, which is what put it on our radar — community-mapped routes tend to be the ones that get hiked enough to stay open. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Baker Canyon Trail #225 trail page →Map, elevation profile, current weather, and OSM source.#3. Battleship Mountain scramble
Battleship Mountain scramble sits near Tortilla Flat in Maricopa County and is rated expert — the #3 entry in a roster of hikes you don't take lightly. Expect ground surface on a expert-only grade. It earns its ranking on the data, but trail conditions can change quickly after storms or fire seasons, so verify before you commit a full day. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Battleship Mountain scramble trail page →Map, elevation profile, current weather, and OSM source.#4. Battleship Mountain scramble
Battleship Mountain scramble sits near Tortilla Flat in Maricopa County and is rated expert — the #4 entry in a roster of hikes you don't take lightly. Expect ground surface on a expert-only grade. Compared to similar trails in Arizona, this route trades difficulty for either solitude or scenery — sometimes both. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Battleship Mountain scramble trail page →Map, elevation profile, current weather, and OSM source.#5. Black Canyon
Black Canyon sits near Bard in Yuma County and is rated expert — the #5 entry in a roster of hikes you don't take lightly. Expect dirt surface on a expert-only grade. What makes this one earn its spot on the list is the combination of mapped detail and the kind of through-and-through experience that justifies a longer drive. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Black Canyon trail page →Map, elevation profile, current weather, and OSM source.#6. Blue Dot Trail
Blue Dot Trail sits near Flagstaff in Coconino County and is rated expert — the #6 entry in a roster of hikes you don't take lightly. Expect ground surface on a expert-only grade. Local trail-association reports tend to agree this is one of the better-maintained options in the area, which matters more on a hike of this length than on a quick walk. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Blue Dot Trail trail page →Map, elevation profile, current weather, and OSM source.#7. Bright Angel Campground Route
Bright Angel Campground Route sits near Grand Canyon in Coconino County and is rated expert — the #7 entry in a roster of hikes you don't take lightly. Tagged expert in OpenStreetMap. The route is well documented in OpenStreetMap, which is what put it on our radar — community-mapped routes tend to be the ones that get hiked enough to stay open. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Bright Angel Campground Route trail page →Map, elevation profile, current weather, and OSM source.#8. Bright Angel Campground Route
Bright Angel Campground Route sits near Grand Canyon in Coconino County and is rated expert — the #8 entry in a roster of hikes you don't take lightly. Tagged expert in OpenStreetMap. It earns its ranking on the data, but trail conditions can change quickly after storms or fire seasons, so verify before you commit a full day. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Bright Angel Campground Route trail page →Map, elevation profile, current weather, and OSM source.#9. Bright Angel Campground Route
Bright Angel Campground Route sits near Grand Canyon in Coconino County and is rated expert — the #9 entry in a roster of hikes you don't take lightly. Tagged expert in OpenStreetMap. Compared to similar trails in Arizona, this route trades difficulty for either solitude or scenery — sometimes both. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Bright Angel Campground Route trail page →Map, elevation profile, current weather, and OSM source.#10. Bright Angel Point Trail
Bright Angel Point Trail sits near Grand Canyon in Coconino County and is rated expert — the #10 entry in a roster of hikes you don't take lightly. Expect paved surface on a expert-only grade. What makes this one earn its spot on the list is the combination of mapped detail and the kind of through-and-through experience that justifies a longer drive. A paved surface makes this one of the more accessible options on the list — good for strollers, mobility aids, and wet-weather days. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Bright Angel Point Trail trail page →Map, elevation profile, current weather, and OSM source.Planning your Arizona trip
A few pieces of context are worth keeping in mind specifically for Arizona. Low desert (Phoenix, Tucson) is best November-March; high country (Flagstaff, Grand Canyon rim) is best May-October. Heat is the #1 killer here — exposed desert trails routinely exceed 110°F in summer, and Grand Canyon rescue stats reflect underestimated water needs.
Always cross-reference the official land-manager page before driving out — closures, fire restrictions, and seasonal road access can change quickly. Our trail pages link directly back to the OpenStreetMap source so you can see the tags we're working from.
If you're new to hiking generally, our beginner's guide covers footwear, layering, and the day-pack basics. For safety planning on bigger objectives, the ten essentials guide is worth twenty minutes of reading.
More Arizona hiking guides
If you found this useful, the rest of our Arizona coverage continues below.
- Top 10 longest trails in Arizona — Multi-day routes and through-hikes ranked by distance.
- Steepest trails in Arizona — Hikes with the most elevation gain in the state.
- Best beginner hikes in Arizona — Easy, well-marked trails for first-time hikers.
- Best national parks in Arizona — Federal parks and recreation areas ranked.
- Best waterfall hikes in Arizona — Trails leading to named falls, ranked by accessibility.
- Best dog-friendly hikes in Arizona — Where leashed dogs are explicitly welcome.
- Best family hikes in Arizona — Short, easy trails sized for kids and grandparents.
Rankings like this are starting points, not verdicts. Trail conditions change, new routes get tagged, and what was the toughest trail in Arizona last year might not be next year. We refresh these articles when the underlying data shifts meaningfully.
Got a correction, a route we missed, or a question? Drop us a note via the contact page. We read every email and we'd rather hear it from you than miss it.
