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Supply Trail
Located within the Upcountry Maui & Haleakala Region on Maui
Guide Snapshot
A quick fit check before you commit to this trail.
Difficulty
Challenging
Distance
About 7 miles round trip
Estimated time
3-5 hours
Elevation & terrain
Steep subalpine climb to Halemauu connection
Family fit
Experienced hikers
Highlights
Haleakala · Birding · Workout
Haleakala National Park Hiking Trails
Haleakala Summit Area
If you’re visiting Haleakala National Park and want a great hike with beautiful views of North Maui, the Haleakala crater, and the chance to observe local Hawaiian plants and wildlife, the Supply Trail offers just what you’re looking for.
Supply Trail starts on the road that leads to Hosmer Grove Trail. Start off by parking your car in the Hosmer Grove campground, where you’ll find a few parking spots along the road. From there, walk back along the road to the trailhead sign. Note that we have heard from folks who say there is no sign here; however, we were lucky enough to spot one on our last hike. If you don’t see one, you’ll still be able to distinguish the trail as you leave the paved road and head into the open field.
Trail day tools
Before you drive to the trailhead, check the trail and weather layer.
Hawaii hikes can change quickly with closures, rain, mud, heat, and daylight.
You’ll be trekking through native subalpine shrubland that pervades this area, and some of the brush can be quite high. The trail is rather rocky and it winds up over a series of gentle swithcbacks. This is great opportunity for birdwatching, too.
The Supply Trail is fairly steeply graded from the start, but becomes even steeper as it approaches the connection with the Halemauu Trail at 3.5 miles in.
As you reach the end of the Supply Trail, head down the Halemauu Trail about ¼ mile for some simply spectacular views of Haleakala’s crater.
As with all Haleakala hikes, be sure to have adequate sun protection, as the elevation here means the sun’s rays– even on a cloudy day– are brutal. You’ll also want to have anything else you’ll need for the trail, especially if you’ll be camping. Check out our Haleakala camping packing list for more information.
Founder & certified Hawai'i travel expert with 20+ years in Hawai'i tourism, University of South Carolina climate-research training, and NOAA weather-station experience.
Trades are breezy right now with scattered showers on the windward side and mountains; the leeward coast stays mostly dry. Tomorrow stays breezy with the same pattern.
A tropical disturbance southeast of the islands is likely to become a tropical storm by mid-week and approach the state Thursday through Saturday. The exact track is still uncertain. If it comes closer, expect heavier rain over a longer stretch; if it stays farther out, impacts will be shorter and lighter. Winds will increase late this week, with potential gusts over 70 miles per hour on the highest summits.
Plan your leeward beach time and snorkeling for today through Tuesday. Save summit drives and offshore water sports for after Saturday, and check updates daily as this develops.
0:000:53
Voice
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Trade winds are pushing across Maui right now and staying breezy through tomorrow. Windward slopes and peaks will see scattered showers; the leeward side stays mostly dry. Rough seas mean a Small Craft Advisory is in effect through Tuesday evening.
A tropical disturbance southeast of the islands is likely to become a tropical storm by mid-week and approach the state Thursday through Saturday. The track remains uncertain. Late this week, winds will increase across Maui, with summit gusts potentially exceeding 70 mph on Haleakala. The Big Island—especially Hilo and Puna—faces the highest risk of heavy rain and flooding if the storm tracks close.
Leeward beaches and snorkeling work best today through Tuesday. Avoid summit hikes and offshore water sports Thursday through Saturday.
0:000:55
Voice
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Trades are kicking today with moderate wind and rough seas. Windward slopes will see scattered showers; the leeward side stays mostly dry. A Small Craft Advisory is in effect through Tuesday evening.
A tropical disturbance southeast of the islands is likely to become a tropical storm by mid-week and approach the state Thursday through Saturday. The track remains uncertain, but the Big Island faces the highest risk of heavy rain and flooding, especially in the Hilo and Puna areas. Summit winds could exceed 70 mph late in the week. Check forecasts daily as the situation develops.
Leeward snorkeling and beach time work well through Tuesday. Save summit drives and windward hikes for today or tomorrow, and avoid offshore water sports and high elevations Thursday through Saturday.
0:000:58
Voice
Read the transcript
Trades are steady now with scattered showers on the windward side and ridges; the leeward coast stays mostly dry. Through Tuesday it stays breezy with rough seas around Maui and the Big Island, where a Small Craft Advisory is in effect through Tuesday evening.
A tropical disturbance southeast of the islands is likely to become a tropical storm by mid-week and approach the state Thursday through Saturday. The exact track is uncertain. Winds will increase across the eastern islands late this week, with potential for summit gusts over 70 mph on Maui and the Big Island if the storm intensifies.
Get your beach and snorkel time in today and tomorrow on the leeward coast. Avoid summit hikes and offshore water sports Thursday through Saturday as conditions deteriorate. The track could shift significantly—check updates daily.
Created with AI from the official NWS forecast discussion · verify with NWS before heading out
