Tonga Ridge Road
Tonga Ridge Road Trail is a 16 miles snow trail in Mt. Baker-Snoqualmie National Forest, Washington. The Forest Service rates it trail class 4, highly developed. It is open to snowmobile, snowshoeing and cross-country skiing.
Trail conditions, closures and hazards are not tracked here. The Mt. Baker-Snoqualmie National Forest official page carries current alerts and closure orders.
Map
One end Other endLine simplified to about 100 metres. Basemap from the USGS National Map.
| One end | 47.6726, -121.2937 · Directions ↗ |
| Other end | 47.6509, -121.1911 · Directions ↗ |
The ends are the two ends of the longest connected chain of segments. The record does not say which is the usual start.
The trail
| Length | 16 miles |
| Trail class | 4, highly developed |
| Type | snow trail |
| Surface | snow |
| Typical grade | 12-20 percent |
| Typical tread width | 18-24 inches |
| Motor vehicles | Open to at least one motorized use |
| Accessibility | Not evaluated |
| Trail numbers | 6830 |
| Forest | Mt. Baker-Snoqualmie National Forest (unit 0605) |
| States | Washington |
| Detail published | management level, with uses |
Values are the set across all segments. Class 1 is minimally developed and class 5 is fully developed. Grade and width are the forest's typical values, not measured extremes.
Allowed uses
| Snowmobile | Allowed year-round |
| Snowshoeing | Allowed year-round |
| Cross-country skiing | Allowed year-round |
A use is listed when the Forest Service records it as managed, accepted or discouraged on any segment. Discouraged still means legal. Uses marked restricted are left out. Where the forest publishes a Motor Vehicle Use Map, that map governs motorized use.
Trailheads
No season published The Necklace Valley Trail is within the Alpine Lakes Wilderness Area where wilderness regulations apply. | 0.1 mi |
Distance is from the point to the nearest part of the trail line. Season text is what the forest wrote and is often a season name rather than a date. The recreation page link goes to the Forest Service site, which may redirect to the forest's recreation index.
Camping nearby
Campsite Atlas cards carry site counts and booking links from Recreation.gov. Forest Service cards come from the recreation layer and link the agency page.
Fire nearby
- WildfireKing
15 mi from the trail midpoint · 3,298 acres · 0% contained
- WildfireGoat
18 mi from the trail midpoint · 815 acres · 41% contained
- WildfireThree Queens
19 mi from the trail midpoint · 9,558 acres · 23% contained
- WildfireLittle Giant
29 mi from the trail midpoint · 172,705 acres · 81% contained
Distance is to the reported incident point, not the fire edge. Closure orders are on the forest's official page.
Explore
Reference
Questions people ask
How long is the Tonga Ridge Road Trail?
16 miles, the sum of the 1 segment the Forest Service records under this name in Mt. Baker-Snoqualmie National Forest.
Source: Forest Service trail layer
What is allowed on the Tonga Ridge Road Trail?
snowmobile, snowshoeing and cross-country skiing. The trail is open to at least one motorized use.
Source: Forest Service trail layer
Where does the Tonga Ridge Road Trail start?
The line begins at 47.6726, -121.2937 and ends at 47.6509, -121.1911. The nearest recorded trailhead is Necklace Valley Trailhead, 0.1 miles from the line. The record does not say which end is the usual start.
Source: Forest Service trail layer
Is the Tonga Ridge Road Trail in a wilderness area?
No. The trail line does not cross any polygon in the National Wilderness Preservation System layer.
Source: Wilderness Connect
Where can I camp near the Tonga Ridge Road Trail?
Beckler River Campground (4 mi) and Miller River Group Camp (4.9 mi) are within five miles of the trail. Site counts and booking links are on Campsite Atlas.
Source: Campsite Atlas
How developed is the Tonga Ridge Road Trail?
Trail class 4, which the Forest Service describes as highly developed. Class 1 is a minimal, unimproved route and class 5 is fully developed, often paved.
Source: Forest Service trail layer
How steep and how wide is the Tonga Ridge Road Trail?
The typical grade is 12-20 percent. The typical tread is 18-24 inches wide.
Source: Forest Service trail layer
Who manages the Tonga Ridge Road Trail?
Mt. Baker-Snoqualmie National Forest, Forest Service unit 0605. The trail is in Washington.
Is there a fire near the Tonga Ridge Road Trail?
4 active incidents within 50 miles of the trail midpoint as of 2026-09-17, the nearest King at 15 miles. Check the forest's closure orders before you go.
Source: Fire nearby
Source
This page is built from 1 segment named TONGA RIDGE ROAD in the Forest Service TrailNFS_Publish layer, administrative unit 0605. Wilderness overlap is tested against the National Wilderness Preservation System layer from Wilderness Connect. Trailheads and Forest Service campgrounds come from the Forest Service Recreation Opportunities layer. Data refreshed September 17, 2026. The methodology page explains how segments become trails.