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Williams Mountains Traverse — 5 ranked 13ers (Sawatch / Hunter-Fryingpan Wilderness)

At a glance — recommended day

14.7 mi · 6,084 ft gain · Class 3 · 5 peaks · ~3.8 h drive

Researched: 2026-06-15

NOAA weather link: Williams Mountains Traverse Weather

CalTopo research map: https://caltopo.com/m/310E34A

Status in DB: all five unclimbed.

The full Williams Mountains sub-range ridge, W of Independence Pass — not to be confused with Williams Peak. All five ranked summits in one outing.

Overview map

Note: the recommended route was distilled from 7 recorded GPS tracks of real trips (14ers.com · ListsofJohn · peakbagger) — all layered on the interactive CalTopo research map.

Other climbers: Emily Sharpe — not yet · Shawn D Keil — not yet

Peaks covered

Williams Mtn (HP) Williams Mtn North Williams Mtn South A Williams Mtn South B Williams Mtn South C
Your label — 13139 Williams Mtn South 13204 13039
Elevation 13,390' 13,139' 13,321' 13,204' 13,039'
Lat / Lon 39.1806, −106.6101 39.1915, −106.6060 39.1674, −106.6324 39.1739, −106.6154 39.1480, −106.6417
Class 3 2 2 2+ 2
CO Rank 329 538 377 489 614
Also known as "Williams Mtns HP" UN 13,139 "Williams Benchmark" UN 13,203 UN 13,039 (was UN 13,033)
14ers.com 10756 10815 10766 10800 10832
LoJ 411 705 474 609 789
peakbagger 16642 84732 16235 15859 84726
Peak DB id 411 705 474 609 789

The five form a ~3.5 mi N→S ridge: North (13,139) → Williams Mtn (13,390, HP) → South B (13,204) → South A (13,321) → South C (13,039), all in the Hunter-Fryingpan Wilderness (White River NF).

A full-traverse loop that follows Heather Ryan's recorded all-five line from the Lost Man TH over every summit and back — consistent with the recorded full-traverse TR (LoJ TR 2019: ~13.9 mi / ~5,700′).
Peaks all five Williams summits
Class 3 — mostly Class 2/2+ tundra & talus, with brief Class 3 scrambles and short knife-edge ridge sections on the connecting ridges (TR 2019). Ice axe recommended.
Trailhead Lost Man TH (~10,500'), Hwy 82 W of Independence Pass — passenger car
Style a long single day or a 2–3 day backpack (camp at South Fork Pass) — both are standard

Route sequence (composed loop)

  1. From the Lost Man TH, hike N past Lost Man Reservoir and up the Lost Man trail toward South Fork Pass (11,840′) (~4.5 mi).
  2. Gain the crest and go to Williams Mtn North (13,139') (north end).
  3. Traverse S over Williams Mtn (13,390', the high point) — the Class 3 scrambling is on its connecting north ridge.
  4. Continue S over South B (13,204') → South A (13,321', "Williams Benchmark") → South C (13,039').
  5. Descend SE off South C back to the Lost Man trail and out to the TH, closing the loop.

Per-summit difficulty (climb13ers / TR): South C is an easy Class 2 ridge walk; South B has Class 2+ ridge problems; Williams North is easy Class 2 except near the low point of the connecting ridge; Williams Mtn (HP) is the Class 3 crux ("Class 2+ with a smattering of brief Class 3 scrambles along its north ridge"). The traverse also has short knife-edge sections — it's a scramble, not a tundra walk.

Getting there — Lost Man TH
Drive from Boulder ~3h 45m via Google Maps — via Leadville → Twin Lakes → CO-82 over Independence Pass → down ~4 mi to the Lost Man TH.
⚠️ Seasonal Independence Pass (CO-82) is closed in winter (typically early-November to late-May). Plan for June–October access.
Trailhead Lost Man TH, ~39.1219, −106.6242, ~10,500' — passenger car; the Lost Man Reservoir / upper Lost Man TH on the Aspen side of the pass.
Land Hunter-Fryingpan Wilderness (White River NF) — no permits/fees, foot travel only; dispersed/backpack camping allowed (South Fork Pass is the standard camp).

Gear & season

  • Best window: July–September (Independence Pass gate dictates the shoulders; high, exposed ridge holds snow late).
  • Terrain: Class 2/2+ with Class 3 scrambling and short knife-edge ridge sections — committing once you're on the traverse. Ice axe recommended for early-season snow on the connecting ridges.
  • Storms: a long, fully-exposed ridge — very early start; the backpack option lets you start high and beat the weather.
  • Escape: few easy bail points mid-ridge; commit only with a good forecast.

Cell coverage:

  • 14ers.com community DB: no reception reports for these summits.
  • Geographic reasoning: deep in the Hunter-Fryingpan — treat as dead at the TH and on the ridge (some signal possible toward the Aspen/Hwy 82 corridor from the high points).
  • Recommendation: carry an InReach / satellite messenger — long, committing, remote.

Trip reports & GPX (all sources)

Sources confirmed logged in: 14ers.com ("letsgocu"), listsofjohn.com, peakbagger.com (Kyle Knutson). 2 full-traverse 14ers-library tracks + Kyle's CalTopo track are layered on the CalTopo map; the recommended loop — Heather Ryan's recorded full traverse — is drawn over them in magenta.

listsofjohn.com (logged in)

GPX Note
TR 2019 all five — ~13.9 mi / ~5,700′, Class 2 + Class 3 knife-edge sections ⭐
TR 26943 all five (from a South Fork Pass camp)

14ers.com GPX library (logged in, "letsgocu")

Two recorded full-traverse tracks (one 12,894-pt high-detail) — both layered.

peakbagger.com (logged in, "Kyle Knutson")

Pages verified for all five; ownership = Hunter-Fryingpan Wilderness (White River NF). No downloadable ascent GPX for these.

climb13ers.com

Per-summit route pages: Williams Mountain (North Ridge, Class 3) · Williams Benchmark / South A · South B · North. climb13ers: "possible to clean all summits in a long day, but many prefer a 2–3 day backpack."

Numbers note: the ~14.7 mi / ~6,084′ headline is Heather Ryan's recorded full-traverse loop (distance straight from her GPS track, gain DEM-measured), cross-checked against the recorded full-traverse TR (13.9 mi / 5,700′). GPS-<ele> gain in these tracks is noise (one logs 37,000′); climb13ers' "17.5 mi / 4,660′" is an out-and-back to just the two north peaks, not the loop.

Sources checked: 14ers.com ✓ (logged in, "letsgocu") · listsofjohn.com ✓ (logged in) · peakbagger.com ✓ (logged in, "Kyle Knutson") · climb13ers.com ✓ · Kyle's CalTopo ✓