All Trails

Mount Si

North Bend, WA · 47.488, -121.724

The most hiked trail in Washington state. 8 miles round trip with 3,150 ft gain through old-growth forest. Optional Class 3 haystack scramble at top.

ModeratePacific NW3,900 ftForestScrambleSummitSummit views

Mount Si

⛅ Overcast

Good to Go
54°
Feels 54°FSummit · 3,900 ft
5:12 AM8:58 PM
CLEAR

Wind

1mph

Precip

0%

Humid

72%

Elev Δ

+3200ft

12-Hour Temp Trend

50°65°

Hourly Forecast

3 PM

⛅

63°

3mph

4 PM

⛅

65°

4mph

5 PM

⛅

65°

5mph

6 PM

⛅

65°

5mph

7 PM

⛅

63°

5mph

8 PM

⛅

61°

3mph

9 PM

☀️

58°

3mph

10 PM

⛅

54°

2mph

11 PM

⛅

53°

2mph

12 AM

⛅

53°

0mph

1 AM

☀️

50°

5mph

2 AM

⛅

50°

4mph

Summit Conditions

63°F→−9°→54°F

Wet lapse rate: 2.7°F/1,000ft · 3,150 ft gain

◎L1
Synthetic/merino blend long sleeve

150g merino or synthetic blend for moisture management

◉L2
Light fleece or vestPACK

Microfleece pullover — pack it, don't wear it at the trailhead

Summit Pack List

↟Light fleece↟Wind shell

Start Cold Tip

Start in just your base layer — you'll warm up within 10 minutes on the trail. Keep your fleece accessible in the top of your pack for the summit.

Trail Guide

Updated 2:59:07 PM · America/Los_Angeles

Updated Jun 4, 2:59 PM UTC

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