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Sibley Volcanic Regional Preserve

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Recommended Routes in Sibley Volcanic Regional Preserve - 1

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Favorite Sign #1: "dark basalt dike, a feeder of lava to the crater, that cuts through a sequence of tuffbreccias (grayish brown) and pebbly mudstones (light gray), inside and near the crater bottom."
Intermediate Intermediate

Educational Loop

4.3 mi 6.9 km 622' Up 189.54 m Up 621' Down 189.4 m Down

Orinda, CA
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Sibley Volcanic Regional Preserve Running

  • 7 Miles 11 Kilometers of Trail
  • 1 Recommended Route
  • 3 Easy Trails Easy Trails
  • 5 Intermediate Trails Intermediate Trails
  • 1 Difficult Trail Difficult Trails
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Trails in Sibley Volcanic Regional Preserve - 8

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1.0 mi 1.6 km #1Volcanic Trail
Easy Easy
Orinda, CA
Easy Easy
Orinda, CA
1.5 mi 2.5 km #2Round Top Loop Trail
Intermediate Intermediate
Orinda, CA
Intermediate Intermediate
Orinda, CA
0.6 mi 1.0 km #3Quarry Trail
Easy Easy
Orinda, CA
Easy Easy
Orinda, CA
0.4 mi 0.7 km #4Pond Trail
Intermediate Intermediate
Orinda, CA
Intermediate Intermediate
Orinda, CA
0.1 mi 0.2 km #5Water Tower Spur Trail
Easy Easy
Orinda, CA
Easy Easy
Orinda, CA
1.4 mi 2.2 km #6Skyline Trail: Sibley - Huckleberry
Difficult Difficult
Orinda, CA
Difficult Difficult
Orinda, CA
0.9 mi 1.5 km #7Skyline Trail: Sibley - Old Tunnel Road
Intermediate Intermediate
Orinda, CA
Intermediate Intermediate
Orinda, CA
1.1 mi 1.7 km #8Skyline Trai: Old Tunnel Rd - Fish Ranch Rd
Intermediate Intermediate
Orinda, CA
Intermediate Intermediate
Orinda, CA

Photos of Sibley Volcanic Regional Preserve - 18

Trail Run Project is built by runners like you. Add Your Photos

Sign #1: "dark basalt dike, a feeder of lava to the crater, that cuts through a sequence of tuffbreccias (grayish brown) and pebbly mudstones (light gray), inside and near the crater bottom."
Jun 3, 2018 near Orinda, CA
View from the Water Tank
Jun 3, 2018 near Orinda, CA
Sign #11: Siesta Valley
Jun 3, 2018 near Orinda, CA
Sign #8: "This huge, reddish-brown block of lava fell from the cliffs to the upper right. The lava cooled and hardened while it was still moving, resulting in dramatic fragmentation, known as "autobrecciation" (self broken)."
Jun 3, 2018 near Orinda, CA
Sibley Volcanic Regional Preserve
Jun 11, 2018 near Orinda, CA
Fog burning off over the hills.
Jul 21, 2019 near Orinda, CA
Mount Diablo view
Nov 28, 2020 near Orinda, CA
Down to the stone maze
Nov 28, 2020 near Orinda, CA
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