Thornewood Open Space Preserve (Closed Area)
Thornewood Open Space Preserve (Closed Area)
The best running trails in Thornewood Open Space Preserve (Closed Area)
4.9
(13)
1,260
runners
52
runs
Last updated: October 19, 2025
35
runners
1. Bear Gulch Trail (Meadow) loop from Woodside
16.0km
02:13
570m
570m
Expert run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
6
runners
2. Running loop from Woodside
5.10km
00:43
200m
190m
Intermediate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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7
runners
3. Borel Hill loop from Portola Valley
28.5km
03:44
770m
770m
Expert run. Very good fitness required. Sure-footedness, sturdy shoes and alpine experience required.
26
runners
4. Running loop from Portola Valley
8.23km
01:03
170m
170m
Intermediate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
runners
5. Running loop from Portola Valley
5.51km
00:40
100m
100m
Intermediate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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