Hardrock and Osborn Hills Loop Trail

MODERATE 55 reviews

Hardrock and Osborn Hills Loop Trail is a 3.8 mile moderately trafficked loop trail located near Grass Valley, California that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

DISTANCE
3.8 miles
ELEVATION GAIN
472 feet
ROUTE TYPE
Loop

dogs on leash

kid friendly

birding

hiking

nature trips

trail running

walking

forest

views

wild flowers

wildlife

Walk around Empire Mine State Historic Park and explore several smaller abandoned mines and 100 years of mining history Welcome to Empire Mine State Historic Park, home to Empire Mine, which was once the most profitable gold mine in California during the gold rush. This hike will take you around the Empire Mine site and past several smaller mines which were all eventually absorbed as part of the large mining operation at Empire Mine. Along this hike you will see old foundations and rusted machinery covering 100 years of hardrock mining history.

hiking
9 days ago

hiking
17 days ago

hiking
24 days ago

Good morning hike. Easy to navigate. Worked up a nice sweat.

hiking
1 month ago

1 month ago

1 month ago

1 month ago

1 month ago

2 months ago

My whole family loved it. Our little army ranges in age from 8 to 40 years old. Easy and fun for all.

2 months ago

hiking
2 months ago

Right next to my house and one of my regular hike/walks. Lot's of little off shoots. My doggie Chloe always loved it. ♡

walking
3 months ago

Hardrock trail started out nice but the last mile is along the main road, no bueno.

hiking
3 months ago

hiking
3 months ago

It's was fun lot of people using the trail, not to hard of a walk

4 months ago

4 months ago

hiking
5 months ago

What a great day. Hiked with good friends after enjoying a wonderful lunch at one of the many shaded picnic tables. I will definitely be doing this one again.
Has just enough traffic so a lone hiker will feel safe. Park has easy to follow signs and more than one trail to choose from.
A definite 5 rating!!!!

5 months ago

Great spot. Love being around Empire Mine.