Sunflower Silo – N. 39th/41st Street (Gravel) loop from Hover St & Ken Pratt Blvd

Sunflower Silo – N. 39th/41st Street (Gravel) loop from Hover St & Ken Pratt Blvd

Hard

4.8

(5673)

7,713

riders

Sunflower Silo – N. 39th/41st Street (Gravel) loop from Hover St & Ken Pratt Blvd

04:24

74.5km

500m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: September 3, 2026

Waypoints

Start point

Bus stop

Get Directions

4.96 km

Lagerman Agricultural Preserve Singletrack Trails

Highlight • Trail

Could love more on the trails with soft and dry graves, some portion has hard rocks.

Tip by

21.6 km

Sunflower Silo

Highlight • Monument

The Sunflower Silo is a well-known landmark for Boulder cyclists. Just south of the small town of Hygiene, the Sunflower Silo is along a scenic section of smooth gravel road nestled among spread out, rural farms.

Tip by

31.4 km

Lyons Redstone Museum

Highlight • Historical Site

End your ride with a frosty beverage and/or food at Oskar Blues Brewery.

Tip by

33.3 km

Heil Valley Ranch - Picture Rocks Trailhead

Highlight • Trail

The Picture Rock Trailhead is one of several trailheads that grant access to the Heil Valley Ranch Open Space that spans north-south between Boulder and Lyons. At the Picture Rock …

Tip by

53.3 km

N. 39th/41st Street (Gravel)

Highlight (Segment) • Cycleway

This scenic segment of smooth, well-graded gravel connects Oxford Road with Nelson Road. This is a great stretch of road with rolling hills and scenic views of the foothills and …

Tip by

56.9 km

Oxford Road (Gravel between 41st and Ouray)

Highlight (Segment) • Cycleway

Oxford Road is a smooth gravel road that runs east to west with many popular gravel and pavement roads intersecting it. This particular stretch of road is also a part …

Tip by

74.5 km

End point

Bus stop

Way Types & Surfaces

Way Types