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Robson Grubba

Umuarama
More About Robson Drop down
Member Since
May 9, 2014
Last Visit: Nov 23, 2025
0 Points DetailsDrop down

Trail Favorites List View All 15

20.3 mi 32.6 km Mountains to Sea Trail
Easy/Intermediate Easy/Intermediate
North Tustin, CA
Easy/Intermediate Easy/Intermediate
North Tustin, CA 10 
5.5 mi 8.8 km Old CC Spur #2N57
Intermediate Intermediate
Fontana, CA
Intermediate Intermediate
Fontana, CA 3 
5.4 mi 8.6 km Skyline Drive Trail
Intermediate Intermediate
Corona, CA
Intermediate Intermediate
Corona, CA 16 
15.4 mi 24.7 km Blackstar
Intermediate Intermediate
Foothill Ranch, CA
Intermediate Intermediate
Foothill Ranch, CA 23 
5.6 mi 9.0 km Anaheim Hills Park Trail Loop
Easy/Intermediate Easy/Intermediate
Villa Park, CA
Easy/Intermediate Easy/Intermediate
Villa Park, CA 5 

Check-Ins View All 13

Weir Canyon Trail: Weir Canyon Rd to Oak Canyon Dr
Intermediate Intermediate
Yorba Linda, CA May 17, 2023
Weir Canyon Trail: Weir Canyon Rd to Oak Canyon Dr Yorba Linda, CA
Intermediate Intermediate
May 17, 2023
Country Trail
Easy Easy
Yorba Linda, CA May 17, 2023
Country Trail Yorba Linda, CA
Easy Easy
May 17, 2023
Weir Canyon Trail: Back Door
Intermediate/Difficult Intermediate/Difficult
Villa Park, CA May 17, 2023
Weir Canyon Trail: Back Door Villa Park, CA
Intermediate/Difficult Intermediate/Difficult
May 17, 2023

Where Robson Bikes

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