The CU-Boulder Benson Earth Sciences Building is located about three blocks west of US-36 (28th Street) and Colorado Avenue in Boulder, across from Folsom Field. (See map.)

• Take I-25 North to US-36 West to Boulder.
• At the first stoplight, turn left (west) onto Colorado Ave.
• On your left will be a large parking lot where you may park your car (free on weekends).
• Continue on Colorado Ave past Regent Dr and Folsom St. On your left you will see the Mathematics Building, then the Benson Earth Sciences Building.
• Enter Benson and look for the Colorado Math Circle signs.
• If you have trouble finding us, give us a call at (303) 859-0859.

• Take I-25 South to CO-119 West toward Longmont.
• Take CO-119 South (Diagonal Highway) toward Boulder.
• In Boulder, CO-119 South turns into CO-157 South (Foothills Parkway).
• Pass Arapahoe Avenue, then take the next right turn onto Colorado Avenue.
• Pass US-36 (28th Street). On your left will be a large parking lot where you may park your car (free on weekends).
• Continue on Colorado Ave past Regent Dr and Folsom St. On your left you will see the Mathematics Building, then the Benson Earth Sciences Building.
• Enter Benson and look for the Colorado Math Circle signs.
• If you have trouble finding us, give us a call at (303) 859-0859.