By Daniel Kovacs | Summit County Real Estate
Is Commuting Realistic?
The question comes up in almost every buyer consultation: "Can I live in Summit County and commute to Denver?" The answer depends on your work schedule, your tolerance for winter driving, and how many days per week you need to be in an office. Daily commuting is not practical for most people. But with hybrid work arrangements, hundreds of Summit County residents make the trip two to three times per week and consider it a worthwhile trade for mountain living.
Since 2020, the number of Summit County households with at least one Denver-commuting adult has grown by an estimated 25 to 30 percent. Remote work opened the door, and hybrid schedules keep it open. The people who make this work share a few common traits: flexible employers, disciplined departure times, and a winter driving skill set.
The I-70 Corridor: Distance and Drive Time
From Silverthorne (the easternmost Summit County town) to downtown Denver, the distance is roughly 68 miles via I-70. From Breckenridge, add another 10 miles. From Copper Mountain, the total is about 80 miles. Under ideal conditions with no traffic or weather delays, the drive takes 1 hour and 20 minutes from Silverthorne and 1 hour and 35 minutes from Breckenridge.
Real-world times vary significantly. On a typical Tuesday morning departing Silverthorne at 6:45 AM, expect 1 hour and 30 minutes to downtown Denver. Departing at 8:00 AM adds 15 to 30 minutes due to merge traffic near the Eisenhower Tunnel and congestion through Idaho Springs. On a Friday afternoon heading westbound, the same trip can take 2.5 to 3.5 hours during ski season. During major winter storms, I-70 closures can strand drivers for 4 to 8 hours or force overnight stays on the Front Range.
The Eisenhower Tunnel
The Eisenhower-Johnson Memorial Tunnel at 11,158 feet is the highest vehicle tunnel in the world and the chokepoint of the I-70 corridor. Traffic funnels from four lanes to two in each direction. During peak periods, the backup on the westbound approach can extend 5 to 10 miles. Eastbound morning commuters generally pass through with minimal delay on weekdays, making the morning commute to Denver smoother than the return trip.
Traffic Patterns to Know
Weekday Patterns
Eastbound (toward Denver) traffic is lightest before 7:00 AM on weekdays. The morning rush builds between 7:30 and 9:00 AM, primarily from construction workers and delivery vehicles heading to the Front Range. Westbound (toward Summit County) traffic peaks between 4:00 and 6:30 PM as Denver commuters return. On weekdays outside of ski season, the commute is predictable and manageable.
Weekend and Holiday Patterns
Weekends during ski season (December through April) are when I-70 earns its reputation. Westbound traffic on Friday afternoons and Saturday mornings can add 1 to 3 hours to the trip. Eastbound traffic on Sunday afternoons between 1:00 and 5:00 PM is the worst window of the entire week. Holiday weekends (Martin Luther King Jr., Presidents' Day, Spring Break) push travel times to 4 hours or more. If you commute on a hybrid schedule, avoid scheduling Denver office days on Fridays and Mondays during ski season.
Winter Driving Conditions
I-70 crosses two mountain passes (Vail Pass at 10,662 feet and the Eisenhower Tunnel at 11,158 feet). Between November and April, CDOT enforces traction laws that may require snow tires, chains, or AWD/4WD. The traction law has three levels: Code 15 (adequate tires required, minimum 3/16 inch tread), Code 16 (chains or snow tires required on all vehicles), and Code 18 (chains required on all vehicles, including AWD/4WD). I-70 is fully closed during severe storms, typically 5 to 10 times per winter season for durations ranging from 2 hours to a full day.
Essential winter gear for commuters includes a proper set of dedicated snow tires (not all-seasons), an emergency kit with blankets, water, snacks, and a phone charger, traction devices or chains that fit your vehicle, and a full tank of gas before every westbound trip. Many commuters keep a packed overnight bag in the car during winter months in case I-70 closes and they need to stay in Denver. If you want to understand more about what winter demands from homeowners, see our winter maintenance guide.
CDOT Resources and Apps
Regular commuters rely on several tools for real-time conditions. The CDOT COtrip website and its companion app (free, available for iOS and Android) show live traffic speeds, road closures, and traction law status across the entire I-70 corridor. CDOT's variable message signs along I-70 display estimated travel times between key points. The GoI70 website provides travel time estimates and suggests departure windows. CDOT also operates the Eastbound Mountain Express Lane (MEXL) between Empire and Idaho Springs, a tolled lane that runs $3 to $30 depending on congestion, shaving 15 to 30 minutes off the eastbound trip during peak periods.
Bustang Bus Service
CDOT's Bustang West Line runs between Frisco and Denver's Union Station, with stops in Silverthorne and Idaho Springs. The fare is approximately $14 one way. The bus uses the express lane and HOV access when available, often making better time than solo drivers during peak traffic. The schedule offers 4 to 5 departures per day on weekdays. For commuters heading to downtown Denver, Bustang eliminates the stress of driving, the cost of downtown parking ($15 to $25 per day), and the wear on your vehicle. The downside is limited schedule flexibility: if your meeting runs late, you may miss the last return bus.
Best Towns for Commuters
Silverthorne
Silverthorne sits directly at the I-70 interchange and offers the shortest drive to Denver. It also has the most affordable housing in Summit County, with median home prices around $750,000 to $850,000 for a single-family home. The Silverthorne area offers quick access to the highway without navigating secondary roads. Learn more in our Silverthorne area guide.
Frisco
Frisco adds 5 minutes to the Denver commute compared to Silverthorne but offers a walkable Main Street, the Frisco Bay Marina on Lake Dillon, and a strong sense of community. Many hybrid commuters prefer Frisco for its livability on the days they work from home. The Bustang stop at Frisco Transfer Center makes car-free commuting feasible.
Dillon
Dillon sits between Silverthorne and Frisco with easy I-70 access. Condo prices start lower than in Frisco or Breckenridge, making it an affordable entry point for buyers who want a Summit County address without a Breckenridge price tag.
Tips from Experienced Commuters
After years of working with buyers who commute, here are the patterns that work. Leave for Denver before 7:00 AM or after 9:30 AM to avoid the morning merge at the tunnel. Return from Denver before 3:00 PM or after 7:00 PM to skip westbound congestion. Schedule Denver office days on Tuesday, Wednesday, and Thursday, never Friday or Monday during ski season. Keep your vehicle maintained with winter tires from October 15 through April 30. Build a relationship with a Denver-based colleague who can lend a couch during storm closures. If you are weighing this decision alongside the financial side, our buying guide covers how to factor commuting costs into your home purchase budget.