I will speak up since I have flown that route in an under-powered antique airplane.

In June density altitude will be less of a worry than July and August.

Fly I-80. Makes navigation easy, all of the runways across southern Wyoming are 6000-7000' long, and if you have a problem, mechanical or weather, you can land on the highway and flag down help. Towns across Wyoming, Utah, and Nevada are relatively far apart so following the highway in unfamiliar territory improves the comfort factor. I-80 also crosses the Wasatch into Utah at a relatively low point. If you try to cross farther north you will need to stagger up to a higher altitude.

When you go into one of the airports on the route, circle once overhead and look at the hills around your takeoff route. When flying at higher field elevations and density altitudes you will want to remember where the valleys go so that if your climb rate is less than you are used to, you can follow the best valley.

The operating procedure that most lowlanders have the most trouble with is leaning on takeoff. At 6000' field elevation you can't hurt the engine by over-leaning for takeoff but you can give yourself poor performance by taking off with the mixture control all of the way in. And don't rush the takeoffs. The runways are long so let the airplane accellerate and don't force or rush things.

There are likely to still be some snow caps on the front range in early June. Really pretty.

The Sierra Nevada are actually pretty narrow. If you go south of I-80 to Carson City or Minden Nevada for fuel, you will find that you will have to circle for 45 minutes to get high enough for the 45 minute trip across the Sierra and Lake Tahoe. Watch the sailplanes to find the lift and avoid the sink. Another very pretty hop.

A great trip across some alternately beautiful and desolate country.

Best of luck,

Wes
N78041