The 400 AGL limits for Lake Sawyer, Wenatchee and Kitsap don't surprise me. None of those sites has anything larger than a regional or GA airport within 10 miles so it makes sense. Not sure where most of the others are located but Kitsap is only:
- 6.8 miles from Bremerton National Airport
- 15.6 miles from Seattle-Tacoma International Airport
- 15.1 miles from King County International Airport
- 17.6 miles from Tacoma Narrows Airport
The Lake Sawyer Hawks are only:
- 13.3 miles from Seattle-Tacoma International Airport
- 18.5 miles from King County International Airport
- 13.3 miles from Renton Municiple Airport
- 6.8 miles from Crest Airpark in Kent
All of these distances are point to point using the Google Maps distance measuring functions and addresses from the flying site or club websites. I included Seattle, King County and Renton due to the fact that they all are either major airports(Seattle and King County) or associated with jetliners(Boeing has production facilities at King County and Renton)
The one that is interesting is the Wenatchee Red Apple Flyers. Their flying site is barely two miles from Pangborn Memorial Airport, a good sized regional facility. To make things even more interesting, the R/C field has a paved east/west runway that points right at the airport. Their only saving grace is that Pangborn's runway is set to a northeast/southwest direction so it isn't pointed in the direction of the R/C site