Distance to Goal Flight in Texas

[ryanglover1969[_2_]]

In 1980 Kenneth Atreburn set the record for a distance to goal flight
in the 15 meter class in Texas at 532 miles.
And in 1973 Carson Gilmer set the standard class record at 503 miles.

Does anyone know any details of these flights? Interested especially
where they flew from.

Thanks, Ryan