I doubt this is right but it's what I came up with... thoughts? Do we know for sure exactly where her cell pinged... I'm just going by the mileage while giving that window for a ping.
According to:
http://www.hlntv.com/slideshow/2013/02/11/jodi-arias-trial-tragic-roadtrip
"At 1:08 p.m., Arias returns her rental car. She originally planned to return the car on Friday, June 6 at 8 a.m. Some time during the week, she apparently extended her rental until 9:30 a.m. Saturday, June 7. The rental agent testified that the car appeared to have "Kool-Aid" stains on the passenger seat and back seat and all the floor mats were gone.

In all, Arias traveled 2,834 miles.
She was arrested a little more than a month later, on July 15, 2008."
Using
http://www.travelmath.com/distance/ this is what I came up with.
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2,834 miles:
The driving distance from Redding, California to Pasadena, California is:
-546 miles
The driving distance from Pasadena, California to Mesa, Arizona is:
-387 miles
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(a)The driving distance from Mesa, Arizona to Las Vegas, Nevada is:
381 miles going through Ehrenberg straight to Laughlin then to LV.
OR
(b)The driving distance from Mesa, Arizona to Las Vegas, Nevada is:
380 miles going north from Quartzsite up past Parker Dam/Desert Hills/Needles/Laughlin then to LV.
OR
(c)The driving distance from Mesa, Arizona to Las Vegas, Nevada is:
-366 miles going north from Quartzsite up through Parker Dam then west to #95, up to Needles/Laughlin then to LV.
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The driving distance from Las Vegas, Nevada to Salt Lake City, Utah is:
-421 miles
The driving distance from Salt Lake City, Utah to Redding, California is:
-713 miles
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386(a)-401(c) miles outstanding.
So instead of Salt Lake City directly to Redding I tried these routes:
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The driving distance from Salt Lake City, Utah to Susanville, California is:
601 miles
The driving distance from Susanville, California to Yreka, California is:
168 miles
The driving distance from Yreka, California to Crater Lake National Park is:
123 miles
The driving distance from Crater Lake National Park to Yreka, California is:
123 miles
The driving distance from Yreka, California to Redding, California is:
99 miles
= 1114-713(Salt Lake City, Utah to Redding) =
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401 miles
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