Mile 520 (elliptical for 1 mile)
(photo credit - Copyright 2006 Lawrence Berkeley Lab)
Mile 521 (elliptical for 1 mile)
(photo credit - Copyright 2006 Lawrence Berkeley Lab)
Mile 521.4 (elliptical for .5 mile)
(photo credit - Copyright 2006 Lawrence Berkeley Lab)
Mile 522 (elliptical for .5 mile)
(photo credit - Copyright 2006 Lawrence Berkeley Lab)
Mile 523 (elliptical for 1 mile)
(photo credit - Copyright 2006 Lawrence Berkeley Lab)
Mile 524 (elliptical for 1 mile)
(photo credit - Copyright 2006 Lawrence Berkeley Lab)
Keep moving!