Here is the hiking plan from South to North and North to South. This is from an Excel spreadsheet, so not sure the format will work.
elev. (ft) from to elev (ft) elev. change total elev. miles total miles ave. grade
7,260 South Kaibab Trailhead Ooh-Aah Point 6,660 600 600 0.9 0.9 13%
6,660 Ooh-Aah Point Cedar Ridge, Point 6,060 600 1,200 0.6 1.5 19%
6,060 Cedar Ridge, Point Skeleton Point 5,200 860 2,060 1.5 3.0 11%
5,200 Skeleton Point Tonto Trail Junction 4,010 1,190 3,250 1.2 4.2 19%
4,010 Tonto Trail Junction Tip Off 3,870 140 3,390 0.2 4.4 13%
3,870 Tip Off Black Bridge (River) 2,400 1,470 4,860 1.7 6.1 16%
2,400 Black Bridge (River) Bright Angel Campground 2,400 0 0 0.4 6.5 0%
2,400 Bright Angel Campground Phantom Ranch 2,560 160 160 0.5 7.0 6%
2,560 Phantom Ranch (the Box) Cottonwood 4,000 1,440 1,600 7.2 14.2 4%
4,000 Cottonwood Pumphouse 4,600 600 2,200 1.4 15.6 8%
4,600 Pumphouse Roaring Springs 5,200 600 2,800 0.7 16.3 16%
5,200 Roaring Springs Bridge 6,000 800 3,600 2.0 18.3 8%
6,000 Bridge Supai Tunnel 6,800 800 4,400 1.0 19.3 15%
6,800 Supai Tunnel Coconino Point 7,750 950 5,350 1.1 20.4 16%
7,750 Coconino Point North Kaibab Trailhead 8,250 500 5,850 0.6 21.0 16%
elev. (ft) from to elev (ft) elev. change total elev. miles total miles ave. grade
8,250 North Kaibab Trailhead Coconino Point 7,750 500 500 0.6 0.6 16%
7,750 Coconino Point Supai Tunnel 6,800 950 1,450 1.1 1.7 16%
6,800 Supai Tunnel Bridge 6,000 800 2,250 1.0 2.7 15%
6,000 Bridge Roaring Springs 5,200 800 3,050 2.0 4.7 8%
5,200 Roaring Springs Pumphouse 4,600 600 3,650 0.7 5.4 16%
4,600 Pumphouse Cottonwood 4,000 600 4,250 1.4 6.8 8%
4,000 Cottonwood (the Box) Phantom Ranch 2,560 1,440 5,690 7.2 14.0 4%
2,560 Phantom Ranch Bright Angel Campground 2,400 160 5,850 0.5 14.5 6%
2,400 Bright Angel Campground Silver Bridge (River) 2,400 0 0 0.3 14.8 0%
2,400 Silver Bridge (River) River Resthouse 2,440 40 40 1.2 16.0 1%
2,440 River Resthouse Top of Devil's Corkscrew 3,500 1,060 1,100 1.6 17.6 13%
3,500 Top of Devil's Corkscrew Indian Garden Campground 3,800 300 1,400 1.4 19.0 4%
3,800 Indian Garden Campground 3 Mile Resthouse 4,720 920 2,320 1.7 20.7 10%
4,720 3 Mile Resthouse 1 ½ Mile Resthouse 5,720 1,000 3,320 1.5 22.2 13%
5,720 1 ½ Mile Resthouse Bright Angel Trailhead 6,890 1,170 4,490 1.6 23.8 14%