Better Sprint

summon FallingSand ~ ~1 ~ {Block:stone,Time:1,Passengers:[{id:FallingSand,Block:redstone_block,Time:1,Passengers:[{id:FallingSand,Block:activator_rail,Time:1,Passengers:[{id:MinecartCommandBlock,Command:gamerule commandBlockOutput false},{id:MinecartCommandBlock,Command:fill ~2 ~-3 ~-1 ~5 ~-1 ~1 stained_hardened_clay 2 hollow},{id:MinecartCommandBlock,Command:fill ~2 ~-2 ~-1 ~5 ~-2 ~1 stained_glass 10 0 stained_hardened_clay},{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"START\\\",\\\"color\\\":\\\"dark_green\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/scoreboard objectives add sprint stat.sprintOneCm\\\"},\\\"bold\\\":true}",Text2:"{\\\"text\\\":\\\"BETTER SPRINT\\\",\\\"color\\\":\\\"dark_red\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/setblock ~ ~ ~ air\\\"},\\\"bold\\\":true}",Text3:"{\\\"text\\\":\\\"by\\\",\\\"color\\\":\\\"red\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/particle happyVillager ~ ~ ~ .2 .2 .2 1 50 force\\\"}}",Text4:"{\\\"text\\\":\\\"aRedstoneExpert\\\",\\\"color\\\":\\\"red\\\"}"}},{id:MinecartCommandBlock,Command:fill ~3 ~-2 ~ ~4 ~-2 ~ chain_command_block 5},{id:MinecartCommandBlock,Command:setblock ~3 ~-2 ~ repeating_command_block 5},{id:MinecartCommandBlock,Command:blockdata ~4 ~-2 ~ {auto:1,Command:/scoreboard players set @a[score_sprint_min=1] sprint 0 }},{id:MinecartCommandBlock,Command:blockdata ~3 ~-2 ~ {auto:1,Command:/effect @a[score_sprint_min=1] minecraft:speed 1 5 true}},{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 0 {Command:fill ~ ~-3 ~-1 ~ ~ ~ air}},{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block},{id:MinecartCommandBlock,Command:kill @e[type=MinecartCommandBlock,r=1]}]}]}]}