the only way i can think about going faster than the max speed for minecarts right now is using cannons to propell yourself. My 120 tnt cannon launches me VERY VERY FAST across the map, i use editors so hp and tnt are no problem for me
In the words of a famous singer from Lego Island, Kathleen N. Right, "You can move a mountain, if you do it brick by brick."
In your case, block by block.
Not realistically though.
But yeah your only option is to use boosters and just wait the ride out.
Quote from Kromeh »
The only way you could change the maximum speed is by modding.
At least you don't have to walk it all
I only use railways as a means of transporting tools and materials.
*currently has 3 minetrunks filled with cobble, dirt, and tools sitting alongside a future road*
just need to know where it will lead to.