I'd dig a trench to the pond, but stop it short. Get the fall correct in the trench from the house to the pond, as close as you dare go without breaking thru.

I'd go so far as to get the fall figured out for the first 10' from the house, and cut/glue the pipe together from the pump to 10' out from the house, or as far as you dare work from the house. Fill in as much of the trench as you can and still keep the pipe at the correct fall. Cut/glue the rest of the pipe together and keep as much as possible out of the trench. Continue with the trench to the pond, finishing as much of the trench as possible, lay the pipe, backfilling as you go. Breach to the pond, slap the pipe in the trench that is now filled with water and backfill.

Suggestion #2.

Get an anti-seep collar. Place a bulkhead fitting thru it, and on the pond side connect a one way valve to the bulkhead fitting. Add enough pipe to keep the anti-seep collar a distance from the pond. Figure out what fall you need at the pipe going thru the anti-seep collar. Cap the house side of the bulkhead fitting. Dig the anti-seep collar into the ground, placing the pipe at the proper level below grade for the correct fall. Yeah, it'll be wet and messy. Backfill and compact to the pond. Now dig on the house side of the anti-seep collar, continuing to the house. Run pipe from sump pump to anti-seep collar. This side of the anti-seep collar should be dry. Remove cap, connect to pipe from house.


www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).