Mostly for fun. These are estimates based on runs, trials and some basic math. Assumes no Revive.

				%		HOW
Rival 1			88		Crit
Route 1			95
BC1				100
BC2				100
BC3				100
Weedle Guy		100
Brock			89		Crit (only if faster), calculated risk
BC1				100
Lass			95		Calculated risk
BC2				100
Rocket			85		Calculated risk
Super Nerd		98
Rival 2			65		Mega Kick miss, crit
NB1				99.9
NB2				100
NB3				100
NB4				100
NB5				99.9
Rocket			100
Hiker			85		Calculated risk
Picnicker		100
Camper			99
Lass			99
Rocket			95		Mega Kick miss
Camper			85		Mega Kick miss
Youngster		99.9
Rival 3			69		Mega Kick miss
Misty			63		Mega miss
Picnicker		100
Bug Catcher		100
Pokemaniac		98		Mega misses, crits
Pokemaniac		96		Mega misses, crits
Picnicker		100
Hiker			92		Crit/high Magnitude
Hiker			99.9
Picnicker		99.9
Hiker			91		Crit/high Magnitude
Picnicker		99.9
Lass			100
Beauty			100
Beauty			100
Erika			100
Rocket			99
Rocket			100
Rocket			100
Rocket			100
Giovanni 1		93		Bad ranges
Lavender Rival	99
Channeler		100
Channeler		100
Channeler		100
Rocket			100
Rocket			100
Rocket			100
Silph Rival		91		Crit
Rocket			100
Giovanni 2		82		Calculated risk
Sabrina			100
Juggler			100
Koga			94		Calculated risk, crit/poison
Blaine			92		Crit, calculated risk
Black Belt		100
Cooltrainer		99.9
Giovanni		99.9
Viridian Rival	85		Fire Blast miss, crit
Lorelei			70		Fire Blast miss/low roll, crit
Bruno			80		Crit, Mach Punch
Agatha			93		Calculated risk, crit
Lance			74		Fire Blast miss/low roll, crit
Champion		78		Fire Blast miss/low roll, crit

TOTAL: 1.3% chance of completing a run without a death
Complete 1 run every ~800 attempts

Odds of making past:
Brock			74
Rival 2			38
Rival 3			18
Misty			11
Rock Tunnel		9
Giovanni 3		5

TOP RUN KILLERS:
1. Misty (37%)
2. Rival 2 (34%)
3. Rival 3 (31%)
4. Lorelei (30%)
5. Lance (26%)