long, slow
short
arduous, difficult, hard, steep, tough (esp. AmE)
uphill (often figurative, esp. AmE)
The airline faces an uphill climb to compete with top air carriers.

easy
steady
final
We rode to Pamba then made the final climb on foot.

do, make
I was fitter the first time I did the climb.

on a/the climb
I broke my ankle on a climb last week.

climb from, climb to
the short climb from the road to the summit

climb up
They began the long climb up the hill.

long, slow
rapid
gradual, steady
upward
the upward climb of interest rates

climb against
the dollar's climb against the euro

climb in
a steady climb in the cost of travel

climb out of
a long slow climb out of recession

climb to
her rapid climb to stardom

high
Don't climb too high.

slowly
nimbly, quickly, rapidly, swiftly
carefully
wearily

up
He climbed slowly up the ladder.

onto
Two boys climbed onto the roof.

into
He climbed into the truck and drove off.

over
I climbed over the fence into the meadow.

climb to the top
We climbed right to the top of the mountain.

go climbing (= for sport)
He goes climbing every summer.

gradually, slowly
steadily
steeply
up

begin to
The path began to climb quite steeply.

from
The road gradually climbs up from the town.

to
The plane took off and climbed to 20 000 feet.

up
The path climbs steeply up the mountainside.

quickly, rapidly, sharply, steeply
Prices have climbed sharply in recent months.

steadily
slowly
The vaccination rate began to climb slowly.

above
The temperature had climbed above 90 degrees.

from, to
Unemployment has climbed from two million to three million.