There is no way as a user to know the path to the repo on the pulp service itself after you create it.  You have to just know that they are found at:

https://somehost.example.com/pulp/repos/<id>/

the command 'distribution list' shows the URL to the tree:

$ pulp-admin distribution list
+------------------------------------------+
       List of Available Distributions
+------------------------------------------+

Id                    	ks-kstree-noarch         
Description           	ks-kstree-noarch          
URL                   	https://localhost/pulp/ks/repo/f15-x86_64/


we should do the same for repos:

$ pulp-admin repo list
+------------------------------------------+
       List of Available Repositories
+------------------------------------------+

Id                 	kstree                   
Name               	kstree                   
Feed URL           	http://172.31.1.102/repo/f15-x86_64/
Feed Type          	remote                   
Content Type       	yum                      
Feed Certs         	CA:No   Cert:No
Consumer Certs     	CA:No   Cert:No
Architecture       	noarch                   
Sync Schedule      	None                     
Packages           	2935                     
Files              	0                        
Distributions      	ks-kstree-noarch         
Publish            	True                     
Clones             	[]                       
Groups             	None                     
Filters            	[]                       
Notes              	{}                       
URL                     https://localhost/pulp/repo/f15-x86_64/