For the treks in Kumaon or in the bordering area of Garhwal, one has to reach Kathgodam/Haldwani normally. Lal Kuan is just 20 Km and Haldwani is 5 Km before Kathgodam. Bus, shared taxi and private cars are available.
You can fly or by train reach New Delhi as per your convenience from any part within India. Reach Delhi accordingly that you have enough time for transit withing Delhi.
There are direct trains from Kolkata to Kathgodam(KGM)/Lal Kuan(LKU)
BAGH EXPRESS – Train No. 13019 (ONLY book when you stay the night at Kathgodam, DON’t book this train when you plan a long onward journey immediately in the morning)]
HWH LKU EXP – Train No. 12353 – Lalkuan Express (runs only on Friday, you need to stay at Kathgodam for the night, only 20 Km away)
Avoid booking wait listed (WL) tickets in AC classes (1A/2A/3A) or Chair Car (CC). Book Sleeper class (SL)/Second Sitting class (2S) tickets which have normally more seats/berth and hence much better chance to get confirmed.
Kathgodam/Haldwani is easily reached from New Delhi by Train or Bus (~6-8 hours) and is around 270Km.
Following trains are good to reach Kathgodam and run daily.
RANIKHET EXP – Train No. 15013 (best option, runs overnight, arrives KGM early morning @ 5 am. Board from Delhi(DLI)/Old Delhi Junction station)
UTR SAMPRK K EX – Uttaranchal Sampark Kranti Express – Train No. 15035 (good option when you stay the night @ Kathgodam and travel next morning)
ANVT KGM SHT – Anand Vihar Kathgodam Shatabdi Express – Train No. 12040 (Arrives KGM in the morning @ 11:40 am, alternate choice when you stay the night in Kathgodam and travel by car next morning)
Always avoid booking wait listed (WL) tickets in AC classes (1A/2A/3A) or Chair Car (CC). Book Sleeper class (SL)/Second Sitting class (2S) tickets which have normally more seats/berth and hence much better chance to get confirmed.
Haldwani buses are more frequent than that of Kathgodam. It is easy to reach Kathgodam from Haldwani which is only 5 km. from away.
Govt. Road Transport (Roadways of Uttarakhand, Uttar Pradesh, Delhi etc) buses are frequently available in day time and night from Anand Vihar ISBT (http://www.delhi.gov.in/wps/wcm/connect/doit_transport/Transport/Home/ISBT/Fare+Chart). Tickets are available on board for these regular type buses. Some of the state transport companies offer online reservation for Volvo/A.C Luxury buses. Check these For online booking: https://www.upsrtconline.co.in/# ; http://uttarakhandroadways.com
From Delhi Airport or Station you can reach ISBT Anand Vihar via Delhi Metro service (http://www.delhimetrorail.com/metro-fares.aspx).
For privately operated bus, you can book online from different portals (http://www.redbus.in). Select a boarding point suitably. Overnight Volvo/A.C/Push back bus service.
For night stay in Kathgodam:
Trekkers reaching on the previous day before the journey to the actual trek base need to stay the night in Kathgodam. There are few options in Kathgodam for spending a night while staying in Standard accommodation.
State run KMVN (Kumaon Mandal Vikas Nigam) operates Tourist Rest House at Kathgodam just opposite to the railway station (beside Bus stand). This is a reliable and a decent choice for Standard accommodation. Check the following for reservation of the above http://www.kmvn.gov.in/contacts/index/23
There are privately run hotels/lodges near Haldwani Bus terminus.
Retrun From Kathgodam:
Normally you reach from trek base to Kathgodam by 5/6 pm in the evening. You can take any train after 7 pm or regular bus service as mentioned above to reach Delhi or directly to your homeward journey.