Is a Nokia phone with GPS good enough to track my runs?

You don't need a new phone, with a £30 bluetooth gps receiver your E61i can run sports tracker and upload the results. If you do want a new phone, I'd reccomend the N82 over the N95. The receiver on the N95 is under the slide while the N82 has it at the top of the phone. As an added bonus if you run Sports Tracker on either phone it will use the accelerometer to count your steps too. I've not had a chance to try the E66 but I did like the E71 when I had a chance to play with it, it may be a good option if you want to keep the E61i form factor. (Disclaimer, I'm a bit biased ;))

If there's any way you can get your hands on a Garmin Forerunner.. do it. Best $$ I ever spent on running (aside from a good pair of shoes, that is).

If you mail-ordered a Forerunner to India it would work fine - it's just a regular GPS in a specialized tiny computer housing. Older units, like the 101 are available quite cheaply. They also show a lot of useful data, like current speed and have modes which can tell you when to speed up and slow down based on a pre-programmed training schedule. if you just want to do tracking, you could use a phone or any cheap screen-less GPS tracker. There are units make for geotagging photos which just track youi everywhere you go. They can be had for < $100 USD but, as you said, will be one more thing to carry.

Map My Run.

Nokia sports tracker is freaking awesome. I use it with my E62 and my Garmin bluetooth GPS. Sadly, I think I left my GPS module in Ohio, so now I have to figure out how to get similar functionality out of my N810, whose TI chip blows compared to the Sirf III in the Garmin. Also sadly, all of Nokia's phones with GPS use that same TI chip. It's not disgustingly awful..it works better than a Sirf II, for example, or about as well as whatever Garmin put in my SO's couple of year old on-dash unit, but its TTFF isn't very good. 3 or 4 minutes usually, or longer with a poor signal. In a place where the 10x (the Sirf III) would get a cold fix in a couple of minutes, the N810 took over 10. (indoors) Outdoors, it was much closer, but still the Sirf came out ahead, and has much less track wandering. And Olli, I'm very annoyed that you've had your hands on an E71. I want one quite badly. ;)

I've got a bluetooth GPS unit that connects to my phone. I then run some free Java software on the phone which logs and saves the tracks. It all works well until I run under a bridge and the GPS unit loses accuracy. The software then thinks I've instantly moved a couple of miles and calculates my average running speed to be 40mph! That could probably be improved by using better logging software. Hope Sports Tracker would perform better. As well as the N82 suggested by Olli you could look at the just released N78. Smaller and cheaper than the N82 and N95, but I don't think it's got an accelerometer so it won't count steps. Oh - and n-thing Map My Run.