In 2003, GMJBA teams enjoyed using the following practice fields:
| Field | Location |
|---|---|
| Dunstan Middle School | 1855 S Wright St Lakewood, CO 80228-3963 |
| Devinny Elementary | 1725 S Wright St Lakewood, CO 80228-3961 |
| Green Mountain Elementary East Field | 12250 W Kentucky Dr Lakewood, CO 80228-3314 |
| Hutchinson Elementary | 12900 W Utah Ave Lakewood, CO 80228-4223 |
| Irwin Elementary (North & South Fields) | 1505 S Pierson St Lakewood, CO 80232-6014 |
| Rooney Ranch Elementary | 2200 S Coors St Lakewood, CO 80228-4537 |
In 2003, GMJBA teams enjoyed using the following game fields:
| Field | Location |
|---|---|
| Addenbrooke Park | 600 S Kipling St, Lakewood, CO, 80226 |
| Beech Park | 1560 S Beech Lakewood, CO |
| Green Mountain Park | 1555 S Union Blvd Lakewood, CO |
| Lochwood Park | W Arizona & South Routt, Lakewood, CO |
**Game fields cannot be used for practice once the season starts.
| Interactive Green Mountain Map |