- Address:990 Detroit Ave, Concord, CA 94513
- Phone:(925) 222-9612
- Website:http://thechallengegrounds.com/
- Rating: -
- Hours:
| Mon | 06:00 am - 08:00 pm |
| Tue | 06:00 am - 08:00 pm |
| Wed | 06:00 am - 08:00 pm |
| Thu | 06:00 am - 08:00 pm |
| Fri | 06:00 am - 08:00 pm |
| Sat | 06:00 am - 08:00 pm |
| Sun | 06:00 am - 08:00 pm |
