Season
Level
Personal Records Personal Records
Event Mark State National Date
3000m 9:01.54 Jan 31, 2025
3 Mile 16:03.59 Sep 24, 2022
5K 15:48.42 Jan 26, 2025
6K 19:33.70 Sep 5, 2026
8K 26:12.50 Oct 5, 2024
100m 15.00 Dec 3, 2024
1 Mile 4:32.29 Feb 13, 2026
3000m 9:01.54 Jan 31, 2025
5K 15:48.42 Jan 26, 2025
4.x Mile 27:26.24 Oct 4, 2025
5K 16:23.00 Nov 8, 2025
6K 19:33.70 Sep 5, 2026
8K 26:12.50 Oct 5, 2024
10K 36:08.70 Nov 5, 2023
2 Mile 11:53.50 Oct 10, 2019
2.5 Mile 14:56.00 Sep 28, 2019
3 Mile 16:03.59 Sep 24, 2022
1500m 4:11.90 May 8, 2026
3000m 9:07.95 Mar 20, 2026
5K 16:44.78 Mar 15, 2024
3K Steeple 10:07.98 Apr 11, 2026
1600m 4:35.45 May 5, 2023
3200m 9:55.90 May 12, 2023
100m 15.00 Dec 3, 2024
1 Mile 4:32.29 Feb 13, 2026
3000m 9:01.54 Jan 31, 2025
5K 15:48.42 Jan 26, 2025
4.x Mile 27:26.24 Oct 4, 2025
5K 16:23.00 Nov 8, 2025
6K 19:33.70 Sep 5, 2026
8K 26:12.50 Oct 5, 2024
10K 36:08.70 Nov 5, 2023
1500m 4:11.90 May 8, 2026
3000m 9:07.95 Mar 20, 2026
5K 16:44.78 Mar 15, 2024
3K Steeple 10:07.98 Apr 11, 2026
1600m 4:35.45 May 5, 2023
3200m 9:55.90 May 12, 2023
2 Mile 11:53.50 Oct 10, 2019
2.5 Mile 14:56.00 Sep 28, 2019
3 Mile 16:03.59 Sep 24, 2022
5K 17:02.50 Oct 7, 2020
See where Duncan ranks State & National rankings, available to MileSplit PRO subscribers. Join MileSplit PRO
Results Results

To see all performances, subscribe to

MileSplit Logo
Join Now

Already a Pro member?

2026 - Cc

6,000 Meter Run

8000 Meter Run

2026 - Outdoor

1500 Meter Run

3000 Meter Run

3000 Meter Steeplechase

2026 - Indoor

One Mile Run

3000 Meter Run

2025 - Cc

4.x Mile Run

5000 Meter Run

6,000 Meter Run

8000 Meter Run

2025 - Indoor

100 Meter Dash

3000 Meter Run

5000 Meter Run

2024 - Cc

8000 Meter Run

2024 - Outdoor

5000 Meter Run

2024 - Indoor

One Mile Run

5000 Meter Run

2023 - Cc

6,000 Meter Run

8000 Meter Run

10,000 Meter Run

2023 - Outdoor

1600 Meter Run

3200 Meter Run

2022 - Cc

Three Mile Run

2021 - Cc

Three Mile Run

2020 - Cc

Three Mile Run

5000 Meter Run

2019 - Cc

2 Mile Run

2.5 Mile Run

Three Mile Run

College Progression Tracker

Your 1600m performance is better than XX% of Division I athletes when they were Senior in high school.