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BOSTON MARATHON 2025

Brendan Duane

MA

Bib: 31876 M

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:11/mi
28:31
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:47/mi
55:47
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:10/mi
1:24:17
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
10:10/mi
1:55:51
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
10:27/mi
2:02:59
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
11:07/mi
2:29:56
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
13:02/mi
3:10:25
↑ 181↓ 1480.2%
138 ft elev
20M
14:00/mi
3:29:26
↑ 64↓ 500.2%
148 ft elev
21M
14:11/mi
3:43:37
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
13:02/mi
3:53:22
↑ 17↓ 861.7%
156 ft elev
23M
13:52/mi
4:10:44
↑ 23↓ 630.6%
116 ft elev
24M
13:46/mi
4:24:30
↓ 821.3%
34 ft elev
40K· 24.85 mi
13:26/mi
4:35:59
↓ 200.3%
20 ft elev
25.2M
14:30/mi
4:40:59
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
11:57/mi
4:53:10
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:02:599:23 /mi⚡ faster
2nd Half
2:50:1112:59 /mi+38.4%
Positive split — 38.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
28:319:113.11 mi28:31
9:11
-
10K
55:478:593.10 mi27:16
8:47
-0:24
15K
1:24:179:033.11 mi28:30
9:10
+0:23
20K
1:55:519:193.11 mi31:34
10:10
+1:00
Half(13.11 mi)
2:02:599:230.68 mi7:08
10:27
+0:17
25K
2:29:569:392.42 mi26:57
11:07
+0:40
30K
3:10:2510:133.11 mi40:29
13:02
+1:55
20M
3:29:2610:281.36 mi19:01
14:00
+0:58
21M
3:43:3710:391.00 mi14:11
14:11
+0:11
35K
3:53:2210:440.75 mi9:45
13:02
-1:09
23M
4:10:4410:541.25 mi17:22
13:52
+0:50
24M
4:24:3011:011.00 mi13:46
13:46
-0:06
40K
4:35:5911:060.85 mi11:29
13:26
-0:20
25.2M
4:40:5911:090.35 mi5:00
14:30
+1:04
Finish(26.22 mi)
4:53:1011:111.02 mi12:11
11:57
-2:33
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:47 /mi

Average Pace

11:11 /mi

Slowest Pace

14:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:42:07

55% of race

Time at Steady Pace

1:51:52

38% of race

Time at Slower Pace

19:11

7% of race

Average Pace: 11:11 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi231461383913839227591372213722
10K3.10 mi22339+80713474+36513474+365212901304313043
15K3.11 mi22453-11413558-8413558-84227591372213722
20K3.11 mi23202-74913906-34813906-348245561447414474
Half(13.11 mi)0.68 mi23380-17813988-8213988-82257211498014980
25K2.42 mi23852-47214173-18514173-185253701480314803
30K3.11 mi24682-83014516-34314516-343267121530015300
20M1.36 mi25020-33814650-13414650-134272891552015520
21M1.00 mi25144-12414690-4014690-40264161508115081
35K0.75 mi25231-8714721-3114721-31269951533715337
23M1.25 mi25394-16314777-5614777-56272191543615436
24M1.00 mi25554-16014846-6914846-69275031555015550
40K0.85 mi25637-8314871-2514871-25267081513615136
25.2M0.35 mi25668-3114879-814879-8267431513515135
Finish(26.22 mi)1.02 mi25737-6914906-2714906-27267391517415174

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

22759

Males

13722

M18-39

13722

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21290

Males

13043

M18-39

13043

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

22759

Males

13722

M18-39

13722

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24556

Males

14474

M18-39

14474

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

25721

Males

14980

M18-39

14980

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

25370

Males

14803

M18-39

14803

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

26712

Males

15300

M18-39

15300

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27289

Males

15520

M18-39

15520

20M→21M

20.0 - 21.0 mi

Top 93%
×8story building
+106ft-24ft

Overall

26416

Males

15081

M18-39

15081

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

26995

Males

15337

M18-39

15337

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27219

Males

15436

M18-39

15436

23M→24M

23.0 - 24.0 mi

Top 97%
×6story building
+12ft-82ft

Overall

27503

Males

15550

M18-39

15550

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

26708

Males

15136

M18-39

15136

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

26743

Males

15135

M18-39

15135

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26739

Males

15174

M18-39

15174

Passing Analysis

Category:
▼Net Change
0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#23146
5K → 10K
32839+807
#23146 → #22339
10K → 15K
255141-114
#22339 → #22453
15K → 20K
79142-749
#22453 → #23202
20K → Half
1846-178
#23202 → #23380
Half → 25K
50432-472
#23380 → #23852
25K → 30K
84616-830
#23852 → #24682
30K → 20M
3457-338
#24682 → #25020
20M → 21M
13915-124
#25020 → #25144
21M → 35K
936-87
#25144 → #25231
35K → 23M
1685-163
#25231 → #25394
23M → 24M
1677-160
#25394 → #25554
24M → 40K
9815-83
#25554 → #25637
40K → 25.2M
376-31
#25637 → #25668
25.2M → Finish
789-69
#25668 → #25737
TOTALS
37371146-2591
#23146 → #25737

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing