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BOSTON MARATHON 2025

Matt Koestner

Bib: 31641•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
10:00/mi
31:03
↑ 97↓ 3451.5%
10K· 6.21 mi
10:02/mi
1:02:13
↑ 79↓ 1380.4%
15K· 9.32 mi
9:56/mi
1:33:05
↑ 67↓ 78
20K· 12.43 mi
10:14/mi
2:04:52
↑ 106↓ 860.1%
Half· 13.11 mi
9:49/mi
2:11:34
↑ 19↓ 370.5%
25K· 15.53 mi
11:40/mi
2:39:51
↑ 66↓ 880.2%
30K· 18.64 mi
11:24/mi
3:15:15
↑ 181↓ 1480.2%
20M
10:45/mi
3:29:51
↑ 64↓ 500.2%
21M
12:09/mi
3:42:00
↑ 106↓ 241.6%
35K· 21.75 mi
10:39/mi
3:49:58
↑ 17↓ 861.7%
23M
12:06/mi
4:05:07
↑ 23↓ 630.6%
24M
13:07/mi
4:18:14
↓ 821.3%
40K· 24.85 mi
10:36/mi
4:27:18
↓ 200.3%
25.2M
12:14/mi
4:31:31
↑ 13↓ 160.2%
Finish· 26.22 mi
9:23/mi
4:41:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:34
Pace10:02 /mi
2nd Half
Distance13.11 mi
Time2:29:31
Pace11:24 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:57:4231:0310:0031:03
10:00
-
10K
6.21 mi12:28:521:02:1310:0131:10
10:02
+0:02
15K
9.32 mi12:59:441:33:059:5930:52
9:56
-0:06
20K
12.43 mi13:31:312:04:5210:0331:47
10:14
+0:18
Half
13.11 mi13:38:132:11:3410:026:42
9:49
-0:25
25K
15.53 mi14:06:302:39:5110:1728:17
11:40
+1:51
30K
18.64 mi14:41:543:15:1510:2835:24
11:24
-0:16
20M
20.00 mi14:56:303:29:5110:3014:36
10:45
-0:39
21M
21.00 mi15:08:393:42:0010:3412:09
12:09
+1:24
35K
21.75 mi15:16:373:49:5810:347:58
10:39
-1:30
23M
23.00 mi15:31:464:05:0710:3915:09
12:06
+1:27
24M
24.00 mi15:44:534:18:1410:4613:07
13:07
+1:01
40K
24.85 mi15:53:574:27:1810:459:04
10:36
-2:31
25.2M
25.20 mi15:58:104:31:3110:464:13
12:14
+1:38
Finish
26.22 mi16:07:444:41:0510:449:34
9:23
-2:51

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

9:23 /mi

Average Pace

10:44 /mi

Slowest Pace

13:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:21

39% of race

Time at Steady Pace

1:03:25

23% of race

Time at Slower Pace

1:48:19

39% of race

Average Pace: 10:43 /mi

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

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:57:4231:0310:0031:03
10:00
#25556
10K
6.21 mi12:28:521:02:1310:0131:10
10:02
#25473
15K
9.32 mi12:59:441:33:059:5930:52
9:56
#25249
20K
12.43 mi13:31:312:04:5210:0331:47
10:14
#25125
Half
13.11 mi13:38:132:11:3410:026:42
9:49
#25090
25K
15.53 mi14:06:302:39:5110:1728:17
11:40
#25296
30K
18.64 mi14:41:543:15:1510:2835:24
11:24
#25188
20M
20.00 mi14:56:303:29:5110:3014:36
10:45
#25054
21M
21.00 mi15:08:393:42:0010:3412:09
12:09
#25005
35K
21.75 mi15:16:373:49:5810:347:58
10:39
#24971
23M
23.00 mi15:31:464:05:0710:3915:09
12:06
#24997
24M
24.00 mi15:44:534:18:1410:4613:07
13:07
#25101
40K
24.85 mi15:53:574:27:1810:459:04
10:36
#25021
25.2M
25.20 mi15:58:104:31:3110:464:13
12:14
#25010
Finish
26.22 mi16:07:444:41:0510:449:34
9:23
#24925
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi25556149831498324867(Top 88%)14655(Top 91%)14655(Top 734%)
10K6.21 mi3.10 mi25473+8314924+5914924+5925387(Top 89%)14872(Top 92%)14872(Top 745%)
15K9.32 mi3.11 mi25249+22414822+10214822+10224867(Top 88%)14655(Top 91%)14655(Top 734%)
20K12.43 mi3.11 mi25125+12414757+6514757+6524708(Top 87%)14536(Top 90%)14536(Top 728%)
Half13.11 mi0.68 mi25090+3514742+1514742+1524419(Top 86%)14407(Top 89%)14407(Top 722%)
25K15.53 mi2.42 mi25296-20614812-7014812-7026060(Top 92%)15098(Top 94%)15098(Top 756%)
30K18.64 mi3.11 mi25188+10814737+7514737+7524690(Top 87%)14396(Top 89%)14396(Top 721%)
20M20.00 mi1.36 mi25054+13414669+6814669+6823058(Top 81%)13553(Top 84%)13553(Top 679%)
21M21.00 mi1.00 mi25005+4914632+3714632+3723848(Top 84%)13845(Top 86%)13845(Top 694%)
35K21.75 mi0.75 mi24971+3414612+2014612+2023474(Top 83%)13626(Top 85%)13626(Top 683%)
23M23.00 mi1.25 mi24997-2614607+514607+525264(Top 89%)14459(Top 90%)14459(Top 724%)
24M24.00 mi1.00 mi25101-10414643-3614643-3626979(Top 95%)15285(Top 95%)15285(Top 766%)
40K24.85 mi0.85 mi25021+8014592+5114592+5122199(Top 78%)12840(Top 80%)12840(Top 643%)
25.2M25.20 mi0.35 mi25010+1114586+614586+623661(Top 83%)13601(Top 84%)13601(Top 681%)
Finish26.22 mi1.02 mi24925+8514539+4714539+4720751(Top 73%)12178(Top 76%)12178(Top 610%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

24867

Males

14655

M50-54

14655

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25387

Males

14872

M50-54

14872

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

24867

Males

14655

M50-54

14655

15K→20K

9.3 - 12.4 mi

Top 87%
×5story building
+106ft-86ft

Overall

24708

Males

14536

M50-54

14536

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

24419

Males

14407

M50-54

14407

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

26060

Males

15098

M50-54

15098

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24690

Males

14396

M50-54

14396

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

23058

Males

13553

M50-54

13553

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23848

Males

13845

M50-54

13845

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23474

Males

13626

M50-54

13626

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

25264

Males

14459

M50-54

14459

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

26979

Males

15285

M50-54

15285

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22199

Males

12840

M50-54

12840

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23661

Males

13601

M50-54

13601

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20751

Males

12178

M50-54

12178

Passing Analysis

Category:
Athletes Passed
1488
Passed By
857
Net Change
+631
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25556
5K → 10K238155+83#25556#25473
10K → 15K26945+224#25473#25249
15K → 20K19672+124#25249#25125
20K → Half4712+35#25125#25090
Half → 25K47253-206#25090#25296
25K → 30K19284+108#25296#25188
30K → 20M1384+134#25188#25054
20M → 21M7122+49#25054#25005
21M → 35K417+34#25005#24971
35K → 23M3965-26#24971#24997
23M → 24M15119-104#24997#25101
24M → 40K888+80#25101#25021
40K → 25.2M187+11#25021#25010
25.2M → Finish894+85#25010#24925
TOTALS1488857+631
📊

Passing Visuals

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