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BOSTON MARATHON 2025

Tim Kosky

Bib: 9506•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:11
Rank: #8972
Start → 5K
22:11 | 7:08/mi
10K· 6.21 mi
43:39
Rank: #8055 (+917)
5K → 10K
21:28 | 6:55/mi
15K· 9.32 mi
1:06:09
Rank: #8449 (-394)
10K → 15K
22:30 | 7:15/mi
20K· 12.43 mi
1:29:37
Rank: #9092 (-643)
15K → 20K
23:28 | 7:33/mi
Half· 13.11 mi
1:34:42
Rank: #9202 (-110)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:53:39
Rank: #9708 (-506)
Half → 25K
18:57 | 7:49/mi
30K· 18.64 mi
2:20:35
Rank: #10959 (-1251)
25K → 30K
26:56 | 8:40/mi
20M
2:32:26
Rank: #11263 (-304)
30K → 20M
11:51 | 8:43/mi
21M
2:41:39
Rank: #11444 (-181)
20M → 21M
9:13 | 9:13/mi
35K· 21.75 mi
2:49:37
Rank: #12218 (-774)
21M → 35K
7:58 | 10:39/mi
23M
3:01:28
Rank: #12686 (-468)
35K → 23M
11:51 | 9:28/mi
24M
3:11:37
Rank: #13276 (-590)
23M → 24M
10:09 | 10:09/mi
40K· 24.85 mi
3:21:34
Rank: #14112 (-836)
24M → 40K
9:57 | 11:38/mi
25.2M
3:25:49
Rank: #14378 (-266)
40K → 25.2M
4:15 | 12:19/mi
Finish· 26.22 mi
3:35:45
Rank: #14760 (-382)
25.2M → Finish
9:56 | 9:45/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:42
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time2:01:03
Pace9:14 /mi
📊Positive Split: 27.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:3622:117:0822:11
7:08
-
10K
6.21 mi11:09:0443:397:0121:28
6:55
-0:13
15K
9.32 mi11:31:341:06:097:0622:30
7:15
+0:20
20K
12.43 mi11:55:021:29:377:1323:28
7:33
+0:18
Half
13.11 mi12:00:071:34:427:135:05
7:27
-0:06
25K
15.53 mi12:19:041:53:397:1918:57
7:49
+0:22
30K
18.64 mi12:46:002:20:357:3226:56
8:40
+0:51
20M
20.00 mi12:57:512:32:267:3711:51
8:43
+0:03
21M
21.00 mi13:07:042:41:397:429:13
9:13
+0:30
35K
21.75 mi13:15:022:49:377:487:58
10:39
+1:26
23M
23.00 mi13:26:533:01:287:5311:51
9:28
-1:11
24M
24.00 mi13:37:023:11:377:5910:09
10:09
+0:41
40K
24.85 mi13:46:593:21:348:079:57
11:38
+1:29
25.2M
25.20 mi13:51:143:25:498:104:15
12:19
+0:41
Finish
26.22 mi14:01:103:35:458:149:56
9:45
-2:34

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

6:55 /mi

Average Pace

8:14 /mi

Slowest Pace

12:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:39

53% of race

Time at Steady Pace

59:51

28% of race

Time at Slower Pace

42:15

20% of race

Average Pace: 8:14 /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 mi10:47:3622:117:0822:11
7:08
#8972
10K
6.21 mi11:09:0443:397:0121:28
6:55
#8055
15K
9.32 mi11:31:341:06:097:0622:30
7:15
#8449
20K
12.43 mi11:55:021:29:377:1323:28
7:33
#9092
Half
13.11 mi12:00:071:34:427:135:05
7:27
#9202
25K
15.53 mi12:19:041:53:397:1918:57
7:49
#9708
30K
18.64 mi12:46:002:20:357:3226:56
8:40
#10959
20M
20.00 mi12:57:512:32:267:3711:51
8:43
#11263
21M
21.00 mi13:07:042:41:397:429:13
9:13
#11444
35K
21.75 mi13:15:022:49:377:487:58
10:39
#12218
23M
23.00 mi13:26:533:01:287:5311:51
9:28
#12686
24M
24.00 mi13:37:023:11:377:5910:09
10:09
#13276
40K
24.85 mi13:46:593:21:348:079:57
11:38
#14112
25.2M
25.20 mi13:51:143:25:498:104:15
12:19
#14378
Finish
26.22 mi14:01:103:35:458:149:56
9:45
#14760
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi8972759875989485(Top 33%)7819(Top 49%)7819(Top 348%)
10K6.21 mi3.10 mi8055+9177022+5767022+5767307(Top 26%)6516(Top 40%)6516(Top 290%)
15K9.32 mi3.11 mi8449-3947251-2297251-2299485(Top 33%)7819(Top 49%)7819(Top 348%)
20K12.43 mi3.11 mi9092-6437614-3637614-36311194(Top 39%)8589(Top 53%)8589(Top 382%)
Half13.11 mi0.68 mi9202-1107672-587672-5811308(Top 40%)8719(Top 54%)8719(Top 388%)
25K15.53 mi2.42 mi9708-5067914-2427914-24212480(Top 44%)9069(Top 56%)9069(Top 404%)
30K18.64 mi3.11 mi10959-12518481-5678481-56715812(Top 56%)10420(Top 65%)10420(Top 464%)
20M20.00 mi1.36 mi11263-3048591-1108591-11015172(Top 53%)9996(Top 62%)9996(Top 445%)
21M21.00 mi1.00 mi11444-1818629-388629-3814698(Top 52%)9662(Top 60%)9662(Top 430%)
35K21.75 mi0.75 mi12218-7748972-3438972-34323459(Top 83%)13611(Top 85%)13611(Top 606%)
23M23.00 mi1.25 mi12686-4689162-1909162-19018511(Top 65%)11217(Top 70%)11217(Top 499%)
24M24.00 mi1.00 mi13276-5909391-2299391-22921787(Top 77%)12702(Top 79%)12702(Top 565%)
40K24.85 mi0.85 mi14112-8369730-3399730-33924357(Top 86%)13935(Top 87%)13935(Top 620%)
25.2M25.20 mi0.35 mi14378-2669843-1139843-11323823(Top 84%)13668(Top 85%)13668(Top 608%)
Finish26.22 mi1.02 mi14760-3829985-1429985-14222057(Top 78%)12810(Top 80%)12810(Top 570%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

9485

Males

7819

M40-44

7819

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

7307

Males

6516

M40-44

6516

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

9485

Males

7819

M40-44

7819

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

11194

Males

8589

M40-44

8589

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

11308

Males

8719

M40-44

8719

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

12480

Males

9069

M40-44

9069

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

15812

Males

10420

M40-44

10420

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

15172

Males

9996

M40-44

9996

20M→21M

20.0 - 21.0 mi

Top 52%
×8stories
+106ft-24ft

Overall

14698

Males

9662

M40-44

9662

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23459

Males

13611

M40-44

13611

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

18511

Males

11217

M40-44

11217

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21787

Males

12702

M40-44

12702

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

24357

Males

13935

M40-44

13935

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

23823

Males

13668

M40-44

13668

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

22057

Males

12810

M40-44

12810

Passing Analysis

Category:
Athletes Passed
1318
Passed By
7104
Net Change
-5788
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8972
5K → 10K93215+917#8972#8055
10K → 15K53447-394#8055#8449
15K → 20K49692-643#8449#9092
20K → Half8118-110#9092#9202
Half → 25K59565-506#9202#9708
25K → 30K381287-1251#9708#10959
30K → 20M56360-304#10959#11263
20M → 21M48229-181#11263#11444
21M → 35K4778-774#11444#12218
35K → 23M38506-468#12218#12686
23M → 24M7597-590#12686#13276
24M → 40K9845-836#13276#14112
40K → 25.2M2268-266#14112#14378
25.2M → Finish15397-382#14378#14760
TOTALS13187104-5788
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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