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BOSTON MARATHON 2025

Steve Koski

Bib: 21228•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:09
Rank: #19405
Start → 5K
26:09 | 8:25/mi
10K· 6.21 mi
51:56
Rank: #18975 (+430)
5K → 10K
25:47 | 8:18/mi
15K· 9.32 mi
1:17:52
Rank: #18753 (+222)
10K → 15K
25:56 | 8:21/mi
20K· 12.43 mi
1:44:10
Rank: #18537 (+216)
15K → 20K
26:18 | 8:28/mi
Half· 13.11 mi
1:49:58
Rank: #18566 (-29)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:11:39
Rank: #18760 (-194)
Half → 25K
21:41 | 8:57/mi
30K· 18.64 mi
2:40:33
Rank: #18825 (-65)
25K → 30K
28:54 | 9:18/mi
20M
2:53:48
Rank: #18977 (-152)
30K → 20M
13:15 | 9:45/mi
21M
3:04:06
Rank: #18992 (-15)
20M → 21M
10:18 | 10:18/mi
35K· 21.75 mi
3:11:10
Rank: #19049 (-57)
21M → 35K
7:04 | 9:27/mi
23M
3:23:08
Rank: #19058 (-9)
35K → 23M
11:58 | 9:33/mi
24M
3:32:48
Rank: #19122 (-64)
23M → 24M
9:40 | 9:40/mi
40K· 24.85 mi
3:41:27
Rank: #19214 (-92)
24M → 40K
8:39 | 10:07/mi
25.2M
3:45:11
Rank: #19213 (+1)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
3:54:41
Rank: #19277 (-64)
25.2M → Finish
9:30 | 9:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:58
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time2:04:43
Pace9:31 /mi
📊Positive Split: 13.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4926:098:2526:09
8:25
-
10K
6.21 mi11:45:3651:568:2125:47
8:18
-0:07
15K
9.32 mi12:11:321:17:528:2125:56
8:21
+0:03
20K
12.43 mi12:37:501:44:108:2326:18
8:28
+0:07
Half
13.11 mi12:43:381:49:588:235:48
8:30
+0:02
25K
15.53 mi13:05:192:11:398:2821:41
8:57
+0:27
30K
18.64 mi13:34:132:40:338:3728:54
9:18
+0:21
20M
20.00 mi13:47:282:53:488:4113:15
9:45
+0:27
21M
21.00 mi13:57:463:04:068:4610:18
10:18
+0:33
35K
21.75 mi14:04:503:11:108:477:04
9:27
-0:51
23M
23.00 mi14:16:483:23:088:5011:58
9:33
+0:06
24M
24.00 mi14:26:283:32:488:529:40
9:40
+0:07
40K
24.85 mi14:35:073:41:278:558:39
10:07
+0:27
25.2M
25.20 mi14:38:513:45:118:563:44
10:50
+0:43
Finish
26.22 mi14:48:213:54:418:579:30
9:19
-1:31

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

8:18 /mi

Average Pace

8:57 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:58

47% of race

Time at Steady Pace

1:28:47

38% of race

Time at Slower Pace

35:56

15% of race

Average Pace: 8:57 /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 mi11:19:4926:098:2526:09
8:25
#19405
10K
6.21 mi11:45:3651:568:2125:47
8:18
#18975
15K
9.32 mi12:11:321:17:528:2125:56
8:21
#18753
20K
12.43 mi12:37:501:44:108:2326:18
8:28
#18537
Half
13.11 mi12:43:381:49:588:235:48
8:30
#18566
25K
15.53 mi13:05:192:11:398:2821:41
8:57
#18760
30K
18.64 mi13:34:132:40:338:3728:54
9:18
#18825
20M
20.00 mi13:47:282:53:488:4113:15
9:45
#18977
21M
21.00 mi13:57:463:04:068:4610:18
10:18
#18992
35K
21.75 mi14:04:503:11:108:477:04
9:27
#19049
23M
23.00 mi14:16:483:23:088:5011:58
9:33
#19058
24M
24.00 mi14:26:283:32:488:529:40
9:40
#19122
40K
24.85 mi14:35:073:41:278:558:39
10:07
#19214
25.2M
25.20 mi14:38:513:45:118:563:44
10:50
#19213
Finish
26.22 mi14:48:213:54:418:579:30
9:19
#19277
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi19405122051220518360(Top 65%)11784(Top 73%)11784(Top 936%)
10K6.21 mi3.10 mi18975+43012031+17412031+17418539(Top 65%)11867(Top 74%)11867(Top 943%)
15K9.32 mi3.11 mi18753+22211937+9411937+9418360(Top 65%)11784(Top 73%)11784(Top 936%)
20K12.43 mi3.11 mi18537+21611841+9611841+9617985(Top 63%)11608(Top 72%)11608(Top 922%)
Half13.11 mi0.68 mi18566-2911854-1311854-1319173(Top 68%)12121(Top 75%)12121(Top 963%)
25K15.53 mi2.42 mi18760-19411926-7211926-7219647(Top 69%)12253(Top 76%)12253(Top 973%)
30K18.64 mi3.11 mi18825-6511928-211928-219115(Top 67%)11885(Top 74%)11885(Top 944%)
20M20.00 mi1.36 mi18977-15211957-2911957-2920103(Top 71%)12196(Top 76%)12196(Top 969%)
21M21.00 mi1.00 mi18992-1511937+2011937+2019359(Top 68%)11773(Top 73%)11773(Top 935%)
35K21.75 mi0.75 mi19049-5711947-1011947-1020121(Top 71%)12024(Top 75%)12024(Top 955%)
23M23.00 mi1.25 mi19058-911925+2211925+2218923(Top 67%)11408(Top 71%)11408(Top 906%)
24M24.00 mi1.00 mi19122-6411932-711932-720253(Top 71%)11984(Top 74%)11984(Top 952%)
40K24.85 mi0.85 mi19214-9211942-1011942-1020817(Top 73%)12193(Top 76%)12193(Top 968%)
25.2M25.20 mi0.35 mi19213+111929+1311929+1320084(Top 71%)11826(Top 73%)11826(Top 939%)
Finish26.22 mi1.02 mi19277-6411939-1011939-1020461(Top 72%)12036(Top 75%)12036(Top 956%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

18360

Males

11784

M60-64

11784

5K→10K

3.1 - 6.2 mi

Top 65%
×5stories
+79ft-138ft

Overall

18539

Males

11867

M60-64

11867

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

18360

Males

11784

M60-64

11784

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

17985

Males

11608

M60-64

11608

20K→Half

12.4 - 13.1 mi

Top 68%
×2stories
+19ft-37ft

Overall

19173

Males

12121

M60-64

12121

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19647

Males

12253

M60-64

12253

25K→30K

15.5 - 18.6 mi

Top 67%
×9stories
+181ft-148ft

Overall

19115

Males

11885

M60-64

11885

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20103

Males

12196

M60-64

12196

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

19359

Males

11773

M60-64

11773

21M→35K

21.0 - 21.8 mi

Top 71%
×7stories
+17ft-86ft

Overall

20121

Males

12024

M60-64

12024

35K→23M

21.8 - 23.0 mi

Top 67%
×5stories
+23ft-63ft

Overall

18923

Males

11408

M60-64

11408

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

20253

Males

11984

M60-64

11984

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20817

Males

12193

M60-64

12193

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20084

Males

11826

M60-64

11826

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

20461

Males

12036

M60-64

12036

Passing Analysis

Category:
Athletes Passed
1966
Passed By
1838
Net Change
+128
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19405
5K → 10K540110+430#19405#18975
10K → 15K30886+222#18975#18753
15K → 20K30892+216#18753#18537
20K → Half2352-29#18537#18566
Half → 25K108302-194#18566#18760
25K → 30K226291-65#18760#18825
30K → 20M62214-152#18825#18977
20M → 21M95110-15#18977#18992
21M → 35K43100-57#18992#19049
35K → 23M8998-9#19049#19058
23M → 24M45109-64#19058#19122
24M → 40K48140-92#19122#19214
40K → 25.2M3433+1#19214#19213
25.2M → Finish37101-64#19213#19277
TOTALS19661838+128
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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