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BOSTON MARATHON 2025

Andrew Kafka

Bib: 25898•M

MA

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

Start
0:00:00
Race begins
5K· 3.11 mi
25:09
Rank: #17311
Start → 5K
25:09 | 8:06/mi
10K· 6.21 mi
51:01
Rank: #18044 (-733)
5K → 10K
25:52 | 8:20/mi
15K· 9.32 mi
1:17:02
Rank: #18178 (-134)
10K → 15K
26:01 | 8:22/mi
20K· 12.43 mi
1:43:01
Rank: #17932 (+246)
15K → 20K
25:59 | 8:22/mi
Half· 13.11 mi
1:48:28
Rank: #17819 (+113)
20K → Half
5:27 | 7:59/mi
25K· 15.53 mi
2:08:16
Rank: #17321 (+498)
Half → 25K
19:48 | 8:10/mi
30K· 18.64 mi
2:37:24
Rank: #17750 (-429)
25K → 30K
29:08 | 9:23/mi
20M
2:52:39
Rank: #18609 (-859)
30K → 20M
15:15 | 11:13/mi
21M
3:02:35
Rank: #18584 (+25)
20M → 21M
9:56 | 9:56/mi
35K· 21.75 mi
3:09:21
Rank: #18589 (-5)
21M → 35K
6:46 | 9:03/mi
23M
3:21:46
Rank: #18713 (-124)
35K → 23M
12:25 | 9:55/mi
24M
3:31:40
Rank: #18871 (-158)
23M → 24M
9:54 | 9:54/mi
40K· 24.85 mi
3:40:37
Rank: #19018 (-147)
24M → 40K
8:57 | 10:28/mi
25.2M
3:44:00
Rank: #18977 (+41)
40K → 25.2M
3:23 | 9:49/mi
Finish· 26.22 mi
3:52:47
Rank: #18905 (+72)
25.2M → Finish
8:47 | 8:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:28
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time2:04:19
Pace9:29 /mi
📊Positive Split: 14.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:1925:098:0625:09
8:06
-
10K
6.21 mi12:06:1151:018:1325:52
8:20
+0:14
15K
9.32 mi12:32:121:17:028:1626:01
8:22
+0:02
20K
12.43 mi12:58:111:43:018:1725:59
8:22
0:00
Half
13.11 mi13:03:381:48:288:165:27
7:59
-0:23
25K
15.53 mi13:23:262:08:168:1519:48
8:10
+0:11
30K
18.64 mi13:52:342:37:248:2729:08
9:23
+1:13
20M
20.00 mi14:07:492:52:398:3815:15
11:13
+1:50
21M
21.00 mi14:17:453:02:358:429:56
9:56
-1:17
35K
21.75 mi14:24:313:09:218:426:46
9:03
-0:53
23M
23.00 mi14:36:563:21:468:4612:25
9:55
+0:52
24M
24.00 mi14:46:503:31:408:499:54
9:54
-0:01
40K
24.85 mi14:55:473:40:378:538:57
10:28
+0:34
25.2M
25.20 mi14:59:103:44:008:533:23
9:49
-0:39
Finish
26.22 mi15:07:573:52:478:538:47
8:37
-1:12

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

7:59 /mi

Average Pace

8:53 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:16

55% of race

Time at Steady Pace

44:41

19% of race

Time at Slower Pace

59:50

26% of race

Average Pace: 8:53 /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 mi11:40:1925:098:0625:09
8:06
#17311
10K
6.21 mi12:06:1151:018:1325:52
8:20
#18044
15K
9.32 mi12:32:121:17:028:1626:01
8:22
#18178
20K
12.43 mi12:58:111:43:018:1725:59
8:22
#17932
Half
13.11 mi13:03:381:48:288:165:27
7:59
#17819
25K
15.53 mi13:23:262:08:168:1519:48
8:10
#17321
30K
18.64 mi13:52:342:37:248:2729:08
9:23
#17750
20M
20.00 mi14:07:492:52:398:3815:15
11:13
#18609
21M
21.00 mi14:17:453:02:358:429:56
9:56
#18584
35K
21.75 mi14:24:313:09:218:426:46
9:03
#18589
23M
23.00 mi14:36:563:21:468:4612:25
9:55
#18713
24M
24.00 mi14:46:503:31:408:499:54
9:54
#18871
40K
24.85 mi14:55:473:40:378:538:57
10:28
#19018
25.2M
25.20 mi14:59:103:44:008:533:23
9:49
#18977
Finish
26.22 mi15:07:573:52:478:538:47
8:37
#18905
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17311113381133818532(Top 65%)11856(Top 74%)11856(Top 210%)
10K6.21 mi3.10 mi18044-73311634-29611634-29618709(Top 66%)11947(Top 74%)11947(Top 212%)
15K9.32 mi3.11 mi18178-13411691-5711691-5718532(Top 65%)11856(Top 74%)11856(Top 210%)
20K12.43 mi3.11 mi17932+24611587+10411587+10417311(Top 61%)11313(Top 70%)11313(Top 201%)
Half13.11 mi0.68 mi17819+11311525+6211525+6215794(Top 56%)10712(Top 67%)10712(Top 190%)
25K15.53 mi2.42 mi17321+49811319+20611319+20615085(Top 53%)10269(Top 64%)10269(Top 182%)
30K18.64 mi3.11 mi17750-42911441-12211441-12219440(Top 68%)12031(Top 75%)12031(Top 213%)
20M20.00 mi1.36 mi18609-85911808-36711808-36724041(Top 85%)14004(Top 87%)14004(Top 248%)
21M21.00 mi1.00 mi18584+2511764+4411764+4418035(Top 63%)11177(Top 69%)11177(Top 198%)
35K21.75 mi0.75 mi18589-511751+1311751+1318435(Top 65%)11239(Top 70%)11239(Top 199%)
23M23.00 mi1.25 mi18713-12411771-2011771-2020219(Top 71%)12008(Top 75%)12008(Top 213%)
24M24.00 mi1.00 mi18871-15811819-4811819-4821047(Top 74%)12363(Top 77%)12363(Top 219%)
40K24.85 mi0.85 mi19018-14711856-3711856-3721817(Top 77%)12658(Top 79%)12658(Top 224%)
25.2M25.20 mi0.35 mi18977+4111827+2911827+2916128(Top 57%)9953(Top 62%)9953(Top 176%)
Finish26.22 mi1.02 mi18905+7211776+5111776+5116952(Top 60%)10376(Top 64%)10376(Top 184%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

18532

Males

11856

M18-39

11856

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18709

Males

11947

M18-39

11947

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

18532

Males

11856

M18-39

11856

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

17311

Males

11313

M18-39

11313

20K→Half

12.4 - 13.1 mi

Top 56%
×2stories
+19ft-37ft

Overall

15794

Males

10712

M18-39

10712

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

15085

Males

10269

M18-39

10269

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

19440

Males

12031

M18-39

12031

30K→20M

18.6 - 20.0 mi

Top 85%
×5stories
+64ft-50ft

Overall

24041

Males

14004

M18-39

14004

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

18035

Males

11177

M18-39

11177

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

18435

Males

11239

M18-39

11239

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

20219

Males

12008

M18-39

12008

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

21047

Males

12363

M18-39

12363

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21817

Males

12658

M18-39

12658

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16128

Males

9953

M18-39

9953

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

16952

Males

10376

M18-39

10376

Passing Analysis

Category:
Athletes Passed
1758
Passed By
3352
Net Change
-1594
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17311
5K → 10K85818-733#17311#18044
10K → 15K140274-134#18044#18178
15K → 20K31973+246#18178#17932
20K → Half1141+113#17932#17819
Half → 25K5024+498#17819#17321
25K → 30K108537-429#17321#17750
30K → 20M18877-859#17750#18609
20M → 21M12095+25#18609#18584
21M → 35K5055-5#18584#18589
35K → 23M81205-124#18589#18713
23M → 24M27185-158#18713#18871
24M → 40K44191-147#18871#19018
40K → 25.2M509+41#19018#18977
25.2M → Finish10028+72#18977#18905
TOTALS17583352-1594
📊

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