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BOSTON MARATHON 2025

Kim Sack

Bib: 32297•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F65-69)
#0 / 222
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:14
Rank: #25704
Start → 5K
31:14 | 10:03/mi
10K· 6.21 mi
1:04:16
Rank: #26174 (-470)
5K → 10K
33:02 | 10:38/mi
15K· 9.32 mi
1:37:14
Rank: #26157 (+17)
10K → 15K
32:58 | 10:37/mi
20K· 12.43 mi
2:11:39
Rank: #26143 (+14)
15K → 20K
34:25 | 11:05/mi
Half· 13.11 mi
2:19:01
Rank: #26146 (-3)
20K → Half
7:22 | 10:48/mi
25K· 15.53 mi
2:46:27
Rank: #26057 (+89)
Half → 25K
27:26 | 11:19/mi
30K· 18.64 mi
3:23:14
Rank: #25912 (+145)
25K → 30K
36:47 | 11:50/mi
20M
3:39:32
Rank: #25874 (+38)
30K → 20M
16:18 | 12:00/mi
21M
3:52:15
Rank: #25821 (+53)
20M → 21M
12:43 | 12:43/mi
35K· 21.75 mi
4:00:55
Rank: #25812 (+9)
21M → 35K
8:40 | 11:35/mi
23M
4:16:02
Rank: #25794 (+18)
35K → 23M
15:07 | 12:04/mi
24M
4:27:37
Rank: #25779 (+15)
23M → 24M
11:35 | 11:35/mi
40K· 24.85 mi
4:38:41
Rank: #25818 (-39)
24M → 40K
11:04 | 12:57/mi
25.2M
4:43:19
Rank: #25814 (+4)
40K → 25.2M
4:38 | 13:26/mi
Finish· 26.22 mi
4:54:52
Rank: #25839 (-25)
25.2M → Finish
11:33 | 11:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:19:01
Pace10:36 /mi
2nd Half
Distance13.11 mi
Time2:35:51
Pace11:53 /mi
📊Positive Split: 12.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:0231:1410:0331:14
10:03
-
10K
6.21 mi12:29:041:04:1610:2133:02
10:38
+0:35
15K
9.32 mi13:02:021:37:1410:2632:58
10:37
-0:01
20K
12.43 mi13:36:272:11:3910:3634:25
11:05
+0:28
Half
13.11 mi13:43:492:19:0110:367:22
10:48
-0:17
25K
15.53 mi14:11:152:46:2710:4327:26
11:19
+0:31
30K
18.64 mi14:48:023:23:1410:5436:47
11:50
+0:31
20M
20.00 mi15:04:203:39:3210:5916:18
12:00
+0:10
21M
21.00 mi15:17:033:52:1511:0412:43
12:43
+0:43
35K
21.75 mi15:25:434:00:5511:058:40
11:35
-1:08
23M
23.00 mi15:40:504:16:0211:0815:07
12:04
+0:29
24M
24.00 mi15:52:254:27:3711:0911:35
11:35
-0:29
40K
24.85 mi16:03:294:38:4111:1311:04
12:57
+1:22
25.2M
25.20 mi16:08:074:43:1911:154:38
13:26
+0:29
Finish
26.22 mi16:19:404:54:5211:1511:33
11:20
-2:06

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

10:03 /mi

Average Pace

11:15 /mi

Slowest Pace

13:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:01

47% of race

Time at Steady Pace

1:52:19

38% of race

Time at Slower Pace

43:32

15% of race

Average Pace: 11:15 /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 mi11:56:0231:1410:0331:14
10:03
#25704
10K
6.21 mi12:29:041:04:1610:2133:02
10:38
#26174
15K
9.32 mi13:02:021:37:1410:2632:58
10:37
#26157
20K
12.43 mi13:36:272:11:3910:3634:25
11:05
#26143
Half
13.11 mi13:43:492:19:0110:367:22
10:48
#26146
25K
15.53 mi14:11:152:46:2710:4327:26
11:19
#26057
30K
18.64 mi14:48:023:23:1410:5436:47
11:50
#25912
20M
20.00 mi15:04:203:39:3210:5916:18
12:00
#25874
21M
21.00 mi15:17:033:52:1511:0412:43
12:43
#25821
35K
21.75 mi15:25:434:00:5511:058:40
11:35
#25812
23M
23.00 mi15:40:504:16:0211:0815:07
12:04
#25794
24M
24.00 mi15:52:254:27:3711:0911:35
11:35
#25779
40K
24.85 mi16:03:294:38:4111:1311:04
12:57
#25818
25.2M
25.20 mi16:08:074:43:1911:154:38
13:26
#25814
Finish
26.22 mi16:19:404:54:5211:1511:33
11:20
#25839
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi25704105891058926122(Top 92%)10857(Top 89%)10857(Top 4891%)
10K6.21 mi3.10 mi26174-47010866-27710866-27726492(Top 93%)11067(Top 91%)11067(Top 4985%)
15K9.32 mi3.11 mi26157+17108661086626122(Top 92%)10857(Top 89%)10857(Top 4891%)
20K12.43 mi3.11 mi26143+1410861+510861+526115(Top 92%)10869(Top 89%)10869(Top 4896%)
Half13.11 mi0.68 mi26146-310863-210863-226222(Top 92%)10952(Top 90%)10952(Top 4933%)
25K15.53 mi2.42 mi26057+8910830+3310830+3325630(Top 90%)10649(Top 87%)10649(Top 4797%)
30K18.64 mi3.11 mi25912+14510775+5510775+5525370(Top 89%)10599(Top 87%)10599(Top 4774%)
20M20.00 mi1.36 mi25874+3810767+810767+825246(Top 89%)10611(Top 87%)10611(Top 4780%)
21M21.00 mi1.00 mi25821+5310758+910758+924688(Top 87%)10395(Top 85%)10395(Top 4682%)
35K21.75 mi0.75 mi25812+910756+210756+225204(Top 89%)10696(Top 87%)10696(Top 4818%)
23M23.00 mi1.25 mi25794+1810758-210758-225218(Top 89%)10718(Top 88%)10718(Top 4828%)
24M24.00 mi1.00 mi25779+1510764-610764-625017(Top 88%)10641(Top 87%)10641(Top 4793%)
40K24.85 mi0.85 mi25818-3910793-2910793-2926230(Top 92%)11259(Top 92%)11259(Top 5072%)
25.2M25.20 mi0.35 mi25814+410794-110794-125566(Top 90%)10984(Top 90%)10984(Top 4948%)
Finish26.22 mi1.02 mi25839-2510814-2010814-2025901(Top 91%)11100(Top 91%)11100(Top 5000%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21stories
+97ft-345ft

Overall

26122

Females

10857

F65-69

10857

5K→10K

3.1 - 6.2 mi

Top 93%
×5stories
+79ft-138ft

Overall

26492

Females

11067

F65-69

11067

10K→15K

6.2 - 9.3 mi

Top 92%
×3stories
+67ft-78ft

Overall

26122

Females

10857

F65-69

10857

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

26115

Females

10869

F65-69

10869

20K→Half

12.4 - 13.1 mi

Top 92%
×2stories
+19ft-37ft

Overall

26222

Females

10952

F65-69

10952

Half→25K

13.1 - 15.5 mi

Top 90%
×4stories
+66ft-88ft

Overall

25630

Females

10649

F65-69

10649

25K→30K

15.5 - 18.6 mi

Top 89%
×9stories
+181ft-148ft

Overall

25370

Females

10599

F65-69

10599

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

25246

Females

10611

F65-69

10611

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

24688

Females

10395

F65-69

10395

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

25204

Females

10696

F65-69

10696

35K→23M

21.8 - 23.0 mi

Top 89%
×5stories
+23ft-63ft

Overall

25218

Females

10718

F65-69

10718

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

25017

Females

10641

F65-69

10641

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26230

Females

11259

F65-69

11259

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

25566

Females

10984

F65-69

10984

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2stories
+22ft-21ft

Overall

25901

Females

11100

F65-69

11100

Passing Analysis

Category:
Athletes Passed
974
Passed By
1109
Net Change
-135
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25704
5K → 10K56526-470#25704#26174
10K → 15K137120+17#26174#26157
15K → 20K130116+14#26157#26143
20K → Half2124-3#26143#26146
Half → 25K12637+89#26146#26057
25K → 30K19247+145#26057#25912
30K → 20M6931+38#25912#25874
20M → 21M7623+53#25874#25821
21M → 35K2819+9#25821#25812
35K → 23M5032+18#25812#25794
23M → 24M4328+15#25794#25779
24M → 40K1554-39#25779#25818
40K → 25.2M1511+4#25818#25814
25.2M → Finish1641-25#25814#25839
TOTALS9741109-135
📊

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