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BOSTON MARATHON 2025

Kristen Sampson

Bib: 29795•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 (F55-59)
#0 / 994
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
36:09
Rank: #28094
Start → 5K
36:09 | 11:38/mi
10K· 6.21 mi
1:17:30
Rank: #28279 (-185)
5K → 10K
41:21 | 13:19/mi
15K· 9.32 mi
1:56:42
Rank: #28239 (+40)
10K → 15K
39:12 | 12:37/mi
20K· 12.43 mi
2:37:55
Rank: #28202 (+37)
15K → 20K
41:13 | 13:16/mi
Half· 13.11 mi
2:46:50
Rank: #28203 (-1)
20K → Half
8:55 | 13:04/mi
25K· 15.53 mi
3:24:39
Rank: #28274 (-71)
Half → 25K
37:49 | 15:36/mi
30K· 18.64 mi
4:09:37
Rank: #28242 (+32)
25K → 30K
44:58 | 14:28/mi
20M
4:31:51
Rank: #28266 (-24)
30K → 20M
22:14 | 16:22/mi
21M
4:47:46
Rank: #28261 (+5)
20M → 21M
15:55 | 15:55/mi
35K· 21.75 mi
4:57:52
Rank: #28249 (+12)
21M → 35K
10:06 | 13:30/mi
23M
5:15:38
Rank: #28239 (+10)
35K → 23M
17:46 | 14:11/mi
24M
5:29:36
Rank: #28230 (+9)
23M → 24M
13:58 | 13:58/mi
40K· 24.85 mi
5:42:09
Rank: #28223 (+7)
24M → 40K
12:33 | 14:41/mi
25.2M
5:47:29
Rank: #28221 (+2)
40K → 25.2M
5:20 | 15:28/mi
Finish· 26.22 mi
6:01:29
Rank: #28221
25.2M → Finish
14:00 | 13:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:46:50
Pace12:44 /mi
2nd Half
Distance13.11 mi
Time3:14:39
Pace14:51 /mi
📊Positive Split: 16.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:56:3936:0911:3836:09
11:38
-
10K
6.21 mi12:38:001:17:3012:2841:21
13:19
+1:41
15K
9.32 mi13:17:121:56:4212:3139:12
12:37
-0:42
20K
12.43 mi13:58:252:37:5512:4241:13
13:16
+0:39
Half
13.11 mi14:07:202:46:5012:448:55
13:04
-0:12
25K
15.53 mi14:45:093:24:3913:1037:49
15:36
+2:32
30K
18.64 mi15:30:074:09:3713:2344:58
14:28
-1:08
20M
20.00 mi15:52:214:31:5113:3622:14
16:22
+1:54
21M
21.00 mi16:08:164:47:4613:4215:55
15:55
-0:27
35K
21.75 mi16:18:224:57:5213:4210:06
13:30
-2:25
23M
23.00 mi16:36:085:15:3813:4317:46
14:11
+0:41
24M
24.00 mi16:50:065:29:3613:4413:58
13:58
-0:13
40K
24.85 mi17:02:395:42:0913:4612:33
14:41
+0:43
25.2M
25.20 mi17:07:595:47:2913:475:20
15:28
+0:47
Finish
26.22 mi17:21:596:01:2913:4814:00
13:44
-1:44

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

11:38 /mi

Average Pace

13:48 /mi

Slowest Pace

16:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:46:50

46% of race

Time at Steady Pace

1:40:48

28% of race

Time at Slower Pace

1:33:51

26% of race

Average Pace: 13:47 /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 mi11:56:3936:0911:3836:09
11:38
#28094
10K
6.21 mi12:38:001:17:3012:2841:21
13:19
#28279
15K
9.32 mi13:17:121:56:4212:3139:12
12:37
#28239
20K
12.43 mi13:58:252:37:5512:4241:13
13:16
#28202
Half
13.11 mi14:07:202:46:5012:448:55
13:04
#28203
25K
15.53 mi14:45:093:24:3913:1037:49
15:36
#28274
30K
18.64 mi15:30:074:09:3713:2344:58
14:28
#28242
20M
20.00 mi15:52:214:31:5113:3622:14
16:22
#28266
21M
21.00 mi16:08:164:47:4613:4215:55
15:55
#28261
35K
21.75 mi16:18:224:57:5213:4210:06
13:30
#28249
23M
23.00 mi16:36:085:15:3813:4317:46
14:11
#28239
24M
24.00 mi16:50:065:29:3613:4413:58
13:58
#28230
40K
24.85 mi17:02:395:42:0913:4612:33
14:41
#28223
25.2M
25.20 mi17:07:595:47:2913:475:20
15:28
#28221
Finish
26.22 mi17:21:596:01:2913:4814:00
13:44
#28221
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi28094120221202228000(Top 99%)11978(Top 98%)11978(Top 1205%)
10K6.21 mi3.10 mi28279-18512151-12912151-12928351(Top 100%)12198(Top 100%)12198(Top 1227%)
15K9.32 mi3.11 mi28239+4012126+2512126+2528000(Top 99%)11978(Top 98%)11978(Top 1205%)
20K12.43 mi3.11 mi28202+3712106+2012106+2027966(Top 98%)11977(Top 98%)11977(Top 1205%)
Half13.11 mi0.68 mi28203-112108-212108-228035(Top 99%)12030(Top 98%)12030(Top 1210%)
25K15.53 mi2.42 mi28274-7112155-4712155-4728319(Top 100%)12190(Top 100%)12190(Top 1226%)
30K18.64 mi3.11 mi28242+3212140+1512140+1527788(Top 98%)11941(Top 98%)11941(Top 1201%)
20M20.00 mi1.36 mi28266-2412158-1812158-1828237(Top 99%)12163(Top 99%)12163(Top 1224%)
21M21.00 mi1.00 mi28261+5121581215827767(Top 98%)11939(Top 98%)11939(Top 1201%)
35K21.75 mi0.75 mi28249+1212153+512153+527367(Top 96%)11782(Top 96%)11782(Top 1185%)
23M23.00 mi1.25 mi28239+1012149+412149+427468(Top 97%)11838(Top 97%)11838(Top 1191%)
24M24.00 mi1.00 mi28230+912146+312146+327619(Top 97%)11950(Top 98%)11950(Top 1202%)
40K24.85 mi0.85 mi28223+712145+112145+127606(Top 97%)11924(Top 98%)11924(Top 1200%)
25.2M25.20 mi0.35 mi28221+212142+312142+327433(Top 97%)11862(Top 97%)11862(Top 1193%)
Finish26.22 mi1.02 mi2822112143-112143-127955(Top 98%)12071(Top 99%)12071(Top 1214%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

28000

Females

11978

F55-59

11978

5K→10K

3.1 - 6.2 mi

Top 100%
×5stories
+79ft-138ft

Overall

28351

Females

12198

F55-59

12198

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

28000

Females

11978

F55-59

11978

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

27966

Females

11977

F55-59

11977

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

28035

Females

12030

F55-59

12030

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

28319

Females

12190

F55-59

12190

25K→30K

15.5 - 18.6 mi

Top 98%
×9stories
+181ft-148ft

Overall

27788

Females

11941

F55-59

11941

30K→20M

18.6 - 20.0 mi

Top 99%
×5stories
+64ft-50ft

Overall

28237

Females

12163

F55-59

12163

20M→21M

20.0 - 21.0 mi

Top 98%
×8stories
+106ft-24ft

Overall

27767

Females

11939

F55-59

11939

21M→35K

21.0 - 21.8 mi

Top 96%
×7stories
+17ft-86ft

Overall

27367

Females

11782

F55-59

11782

35K→23M

21.8 - 23.0 mi

Top 97%
×5stories
+23ft-63ft

Overall

27468

Females

11838

F55-59

11838

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

27619

Females

11950

F55-59

11950

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

27606

Females

11924

F55-59

11924

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

27433

Females

11862

F55-59

11862

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

27955

Females

12071

F55-59

12071

Passing Analysis

Category:
Athletes Passed
225
Passed By
352
Net Change
-127
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28094
5K → 10K7192-185#28094#28279
10K → 15K466+40#28279#28239
15K → 20K5013+37#28239#28202
20K → Half910-1#28202#28203
Half → 25K677-71#28203#28274
25K → 30K408+32#28274#28242
30K → 20M226-24#28242#28266
20M → 21M72+5#28266#28261
21M → 35K120+12#28261#28249
35K → 23M133+10#28249#28239
23M → 24M101+9#28239#28230
24M → 40K125+7#28230#28223
40K → 25.2M53+2#28223#28221
25.2M → Finish660#28221#28221
TOTALS225352-127
📊

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