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BOSTON MARATHON 2025

Samantha Kelly

Bib: 28206•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
12:58/mi
40:16
↑ 97↓ 3451.5%
10K· 6.21 mi
13:09/mi
1:21:06
↑ 79↓ 1380.4%
15K· 9.32 mi
13:20/mi
2:02:31
↑ 67↓ 78
20K· 12.43 mi
13:33/mi
2:44:37
↑ 106↓ 860.1%
Half· 13.11 mi
12:14/mi
2:52:58
↑ 19↓ 370.5%
25K· 15.53 mi
13:42/mi
3:26:10
↑ 66↓ 880.2%
30K· 18.64 mi
13:48/mi
4:09:01
↑ 181↓ 1480.2%
20M
14:05/mi
4:28:09
↑ 64↓ 500.2%
21M
17:05/mi
4:45:14
↑ 106↓ 241.6%
35K· 21.75 mi
13:33/mi
4:55:22
↑ 17↓ 861.7%
23M
13:49/mi
5:12:40
↑ 23↓ 630.6%
24M
12:54/mi
5:25:34
↓ 821.3%
40K· 24.85 mi
13:18/mi
5:36:56
↓ 200.3%
25.2M
14:04/mi
5:41:47
↑ 13↓ 160.2%
Finish· 26.22 mi
12:27/mi
5:54:28
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:52:58
Pace13:12 /mi
2nd Half
Distance13.11 mi
Time3:01:30
Pace13:51 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:57:0940:1612:5840:16
12:58
-
10K
6.21 mi12:37:591:21:0613:0340:50
13:09
+0:11
15K
9.32 mi13:19:242:02:3113:0941:25
13:20
+0:11
20K
12.43 mi14:01:302:44:3713:1542:06
13:33
+0:13
Half
13.11 mi14:09:512:52:5813:128:21
12:14
-1:19
25K
15.53 mi14:43:033:26:1013:1633:12
13:42
+1:28
30K
18.64 mi15:25:544:09:0113:2242:51
13:48
+0:06
20M
20.00 mi15:45:024:28:0913:2419:08
14:05
+0:17
21M
21.00 mi16:02:074:45:1413:3517:05
17:05
+3:00
35K
21.75 mi16:12:154:55:2213:3510:08
13:33
-3:32
23M
23.00 mi16:29:335:12:4013:3617:18
13:49
+0:16
24M
24.00 mi16:42:275:25:3413:3412:54
12:54
-0:55
40K
24.85 mi16:53:495:36:5613:3311:22
13:18
+0:24
25.2M
25.20 mi16:58:405:41:4713:344:51
14:04
+0:46
Finish
26.22 mi17:11:215:54:2813:3212:41
12:27
-1:37

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

12:14 /mi

Average Pace

13:32 /mi

Slowest Pace

17:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:12

21% of race

Time at Steady Pace

4:23:11

74% of race

Time at Slower Pace

17:05

5% of race

Average Pace: 13:31 /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 mi11:57:0940:1612:5840:16
12:58
#28377
10K
6.21 mi12:37:591:21:0613:0340:50
13:09
#28366
15K
9.32 mi13:19:242:02:3113:0941:25
13:20
#28358
20K
12.43 mi14:01:302:44:3713:1542:06
13:33
#28338
Half
13.11 mi14:09:512:52:5813:128:21
12:14
#28328
25K
15.53 mi14:43:033:26:1013:1633:12
13:42
#28296
30K
18.64 mi15:25:544:09:0113:2242:51
13:48
#28231
20M
20.00 mi15:45:024:28:0913:2419:08
14:05
#28197
21M
21.00 mi16:02:074:45:1413:3517:05
17:05
#28224
35K
21.75 mi16:12:154:55:2213:3510:08
13:33
#28213
23M
23.00 mi16:29:335:12:4013:3617:18
13:49
#28180
24M
24.00 mi16:42:275:25:3413:3412:54
12:54
#28159
40K
24.85 mi16:53:495:36:5613:3311:22
13:18
#28126
25.2M
25.20 mi16:58:405:41:4713:344:51
14:04
#28119
Finish
26.22 mi17:11:215:54:2813:3212:41
12:27
#28104
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi28377122121221228268(Top 100%)12154(Top 99%)12154(Top 222%)
10K6.21 mi3.10 mi28366+1112206+612206+628336(Top 100%)12188(Top 100%)12188(Top 223%)
15K9.32 mi3.11 mi28358+812200+612200+628268(Top 100%)12154(Top 99%)12154(Top 222%)
20K12.43 mi3.11 mi28338+2012192+812192+828094(Top 99%)12057(Top 99%)12057(Top 220%)
Half13.11 mi0.68 mi28328+1012185+712185+727619(Top 97%)11783(Top 96%)11783(Top 215%)
25K15.53 mi2.42 mi28296+3212172+1312172+1327730(Top 98%)11850(Top 97%)11850(Top 217%)
30K18.64 mi3.11 mi28231+6512133+3912133+3927358(Top 96%)11692(Top 96%)11692(Top 214%)
20M20.00 mi1.36 mi28197+3412113+2012113+2027353(Top 96%)11741(Top 96%)11741(Top 215%)
21M21.00 mi1.00 mi28224-2712130-1712130-1728166(Top 99%)12131(Top 99%)12131(Top 222%)
35K21.75 mi0.75 mi28213+1112128+212128+227393(Top 96%)11790(Top 96%)11790(Top 216%)
23M23.00 mi1.25 mi28180+3312114+1412114+1427168(Top 96%)11688(Top 96%)11688(Top 214%)
24M24.00 mi1.00 mi28159+2112102+1212102+1226742(Top 94%)11509(Top 94%)11509(Top 210%)
40K24.85 mi0.85 mi28126+3312086+1612086+1626583(Top 94%)11440(Top 94%)11440(Top 209%)
25.2M25.20 mi0.35 mi28119+712083+312083+326341(Top 93%)11362(Top 93%)11362(Top 208%)
Finish26.22 mi1.02 mi28104+1512076+712076+727249(Top 96%)11747(Top 96%)11747(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 100%
×21story building
+97ft-345ft

Overall

28268

Females

12154

F18-39

12154

5K→10K

3.1 - 6.2 mi

Top 100%
×5story building
+79ft-138ft

Overall

28336

Females

12188

F18-39

12188

10K→15K

6.2 - 9.3 mi

Top 100%
×3story building
+67ft-78ft

Overall

28268

Females

12154

F18-39

12154

15K→20K

9.3 - 12.4 mi

Top 99%
×5story building
+106ft-86ft

Overall

28094

Females

12057

F18-39

12057

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

27619

Females

11783

F18-39

11783

Half→25K

13.1 - 15.5 mi

Top 98%
×4story building
+66ft-88ft

Overall

27730

Females

11850

F18-39

11850

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

27358

Females

11692

F18-39

11692

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27353

Females

11741

F18-39

11741

20M→21M

20.0 - 21.0 mi

Top 99%
×8story building
+106ft-24ft

Overall

28166

Females

12131

F18-39

12131

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

27393

Females

11790

F18-39

11790

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27168

Females

11688

F18-39

11688

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26742

Females

11509

F18-39

11509

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

26583

Females

11440

F18-39

11440

40K→25.2M

24.9 - 25.2 mi

Top 93%
×1story
+13ft-16ft

Overall

26341

Females

11362

F18-39

11362

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

27249

Females

11747

F18-39

11747

Passing Analysis

Category:
Athletes Passed
333
Passed By
60
Net Change
+273
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28377
5K → 10K165+11#28377#28366
10K → 15K102+8#28366#28358
15K → 20K222+20#28358#28338
20K → Half111+10#28338#28328
Half → 25K320+32#28328#28296
25K → 30K694+65#28296#28231
30K → 20M373+34#28231#28197
20M → 21M633-27#28197#28224
21M → 35K154+11#28224#28213
35K → 23M341+33#28213#28180
23M → 24M221+21#28180#28159
24M → 40K330+33#28159#28126
40K → 25.2M70+7#28126#28119
25.2M → Finish194+15#28119#28104
TOTALS33360+273
📊

Passing Visuals

Category:
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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