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BOSTON MARATHON 2025

Samantha Ferrera

Bib: 27460•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

Start
0:00:00
Race begins
5K· 3.11 mi
29:21
Rank: #24066
Start → 5K
29:21 | 9:27/mi
10K· 6.21 mi
58:44
Rank: #24049 (+17)
5K → 10K
29:23 | 9:27/mi
15K· 9.32 mi
1:28:11
Rank: #23935 (+114)
10K → 15K
29:27 | 9:29/mi
20K· 12.43 mi
1:59:02
Rank: #23943 (-8)
15K → 20K
30:51 | 9:56/mi
Half· 13.11 mi
2:05:55
Rank: #24024 (-81)
20K → Half
6:53 | 10:05/mi
25K· 15.53 mi
2:31:39
Rank: #24137 (-113)
Half → 25K
25:44 | 10:37/mi
30K· 18.64 mi
3:05:14
Rank: #24064 (+73)
25K → 30K
33:35 | 10:49/mi
20M
3:19:51
Rank: #23994 (+70)
30K → 20M
14:37 | 10:45/mi
21M
3:31:33
Rank: #23924 (+70)
20M → 21M
11:42 | 11:42/mi
35K· 21.75 mi
3:39:54
Rank: #23959 (-35)
21M → 35K
8:21 | 11:10/mi
23M
3:54:41
Rank: #24010 (-51)
35K → 23M
14:47 | 11:48/mi
24M
4:06:36
Rank: #24110 (-100)
23M → 24M
11:55 | 11:55/mi
40K· 24.85 mi
4:17:17
Rank: #24212 (-102)
24M → 40K
10:41 | 12:30/mi
25.2M
4:21:43
Rank: #24219 (-7)
40K → 25.2M
4:26 | 12:51/mi
Finish· 26.22 mi
4:32:04
Rank: #24196 (+23)
25.2M → Finish
10:21 | 10:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:55
Pace9:36 /mi
2nd Half
Distance13.11 mi
Time2:26:09
Pace11:09 /mi
📊Positive Split: 16.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:3729:219:2729:21
9:27
-
10K
6.21 mi12:15:0058:449:2729:23
9:27
0:00
15K
9.32 mi12:44:271:28:119:2829:27
9:29
+0:02
20K
12.43 mi13:15:181:59:029:3530:51
9:56
+0:27
Half
13.11 mi13:22:112:05:559:366:53
10:05
+0:09
25K
15.53 mi13:47:552:31:399:4625:44
10:37
+0:32
30K
18.64 mi14:21:303:05:149:5633:35
10:49
+0:12
20M
20.00 mi14:36:073:19:5110:0014:37
10:45
-0:04
21M
21.00 mi14:47:493:31:3310:0411:42
11:42
+0:57
35K
21.75 mi14:56:103:39:5410:078:21
11:10
-0:32
23M
23.00 mi15:10:573:54:4110:1214:47
11:48
+0:38
24M
24.00 mi15:22:524:06:3610:1711:55
11:55
+0:07
40K
24.85 mi15:33:334:17:1710:2110:41
12:30
+0:35
25.2M
25.20 mi15:37:594:21:4310:234:26
12:51
+0:21
Finish
26.22 mi15:48:204:32:0410:2310:21
10:09
-2:42

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

9:27 /mi

Average Pace

10:23 /mi

Slowest Pace

12:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:16

50% of race

Time at Steady Pace

1:22:17

30% of race

Time at Slower Pace

53:31

20% of race

Average Pace: 10:23 /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 mi11:45:3729:219:2729:21
9:27
#24066
10K
6.21 mi12:15:0058:449:2729:23
9:27
#24049
15K
9.32 mi12:44:271:28:119:2829:27
9:29
#23935
20K
12.43 mi13:15:181:59:029:3530:51
9:56
#23943
Half
13.11 mi13:22:112:05:559:366:53
10:05
#24024
25K
15.53 mi13:47:552:31:399:4625:44
10:37
#24137
30K
18.64 mi14:21:303:05:149:5633:35
10:49
#24064
20M
20.00 mi14:36:073:19:5110:0014:37
10:45
#23994
21M
21.00 mi14:47:493:31:3310:0411:42
11:42
#23924
35K
21.75 mi14:56:103:39:5410:078:21
11:10
#23959
23M
23.00 mi15:10:573:54:4110:1214:47
11:48
#24010
24M
24.00 mi15:22:524:06:3610:1711:55
11:55
#24110
40K
24.85 mi15:33:334:17:1710:2110:41
12:30
#24212
25.2M
25.20 mi15:37:594:21:4310:234:26
12:51
#24219
Finish
26.22 mi15:48:204:32:0410:2310:21
10:09
#24196
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi240669732973223690(Top 83%)9485(Top 78%)9485(Top 173%)
10K6.21 mi3.10 mi24049+179713+199713+1924010(Top 85%)9688(Top 79%)9688(Top 177%)
15K9.32 mi3.11 mi23935+1149639+749639+7423690(Top 83%)9485(Top 78%)9485(Top 173%)
20K12.43 mi3.11 mi23943-89663-249663-2424096(Top 85%)9767(Top 80%)9767(Top 179%)
Half13.11 mi0.68 mi24024-819708-459708-4525020(Top 88%)10267(Top 84%)10267(Top 188%)
25K15.53 mi2.42 mi24137-1139782-749782-7424574(Top 87%)10058(Top 82%)10058(Top 184%)
30K18.64 mi3.11 mi24064+739764+189764+1823639(Top 83%)9673(Top 79%)9673(Top 177%)
20M20.00 mi1.36 mi23994+709748+169748+1623093(Top 81%)9468(Top 77%)9468(Top 173%)
21M21.00 mi1.00 mi23924+709723+259723+2523035(Top 81%)9520(Top 78%)9520(Top 174%)
35K21.75 mi0.75 mi23959-359762-399762-3924549(Top 86%)10358(Top 85%)10358(Top 189%)
23M23.00 mi1.25 mi24010-519801-399801-3924786(Top 87%)10488(Top 86%)10488(Top 192%)
24M24.00 mi1.00 mi24110-1009876-759876-7525575(Top 90%)10918(Top 89%)10918(Top 200%)
40K24.85 mi0.85 mi24212-1029931-559931-5525662(Top 90%)10976(Top 90%)10976(Top 201%)
25.2M25.20 mi0.35 mi24219-79945-149945-1424854(Top 88%)10603(Top 87%)10603(Top 194%)
Finish26.22 mi1.02 mi24196+239939+69939+623423(Top 82%)9890(Top 81%)9890(Top 181%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23690

Females

9485

F18-39

9485

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24010

Females

9688

F18-39

9688

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23690

Females

9485

F18-39

9485

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24096

Females

9767

F18-39

9767

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

25020

Females

10267

F18-39

10267

Half→25K

13.1 - 15.5 mi

Top 87%
×4stories
+66ft-88ft

Overall

24574

Females

10058

F18-39

10058

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

23639

Females

9673

F18-39

9673

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

23093

Females

9468

F18-39

9468

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

23035

Females

9520

F18-39

9520

21M→35K

21.0 - 21.8 mi

Top 86%
×7stories
+17ft-86ft

Overall

24549

Females

10358

F18-39

10358

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

24786

Females

10488

F18-39

10488

23M→24M

23.0 - 24.0 mi

Top 90%
×6stories
+12ft-82ft

Overall

25575

Females

10918

F18-39

10918

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25662

Females

10976

F18-39

10976

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

24854

Females

10603

F18-39

10603

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2stories
+22ft-21ft

Overall

23423

Females

9890

F18-39

9890

Passing Analysis

Category:
Athletes Passed
1253
Passed By
1383
Net Change
-130
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24066
5K → 10K241224+17#24066#24049
10K → 15K21298+114#24049#23935
15K → 20K136144-8#23935#23943
20K → Half889-81#23943#24024
Half → 25K77190-113#24024#24137
25K → 30K192119+73#24137#24064
30K → 20M10838+70#24064#23994
20M → 21M9626+70#23994#23924
21M → 35K3368-35#23924#23959
35K → 23M51102-51#23959#24010
23M → 24M21121-100#24010#24110
24M → 40K15117-102#24110#24212
40K → 25.2M2027-7#24212#24219
25.2M → Finish4320+23#24219#24196
TOTALS12531383-130
📊

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