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BOSTON MARATHON 2025

Katie Margarson

Bib: 19558•F

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
28:47
Rank: #23442
Start → 5K
28:47 | 9:16/mi
10K· 6.21 mi
57:57
Rank: #23644 (-202)
5K → 10K
29:10 | 9:23/mi
15K· 9.32 mi
1:27:04
Rank: #23582 (+62)
10K → 15K
29:07 | 9:22/mi
20K· 12.43 mi
1:58:22
Rank: #23810 (-228)
15K → 20K
31:18 | 10:04/mi
Half· 13.11 mi
2:05:00
Rank: #23833 (-23)
20K → Half
6:38 | 9:43/mi
25K· 15.53 mi
2:28:39
Rank: #23604 (+229)
Half → 25K
23:39 | 9:45/mi
30K· 18.64 mi
3:00:35
Rank: #23369 (+235)
25K → 30K
31:56 | 10:17/mi
20M
3:14:17
Rank: #23193 (+176)
30K → 20M
13:42 | 10:05/mi
21M
3:25:20
Rank: #23086 (+107)
20M → 21M
11:03 | 11:03/mi
35K· 21.75 mi
3:32:16
Rank: #22975 (+111)
21M → 35K
6:56 | 9:16/mi
23M
3:44:25
Rank: #22779 (+196)
35K → 23M
12:09 | 9:42/mi
24M
3:54:20
Rank: #22674 (+105)
23M → 24M
9:55 | 9:55/mi
40K· 24.85 mi
4:02:50
Rank: #22596 (+78)
24M → 40K
8:30 | 9:56/mi
25.2M
4:06:25
Rank: #22545 (+51)
40K → 25.2M
3:35 | 10:23/mi
Finish· 26.22 mi
4:15:47
Rank: #22451 (+94)
25.2M → Finish
9:22 | 9:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:00
Pace9:32 /mi
2nd Half
Distance13.11 mi
Time2:10:47
Pace9:59 /mi
📊Positive Split: 4.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4328:479:1628:47
9:16
-
10K
6.21 mi11:49:5357:579:2029:10
9:23
+0:07
15K
9.32 mi12:19:001:27:049:2029:07
9:22
-0:01
20K
12.43 mi12:50:181:58:229:3131:18
10:04
+0:42
Half
13.11 mi12:56:562:05:009:326:38
9:43
-0:21
25K
15.53 mi13:20:352:28:399:3423:39
9:45
+0:02
30K
18.64 mi13:52:313:00:359:4131:56
10:17
+0:32
20M
20.00 mi14:06:133:14:179:4313:42
10:05
-0:12
21M
21.00 mi14:17:163:25:209:4711:03
11:03
+0:58
35K
21.75 mi14:24:123:32:169:466:56
9:16
-1:47
23M
23.00 mi14:36:213:44:259:4512:09
9:42
+0:26
24M
24.00 mi14:46:163:54:209:469:55
9:55
+0:13
40K
24.85 mi14:54:464:02:509:468:30
9:56
+0:01
25.2M
25.20 mi14:58:214:06:259:473:35
10:23
+0:27
Finish
26.22 mi15:07:434:15:479:469:22
9:11
-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

9:11 /mi

Average Pace

9:46 /mi

Slowest Pace

11:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:22

40% of race

Time at Steady Pace

1:00:51

24% of race

Time at Slower Pace

1:31:34

36% of race

Average Pace: 9:45 /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 mi11:20:4328:479:1628:47
9:16
#23442
10K
6.21 mi11:49:5357:579:2029:10
9:23
#23644
15K
9.32 mi12:19:001:27:049:2029:07
9:22
#23582
20K
12.43 mi12:50:181:58:229:3131:18
10:04
#23810
Half
13.11 mi12:56:562:05:009:326:38
9:43
#23833
25K
15.53 mi13:20:352:28:399:3423:39
9:45
#23604
30K
18.64 mi13:52:313:00:359:4131:56
10:17
#23369
20M
20.00 mi14:06:133:14:179:4313:42
10:05
#23193
21M
21.00 mi14:17:163:25:209:4711:03
11:03
#23086
35K
21.75 mi14:24:123:32:169:466:56
9:16
#22975
23M
23.00 mi14:36:213:44:259:4512:09
9:42
#22779
24M
24.00 mi14:46:163:54:209:469:55
9:55
#22674
40K
24.85 mi14:54:464:02:509:468:30
9:56
#22596
25.2M
25.20 mi14:58:214:06:259:473:35
10:23
#22545
Finish
26.22 mi15:07:434:15:479:469:22
9:11
#22451
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi234429407940723404(Top 82%)9319(Top 76%)9319(Top 170%)
10K6.21 mi3.10 mi23644-2029505-989505-9823798(Top 84%)9564(Top 78%)9564(Top 175%)
15K9.32 mi3.11 mi23582+629449+569449+5623404(Top 82%)9319(Top 76%)9319(Top 170%)
20K12.43 mi3.11 mi23810-2289588-1399588-13924397(Top 86%)9929(Top 81%)9929(Top 182%)
Half13.11 mi0.68 mi23833-239602-149602-1424172(Top 85%)9792(Top 80%)9792(Top 179%)
25K15.53 mi2.42 mi23604+2299480+1229480+12222660(Top 80%)9014(Top 74%)9014(Top 165%)
30K18.64 mi3.11 mi23369+2359387+939387+9322390(Top 79%)8993(Top 74%)8993(Top 164%)
20M20.00 mi1.36 mi23193+1769307+809307+8021236(Top 75%)8493(Top 69%)8493(Top 155%)
21M21.00 mi1.00 mi23086+1079267+409267+4021552(Top 76%)8742(Top 71%)8742(Top 160%)
35K21.75 mi0.75 mi22975+1119227+409227+4019497(Top 69%)7729(Top 63%)7729(Top 141%)
23M23.00 mi1.25 mi22779+1969144+839144+8319487(Top 69%)7782(Top 64%)7782(Top 142%)
24M24.00 mi1.00 mi22674+1059112+329112+3221130(Top 74%)8675(Top 71%)8675(Top 159%)
40K24.85 mi0.85 mi22596+789083+299083+2920296(Top 71%)8316(Top 68%)8316(Top 152%)
25.2M25.20 mi0.35 mi22545+519061+229061+2218683(Top 66%)7494(Top 61%)7494(Top 137%)
Finish26.22 mi1.02 mi22451+949031+309031+3019939(Top 70%)8120(Top 66%)8120(Top 148%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23404

Females

9319

F18-39

9319

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

23798

Females

9564

F18-39

9564

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23404

Females

9319

F18-39

9319

15K→20K

9.3 - 12.4 mi

Top 86%
×5stories
+106ft-86ft

Overall

24397

Females

9929

F18-39

9929

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24172

Females

9792

F18-39

9792

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22660

Females

9014

F18-39

9014

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

22390

Females

8993

F18-39

8993

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

21236

Females

8493

F18-39

8493

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21552

Females

8742

F18-39

8742

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19497

Females

7729

F18-39

7729

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

19487

Females

7782

F18-39

7782

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

21130

Females

8675

F18-39

8675

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20296

Females

8316

F18-39

8316

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18683

Females

7494

F18-39

7494

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19939

Females

8120

F18-39

8120

Passing Analysis

Category:
Athletes Passed
1952
Passed By
961
Net Change
+991
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23442
5K → 10K148350-202#23442#23644
10K → 15K197135+62#23644#23582
15K → 20K73301-228#23582#23810
20K → Half1841-23#23810#23833
Half → 25K24516+229#23833#23604
25K → 30K29661+235#23604#23369
30K → 20M1848+176#23369#23193
20M → 21M12114+107#23193#23086
21M → 35K1110+111#23086#22975
35K → 23M1993+196#22975#22779
23M → 24M11712+105#22779#22674
24M → 40K857+78#22674#22596
40K → 25.2M510+51#22596#22545
25.2M → Finish10713+94#22545#22451
TOTALS1952961+991
📊

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