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BOSTON MARATHON 2025

Carolyn Worster

Bib: 23070•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F45-49)
#0 / 1813
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
8:15/mi
25:38
↑ 97↓ 3451.5%
10K· 6.21 mi
8:34/mi
52:15
↑ 79↓ 1380.4%
15K· 9.32 mi
8:50/mi
1:19:41
↑ 67↓ 78
20K· 12.43 mi
9:11/mi
1:48:13
↑ 106↓ 860.1%
Half· 13.11 mi
9:13/mi
1:54:30
↑ 19↓ 370.5%
25K· 15.53 mi
9:37/mi
2:17:49
↑ 66↓ 880.2%
30K· 18.64 mi
10:24/mi
2:50:07
↑ 181↓ 1480.2%
20M
11:07/mi
3:05:13
↑ 64↓ 500.2%
21M
12:06/mi
3:17:19
↑ 106↓ 241.6%
35K· 21.75 mi
10:07/mi
3:24:53
↑ 17↓ 861.7%
23M
11:03/mi
3:38:43
↑ 23↓ 630.6%
24M
10:39/mi
3:49:22
↓ 821.3%
40K· 24.85 mi
11:07/mi
3:58:52
↓ 200.3%
25.2M
13:09/mi
4:03:24
↑ 13↓ 160.2%
Finish· 26.22 mi
9:56/mi
4:13:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:30
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:19:01
Pace10:36 /mi
📊Positive Split: 21.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3025:388:1525:38
8:15
-
10K
6.21 mi11:48:0752:158:2526:37
8:34
+0:19
15K
9.32 mi12:15:331:19:418:3327:26
8:50
+0:16
20K
12.43 mi12:44:051:48:138:4228:32
9:11
+0:21
Half
13.11 mi12:50:221:54:308:446:17
9:13
+0:02
25K
15.53 mi13:13:412:17:498:5223:19
9:37
+0:24
30K
18.64 mi13:45:592:50:079:0832:18
10:24
+0:47
20M
20.00 mi14:01:053:05:139:1615:06
11:07
+0:43
21M
21.00 mi14:13:113:17:199:2412:06
12:06
+0:59
35K
21.75 mi14:20:453:24:539:257:34
10:07
-1:59
23M
23.00 mi14:34:353:38:439:3113:50
11:03
+0:56
24M
24.00 mi14:45:143:49:229:3310:39
10:39
-0:24
40K
24.85 mi14:54:443:58:529:379:30
11:07
+0:28
25.2M
25.20 mi14:59:164:03:249:404:32
13:09
+2:02
Finish
26.22 mi15:09:234:13:319:4110:07
9:56
-3:13

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

8:15 /mi

Average Pace

9:41 /mi

Slowest Pace

13:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:30

45% of race

Time at Steady Pace

1:23:57

33% of race

Time at Slower Pace

55:04

22% of race

Average Pace: 9:40 /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 mi11:21:3025:388:1525:38
8:15
#18440
10K
6.21 mi11:48:0752:158:2526:37
8:34
#19300
15K
9.32 mi12:15:331:19:418:3327:26
8:50
#19981
20K
12.43 mi12:44:051:48:138:4228:32
9:11
#20467
Half
13.11 mi12:50:221:54:308:446:17
9:13
#20592
25K
15.53 mi13:13:412:17:498:5223:19
9:37
#20955
30K
18.64 mi13:45:592:50:079:0832:18
10:24
#21431
20M
20.00 mi14:01:053:05:139:1615:06
11:07
#21723
21M
21.00 mi14:13:113:17:199:2412:06
12:06
#21904
35K
21.75 mi14:20:453:24:539:257:34
10:07
#21907
23M
23.00 mi14:34:353:38:439:3113:50
11:03
#21988
24M
24.00 mi14:45:143:49:229:3310:39
10:39
#22045
40K
24.85 mi14:54:443:58:529:379:30
11:07
#22118
25.2M
25.20 mi14:59:164:03:249:404:32
13:09
#22188
Finish
26.22 mi15:09:234:13:319:4110:07
9:56
#22180
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi184406605660521185(Top 75%)8103(Top 66%)8103(Top 447%)
10K6.21 mi3.10 mi19300-8607069-4647069-46420198(Top 71%)7581(Top 62%)7581(Top 418%)
15K9.32 mi3.11 mi19981-6817454-3857454-38521185(Top 75%)8103(Top 66%)8103(Top 447%)
20K12.43 mi3.11 mi20467-4867742-2887742-28821834(Top 77%)8501(Top 70%)8501(Top 469%)
Half13.11 mi0.68 mi20592-1257810-687810-6822659(Top 80%)8963(Top 73%)8963(Top 494%)
25K15.53 mi2.42 mi20955-3638013-2038013-20322256(Top 78%)8791(Top 72%)8791(Top 485%)
30K18.64 mi3.11 mi21431-4768323-3108323-31022703(Top 80%)9160(Top 75%)9160(Top 505%)
20M20.00 mi1.36 mi21723-2928481-1588481-15823819(Top 84%)9858(Top 81%)9858(Top 544%)
21M21.00 mi1.00 mi21904-1818609-1288609-12823772(Top 84%)9899(Top 81%)9899(Top 546%)
35K21.75 mi0.75 mi21907-38627-188627-1822227(Top 78%)9149(Top 75%)9149(Top 505%)
23M23.00 mi1.25 mi21988-818711-848711-8423358(Top 82%)9785(Top 80%)9785(Top 540%)
24M24.00 mi1.00 mi22045-578765-548765-5423209(Top 82%)9736(Top 80%)9736(Top 537%)
40K24.85 mi0.85 mi22118-738825-608825-6023393(Top 82%)9892(Top 81%)9892(Top 546%)
25.2M25.20 mi0.35 mi22188-708866-418866-4125247(Top 89%)10812(Top 88%)10812(Top 596%)
Finish26.22 mi1.02 mi22180+88883-178883-1722715(Top 80%)9527(Top 78%)9527(Top 525%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21185

Females

8103

F45-49

8103

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

20198

Females

7581

F45-49

7581

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21185

Females

8103

F45-49

8103

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

21834

Females

8501

F45-49

8501

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

22659

Females

8963

F45-49

8963

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22256

Females

8791

F45-49

8791

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

22703

Females

9160

F45-49

9160

30K→20M

18.6 - 20.0 mi

Top 84%
×5story building
+64ft-50ft

Overall

23819

Females

9858

F45-49

9858

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23772

Females

9899

F45-49

9899

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

22227

Females

9149

F45-49

9149

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

23358

Females

9785

F45-49

9785

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23209

Females

9736

F45-49

9736

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

23393

Females

9892

F45-49

9892

40K→25.2M

24.9 - 25.2 mi

Top 89%
×1story
+13ft-16ft

Overall

25247

Females

10812

F45-49

10812

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22715

Females

9527

F45-49

9527

Passing Analysis

Category:
Athletes Passed
618
Passed By
4358
Net Change
-3740
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18440
5K → 10K60920-860#18440#19300
10K → 15K50731-681#19300#19981
15K → 20K71557-486#19981#20467
20K → Half10135-125#20467#20592
Half → 25K59422-363#20592#20955
25K → 30K100576-476#20955#21431
30K → 20M29321-292#21431#21723
20M → 21M30211-181#21723#21904
21M → 35K4346-3#21904#21907
35K → 23M56137-81#21907#21988
23M → 24M3491-57#21988#22045
24M → 40K2699-73#22045#22118
40K → 25.2M575-70#22118#22188
25.2M → Finish4537+8#22188#22180
TOTALS6184358-3740
📊

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