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BOSTON MARATHON 2025

Claire Kivlin

Bib: 22989•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 43%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:07
Rank: #17260
Start → 5K
25:07 | 8:05/mi
10K· 6.21 mi
50:28
Rank: #17428 (-168)
5K → 10K
25:21 | 8:10/mi
15K· 9.32 mi
1:16:12
Rank: #17609 (-181)
10K → 15K
25:44 | 8:17/mi
20K· 12.43 mi
1:42:30
Rank: #17672 (-63)
15K → 20K
26:18 | 8:28/mi
Half· 13.11 mi
1:48:13
Rank: #17704 (-32)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:08:47
Rank: #17546 (+158)
Half → 25K
20:34 | 8:29/mi
30K· 18.64 mi
2:36:36
Rank: #17472 (+74)
25K → 30K
27:49 | 8:57/mi
20M
2:49:27
Rank: #17593 (-121)
30K → 20M
12:51 | 9:27/mi
21M
2:59:48
Rank: #17771 (-178)
20M → 21M
10:21 | 10:21/mi
35K· 21.75 mi
3:06:39
Rank: #17816 (-45)
21M → 35K
6:51 | 9:09/mi
23M
3:18:19
Rank: #17802 (+14)
35K → 23M
11:40 | 9:19/mi
24M
3:27:28
Rank: #17797 (+5)
23M → 24M
9:09 | 9:09/mi
40K· 24.85 mi
3:35:25
Rank: #17804 (-7)
24M → 40K
7:57 | 9:18/mi
25.2M
3:38:57
Rank: #17807 (-3)
40K → 25.2M
3:32 | 10:15/mi
Finish· 26.22 mi
3:48:18
Rank: #17911 (-104)
25.2M → Finish
9:21 | 9:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:13
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time2:00:05
Pace9:10 /mi
📊Positive Split: 11.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:3025:078:0525:07
8:05
-
10K
6.21 mi11:48:5150:288:0725:21
8:10
+0:05
15K
9.32 mi12:14:351:16:128:1125:44
8:17
+0:07
20K
12.43 mi12:40:531:42:308:1526:18
8:28
+0:11
Half
13.11 mi12:46:361:48:138:155:43
8:23
-0:05
25K
15.53 mi13:07:102:08:478:1720:34
8:29
+0:06
30K
18.64 mi13:34:592:36:368:2427:49
8:57
+0:28
20M
20.00 mi13:47:502:49:278:2812:51
9:27
+0:30
21M
21.00 mi13:58:112:59:488:3410:21
10:21
+0:54
35K
21.75 mi14:05:023:06:398:356:51
9:09
-1:12
23M
23.00 mi14:16:423:18:198:3711:40
9:19
+0:10
24M
24.00 mi14:25:513:27:288:399:09
9:09
-0:10
40K
24.85 mi14:33:483:35:258:407:57
9:18
+0:09
25.2M
25.20 mi14:37:203:38:578:413:32
10:15
+0:57
Finish
26.22 mi14:46:413:48:188:439:21
9:11
-1:04

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

8:05 /mi

Average Pace

8:43 /mi

Slowest Pace

10:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:47

56% of race

Time at Steady Pace

1:25:38

38% of race

Time at Slower Pace

13:53

6% of race

Average Pace: 8:42 /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 mi11:23:3025:078:0525:07
8:05
#17260
10K
6.21 mi11:48:5150:288:0725:21
8:10
#17428
15K
9.32 mi12:14:351:16:128:1125:44
8:17
#17609
20K
12.43 mi12:40:531:42:308:1526:18
8:28
#17672
Half
13.11 mi12:46:361:48:138:155:43
8:23
#17704
25K
15.53 mi13:07:102:08:478:1720:34
8:29
#17546
30K
18.64 mi13:34:592:36:368:2427:49
8:57
#17472
20M
20.00 mi13:47:502:49:278:2812:51
9:27
#17593
21M
21.00 mi13:58:112:59:488:3410:21
10:21
#17771
35K
21.75 mi14:05:023:06:398:356:51
9:09
#17816
23M
23.00 mi14:16:423:18:198:3711:40
9:19
#17802
24M
24.00 mi14:25:513:27:288:399:09
9:09
#17797
40K
24.85 mi14:33:483:35:258:407:57
9:18
#17804
25.2M
25.20 mi14:37:203:38:578:413:32
10:15
#17807
Finish
26.22 mi14:46:413:48:188:439:21
9:11
#17911
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi172605895589517944(Top 63%)6283(Top 51%)6283(Top 347%)
10K6.21 mi3.10 mi17428-1685993-985993-9817629(Top 62%)6077(Top 50%)6077(Top 335%)
15K9.32 mi3.11 mi17609-1816085-926085-9217944(Top 63%)6283(Top 51%)6283(Top 347%)
20K12.43 mi3.11 mi17672-636142-576142-5718002(Top 63%)6342(Top 52%)6342(Top 350%)
Half13.11 mi0.68 mi17704-326159-176159-1718522(Top 65%)6636(Top 54%)6636(Top 366%)
25K15.53 mi2.42 mi17546+1586089+706089+7017106(Top 60%)5919(Top 48%)5919(Top 326%)
30K18.64 mi3.11 mi17472+746103-146103-1417441(Top 61%)6272(Top 51%)6272(Top 346%)
20M20.00 mi1.36 mi17593-1216202-996202-9918986(Top 67%)7245(Top 59%)7245(Top 400%)
21M21.00 mi1.00 mi17771-1786309-1076309-10719542(Top 69%)7643(Top 63%)7643(Top 422%)
35K21.75 mi0.75 mi17816-456341-326341-3219002(Top 67%)7453(Top 61%)7453(Top 411%)
23M23.00 mi1.25 mi17802+146385-446385-4417864(Top 63%)6921(Top 57%)6921(Top 382%)
24M24.00 mi1.00 mi17797+56423-386423-3818128(Top 64%)7102(Top 58%)7102(Top 392%)
40K24.85 mi0.85 mi17804-76439-166439-1617865(Top 63%)7064(Top 58%)7064(Top 390%)
25.2M25.20 mi0.35 mi17807-36450-116450-1118124(Top 64%)7199(Top 59%)7199(Top 397%)
Finish26.22 mi1.02 mi17911-1046519-696519-6919848(Top 70%)8058(Top 66%)8058(Top 444%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

17944

Females

6283

F45-49

6283

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

17629

Females

6077

F45-49

6077

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

17944

Females

6283

F45-49

6283

15K→20K

9.3 - 12.4 mi

Top 63%
×5stories
+106ft-86ft

Overall

18002

Females

6342

F45-49

6342

20K→Half

12.4 - 13.1 mi

Top 65%
×2stories
+19ft-37ft

Overall

18522

Females

6636

F45-49

6636

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

17106

Females

5919

F45-49

5919

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

17441

Females

6272

F45-49

6272

30K→20M

18.6 - 20.0 mi

Top 67%
×5stories
+64ft-50ft

Overall

18986

Females

7245

F45-49

7245

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19542

Females

7643

F45-49

7643

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

19002

Females

7453

F45-49

7453

35K→23M

21.8 - 23.0 mi

Top 63%
×5stories
+23ft-63ft

Overall

17864

Females

6921

F45-49

6921

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

18128

Females

7102

F45-49

7102

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17865

Females

7064

F45-49

7064

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18124

Females

7199

F45-49

7199

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19848

Females

8058

F45-49

8058

Passing Analysis

Category:
Athletes Passed
1559
Passed By
2210
Net Change
-651
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17260
5K → 10K219387-168#17260#17428
10K → 15K137318-181#17428#17609
15K → 20K170233-63#17609#17672
20K → Half2254-32#17672#17704
Half → 25K23981+158#17704#17546
25K → 30K257183+74#17546#17472
30K → 20M81202-121#17472#17593
20M → 21M52230-178#17593#17771
21M → 35K55100-45#17771#17816
35K → 23M11399+14#17816#17802
23M → 24M8580+5#17802#17797
24M → 40K5360-7#17797#17804
40K → 25.2M3437-3#17804#17807
25.2M → Finish42146-104#17807#17911
TOTALS15592210-651
📊

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