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BOSTON MARATHON 2026

Catherine Breiwick

Bib: 20737•F

MN

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0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F45-49)
#0 / 1786
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
26:00
3.11 mi
Rank: #19343
Start → 5K
26:00 | 8:23/mi
10K
52:13
6.21 mi
Rank: #19651 (-308)
5K → 10K
26:13 | 8:27/mi
15K
1:19:41
9.32 mi
Rank: #20414 (-763)
10K → 15K
27:28 | 8:51/mi
20K
1:50:01
12.43 mi
Rank: #21795 (-1381)
15K → 20K
30:20 | 9:46/mi
HALF
1:56:10
13.11 mi
Rank: #21847 (-52)
20K → HALF
6:09 | 9:02/mi
25K
2:18:54
15.53 mi
Rank: #21982 (-135)
HALF → 25K
22:44 | 9:23/mi
30K
2:48:12
18.64 mi
Rank: #21869 (+113)
25K → 30K
29:18 | 9:26/mi
20M
3:00:21
20.00 mi
Rank: #21632 (+237)
30K → 20M
12:09 | 8:57/mi
21M
3:10:18
21.00 mi
Rank: #21555 (+77)
20M → 21M
9:57 | 9:57/mi
35K
3:16:48
21.75 mi
Rank: #21456 (+99)
21M → 35K
6:30 | 8:42/mi
23M
3:27:49
23.00 mi
Rank: #21253 (+203)
35K → 23M
11:01 | 8:49/mi
24M
3:36:10
24.00 mi
Rank: #21048 (+205)
23M → 24M
8:21 | 8:21/mi
40K
3:43:31
24.85 mi
Rank: #20888 (+160)
24M → 40K
7:21 | 8:36/mi
25.2M
3:47:02
25.20 mi
Rank: #20870 (+18)
40K → 25.2M
3:31 | 10:12/mi
FINISH
3:55:55
26.22 mi
Rank: #20832 (+38)
25.2M → FINISH
8:53 | 8:44/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:56:10
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time1:59:45
Pace9:09 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:0726:008:2326:00
8:23
-
10K
6.21 mi11:39:2052:138:2526:13
8:27
+0:04
15K
9.32 mi12:06:481:19:418:3327:28
8:51
+0:24
20K
12.43 mi12:37:081:50:018:5230:20
9:46
+0:55
HALF
13.11 mi12:43:171:56:108:526:09
9:02
-0:44
25K
15.53 mi13:06:012:18:548:5722:44
9:23
+0:21
30K
18.64 mi13:35:192:48:129:0229:18
9:26
+0:03
20M
20.00 mi13:47:283:00:219:0212:09
8:57
-0:29
21M
21.00 mi13:57:253:10:189:049:57
9:57
+1:00
35K
21.75 mi14:03:553:16:489:036:30
8:42
-1:15
23M
23.00 mi14:14:563:27:499:0311:01
8:49
+0:07
24M
24.00 mi14:23:173:36:109:018:21
8:21
-0:28
40K
24.85 mi14:30:383:43:319:007:21
8:36
+0:15
25.2M
25.20 mi14:34:093:47:029:013:31
10:12
+1:36
FINISH
26.22 mi14:43:023:55:559:018:53
8:44
-1:28

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:21 /mi

Average Pace

9:00 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:00:34

26% of race

Time at Steady Pace

1:19:31

34% of race

Time at Slower Pace

1:35:50

41% of race

Average Pace: 9:00 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:13:0726:008:2326:00
8:23
#19343
10K
6.21 mi11:39:2052:138:2526:13
8:27
#19651
15K
9.32 mi12:06:481:19:418:3327:28
8:51
#20414
20K
12.43 mi12:37:081:50:018:5230:20
9:46
#21795
HALF
13.11 mi12:43:171:56:108:526:09
9:02
#21847
25K
15.53 mi13:06:012:18:548:5722:44
9:23
#21982
30K
18.64 mi13:35:192:48:129:0229:18
9:26
#21869
20M
20.00 mi13:47:283:00:219:0212:09
8:57
#21632
21M
21.00 mi13:57:253:10:189:049:57
9:57
#21555
35K
21.75 mi14:03:553:16:489:036:30
8:42
#21456
23M
23.00 mi14:14:563:27:499:0311:01
8:49
#21253
24M
24.00 mi14:23:173:36:109:018:21
8:21
#21048
40K
24.85 mi14:30:383:43:319:007:21
8:36
#20888
25.2M
25.20 mi14:34:093:47:029:013:31
10:12
#20870
FINISH
26.22 mi14:43:023:55:559:018:53
8:44
#20832
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi193437274727421942(Top 76%)8611(Top 68%)8611(Top 482%)
10K6.21 mi3.10 mi19651-3087437-1637437-16320018(Top 69%)7604(Top 60%)7604(Top 426%)
15K9.32 mi3.11 mi20414-7637824-3877824-38721942(Top 76%)8611(Top 68%)8611(Top 482%)
20K12.43 mi3.11 mi21795-13818559-7358559-73524466(Top 84%)9919(Top 79%)9919(Top 555%)
HALF13.11 mi0.68 mi21847-528579-208579-2022860(Top 79%)9081(Top 72%)9081(Top 508%)
25K15.53 mi2.42 mi21982-1358647-688647-6822635(Top 78%)9001(Top 72%)9001(Top 504%)
30K18.64 mi3.11 mi21869+1138615+328615+3221397(Top 74%)8467(Top 67%)8467(Top 474%)
20M20.00 mi1.36 mi21632+2378517+988517+9818714(Top 64%)7150(Top 57%)7150(Top 400%)
21M21.00 mi1.00 mi21555+778486+318486+3120274(Top 70%)7999(Top 64%)7999(Top 448%)
35K21.75 mi0.75 mi21456+998438+488438+4818618(Top 64%)7233(Top 58%)7233(Top 405%)
23M23.00 mi1.25 mi21253+2038343+958343+9517492(Top 60%)6695(Top 53%)6695(Top 375%)
24M24.00 mi1.00 mi21048+2058247+968247+9616078(Top 55%)5965(Top 47%)5965(Top 334%)
40K24.85 mi0.85 mi20888+1608177+708177+7016329(Top 56%)6173(Top 49%)6173(Top 346%)
25.2M25.20 mi0.35 mi20870+188175+28175+220147(Top 69%)8143(Top 65%)8143(Top 456%)
FINISH26.22 mi1.02 mi20832+388162+138162+1319271(Top 66%)7697(Top 61%)7697(Top 431%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21
+97ft-345ft

Overall

21942

Females

8611

F45-49

8611

5K→10K

3.1 - 6.2 mi

Top 69%
×5
+79ft-138ft

Overall

20018

Females

7604

F45-49

7604

10K→15K

6.2 - 9.3 mi

Top 76%
×3
+67ft-78ft

Overall

21942

Females

8611

F45-49

8611

15K→20K

9.3 - 12.4 mi

Top 84%
×5
+106ft-86ft

Overall

24466

Females

9919

F45-49

9919

20K→HALF

12.4 - 13.1 mi

Top 79%
×2
+19ft-37ft

Overall

22860

Females

9081

F45-49

9081

HALF→25K

13.1 - 15.5 mi

Top 78%
×4
+66ft-88ft

Overall

22635

Females

9001

F45-49

9001

25K→30K

15.5 - 18.6 mi

Top 74%
×9
+181ft-148ft

Overall

21397

Females

8467

F45-49

8467

30K→20M

18.6 - 20.0 mi

Top 64%
×5
+64ft-50ft

Overall

18714

Females

7150

F45-49

7150

20M→21M

20.0 - 21.0 mi

Top 70%
×8
+106ft-24ft

Overall

20274

Females

7999

F45-49

7999

21M→35K

21.0 - 21.8 mi

Top 64%
×7
+17ft-86ft

Overall

18618

Females

7233

F45-49

7233

35K→23M

21.8 - 23.0 mi

Top 60%
×5
+23ft-63ft

Overall

17492

Females

6695

F45-49

6695

23M→24M

23.0 - 24.0 mi

Top 55%
×6
+12ft-82ft

Overall

16078

Females

5965

F45-49

5965

24M→40K

24.0 - 24.9 mi

Top 56%
×1
+6ft-20ft

Overall

16329

Females

6173

F45-49

6173

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1
+13ft-16ft

Overall

20147

Females

8143

F45-49

8143

25.2M→FINISH

25.2 - 26.2 mi

Top 66%
×2
+22ft-21ft

Overall

19271

Females

7697

F45-49

7697

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1674*
Passed By
1098
Net Change
-1489
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19343
5K → 10K149200-308#19343#19651
10K → 15K30200-763#19651#20414
15K → 20K10200-1381#20414#21795
20K → HALF1769-52#21795#21847
HALF → 25K89200-135#21847#21982
25K → 30K220*107+113#21982#21869
30K → 20M243*6+237#21869#21632
20M → 21M12346+77#21632#21555
21M → 35K1012+99#21555#21456
35K → 23M207*4+203#21456#21253
23M → 24M207*2+205#21253#21048
24M → 40K1644+160#21048#20888
40K → 25.2M3820+18#20888#20870
25.2M → FINISH7638+38#20870#20832
TOTALS1674*1098-1489

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing