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BOSTON MARATHON 2026

Marguerite Mastrocola

Bib: 26880•F

MA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F50-54)
#0 / 1233
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
37:51
3.11 mi
Rank: #28862
Start → 5K
37:51 | 12:11/mi
10K
1:17:42
6.21 mi
Rank: #28899 (-37)
5K → 10K
39:51 | 12:50/mi
15K
1:58:41
9.32 mi
Rank: #28912 (-13)
10K → 15K
40:59 | 13:12/mi
20K
2:41:27
12.43 mi
Rank: #28916 (-4)
15K → 20K
42:46 | 13:46/mi
HALF
2:50:55
13.11 mi
Rank: #28927 (-11)
20K → HALF
9:28 | 13:54/mi
25K
3:26:48
15.53 mi
Rank: #28927
HALF → 25K
35:53 | 14:48/mi
30K
4:12:15
18.64 mi
Rank: #28922 (+5)
25K → 30K
45:27 | 14:38/mi
20M
4:33:28
20.00 mi
Rank: #28925 (-3)
30K → 20M
21:13 | 15:38/mi
21M
4:49:08
21.00 mi
Rank: #28922 (+3)
20M → 21M
15:40 | 15:40/mi
35K
4:59:37
21.75 mi
Rank: #28922
21M → 35K
10:29 | 14:01/mi
23M
5:17:28
23.00 mi
Rank: #28917 (+5)
35K → 23M
17:51 | 14:16/mi
24M
5:31:03
24.00 mi
Rank: #28912 (+5)
23M → 24M
13:35 | 13:35/mi
40K
5:42:39
24.85 mi
Rank: #28906 (+6)
24M → 40K
11:36 | 13:35/mi
25.2M
5:47:43
25.20 mi
Rank: #28906
40K → 25.2M
5:04 | 14:42/mi
FINISH
6:01:18
26.22 mi
Rank: #28905 (+1)
25.2M → FINISH
13:35 | 13:20/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:50:55
Pace13:03 /mi
2nd Half
Distance13.11 mi
Time3:10:23
Pace14:32 /mi
📊Positive Split: 11.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:59:0437:5112:1137:51
12:11
-
10K
6.21 mi12:38:551:17:4212:3139:51
12:50
+0:39
15K
9.32 mi13:19:541:58:4112:4540:59
13:12
+0:22
20K
12.43 mi14:02:402:41:2713:0042:46
13:46
+0:34
HALF
13.11 mi14:12:082:50:5513:039:28
13:54
+0:08
25K
15.53 mi14:48:013:26:4813:1935:53
14:48
+0:54
30K
18.64 mi15:33:284:12:1513:3245:27
14:38
-0:10
20M
20.00 mi15:54:414:33:2813:4121:13
15:38
+1:00
21M
21.00 mi16:10:214:49:0813:4715:40
15:40
+0:02
35K
21.75 mi16:20:504:59:3713:4710:29
14:01
-1:39
23M
23.00 mi16:38:415:17:2813:4917:51
14:16
+0:15
24M
24.00 mi16:52:165:31:0313:4813:35
13:35
-0:41
40K
24.85 mi17:03:525:42:3913:4811:36
13:35
0:00
25.2M
25.20 mi17:08:565:47:4313:485:04
14:42
+1:07
FINISH
26.22 mi17:22:316:01:1813:4813:35
13:20
-1:22

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

12:11 /mi

Average Pace

13:47 /mi

Slowest Pace

15:40 /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

2:12:16

37% of race

Time at Steady Pace

1:45:45

29% of race

Time at Slower Pace

2:03:17

34% of race

Average Pace: 13:47 /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 mi11:59:0437:5112:1137:51
12:11
#28862
10K
6.21 mi12:38:551:17:4212:3139:51
12:50
#28899
15K
9.32 mi13:19:541:58:4112:4540:59
13:12
#28912
20K
12.43 mi14:02:402:41:2713:0042:46
13:46
#28916
HALF
13.11 mi14:12:082:50:5513:039:28
13:54
#28927
25K
15.53 mi14:48:013:26:4813:1935:53
14:48
#28927
30K
18.64 mi15:33:284:12:1513:3245:27
14:38
#28922
20M
20.00 mi15:54:414:33:2813:4121:13
15:38
#28925
21M
21.00 mi16:10:214:49:0813:4715:40
15:40
#28922
35K
21.75 mi16:20:504:59:3713:4710:29
14:01
#28922
23M
23.00 mi16:38:415:17:2813:4917:51
14:16
#28917
24M
24.00 mi16:52:165:31:0313:4813:35
13:35
#28912
40K
24.85 mi17:03:525:42:3913:4811:36
13:35
#28906
25.2M
25.20 mi17:08:565:47:4313:485:04
14:42
#28906
FINISH
26.22 mi17:22:316:01:1813:4813:35
13:20
#28905
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi28862124681246828884(Top 100%)12488(Top 99%)12488(Top 1013%)
10K6.21 mi3.10 mi28899-3712497-2912497-2928903(Top 100%)12503(Top 99%)12503(Top 1014%)
15K9.32 mi3.11 mi28912-1312505-812505-828884(Top 100%)12488(Top 99%)12488(Top 1013%)
20K12.43 mi3.11 mi28916-412510-512510-528862(Top 99%)12483(Top 99%)12483(Top 1012%)
HALF13.11 mi0.68 mi28927-1112517-712517-728908(Top 100%)12524(Top 100%)12524(Top 1016%)
25K15.53 mi2.42 mi2892712516+112516+128890(Top 100%)12502(Top 99%)12502(Top 1014%)
30K18.64 mi3.11 mi28922+512518-212518-228664(Top 99%)12391(Top 99%)12391(Top 1005%)
20M20.00 mi1.36 mi28925-312521-312521-328761(Top 99%)12452(Top 99%)12452(Top 1010%)
21M21.00 mi1.00 mi28922+3125211252128434(Top 98%)12300(Top 98%)12300(Top 998%)
35K21.75 mi0.75 mi2892212519+212519+228361(Top 98%)12282(Top 98%)12282(Top 996%)
23M23.00 mi1.25 mi28917+512517+212517+228316(Top 98%)12252(Top 97%)12252(Top 994%)
24M24.00 mi1.00 mi28912+5125171251728087(Top 97%)12159(Top 97%)12159(Top 986%)
40K24.85 mi0.85 mi28906+612515+212515+227559(Top 95%)11896(Top 95%)11896(Top 965%)
25.2M25.20 mi0.35 mi2890612516-112516-127765(Top 96%)12018(Top 96%)12018(Top 975%)
FINISH26.22 mi1.02 mi28905+1125161251628410(Top 98%)12316(Top 98%)12316(Top 999%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 100%
×21
+97ft-345ft

Overall

28884

Females

12488

F50-54

12488

5K→10K

3.1 - 6.2 mi

Top 100%
×5
+79ft-138ft

Overall

28903

Females

12503

F50-54

12503

10K→15K

6.2 - 9.3 mi

Top 100%
×3
+67ft-78ft

Overall

28884

Females

12488

F50-54

12488

15K→20K

9.3 - 12.4 mi

Top 99%
×5
+106ft-86ft

Overall

28862

Females

12483

F50-54

12483

20K→HALF

12.4 - 13.1 mi

Top 100%
×2
+19ft-37ft

Overall

28908

Females

12524

F50-54

12524

HALF→25K

13.1 - 15.5 mi

Top 100%
×4
+66ft-88ft

Overall

28890

Females

12502

F50-54

12502

25K→30K

15.5 - 18.6 mi

Top 99%
×9
+181ft-148ft

Overall

28664

Females

12391

F50-54

12391

30K→20M

18.6 - 20.0 mi

Top 99%
×5
+64ft-50ft

Overall

28761

Females

12452

F50-54

12452

20M→21M

20.0 - 21.0 mi

Top 98%
×8
+106ft-24ft

Overall

28434

Females

12300

F50-54

12300

21M→35K

21.0 - 21.8 mi

Top 98%
×7
+17ft-86ft

Overall

28361

Females

12282

F50-54

12282

35K→23M

21.8 - 23.0 mi

Top 98%
×5
+23ft-63ft

Overall

28316

Females

12252

F50-54

12252

23M→24M

23.0 - 24.0 mi

Top 97%
×6
+12ft-82ft

Overall

28087

Females

12159

F50-54

12159

24M→40K

24.0 - 24.9 mi

Top 95%
×1
+6ft-20ft

Overall

27559

Females

11896

F50-54

11896

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1
+13ft-16ft

Overall

27765

Females

12018

F50-54

12018

25.2M→FINISH

25.2 - 26.2 mi

Top 98%
×2
+22ft-21ft

Overall

28410

Females

12316

F50-54

12316

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
119
Passed By
162
Net Change
-43
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28862
5K → 10K1653-37#28862#28899
10K → 15K1023-13#28899#28912
15K → 20K1620-4#28912#28916
20K → HALF011-11#28916#28927
HALF → 25K13130#28927#28927
25K → 30K1611+5#28927#28922
30K → 20M36-3#28922#28925
20M → 21M63+3#28925#28922
21M → 35K660#28922#28922
35K → 23M105+5#28922#28917
23M → 24M83+5#28917#28912
24M → 40K60+6#28912#28906
40K → 25.2M110#28906#28906
25.2M → FINISH87+1#28906#28905
TOTALS119162-43
📊

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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Export & Support

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing