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BOSTON MARATHON 2026

Susannah Castrovinci

Bib: 16329•F

MA

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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Age Group (F18-39)
#0 / 5716
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
28:08
3.11 mi
Rank: #22896
Start → 5K
28:08 | 9:04/mi
10K
55:19
6.21 mi
Rank: #22300 (+596)
5K → 10K
27:11 | 8:45/mi
15K
1:22:11
9.32 mi
Rank: #21860 (+440)
10K → 15K
26:52 | 8:39/mi
20K
1:49:11
12.43 mi
Rank: #21477 (+383)
15K → 20K
27:00 | 8:42/mi
HALF
1:55:07
13.11 mi
Rank: #21467 (+10)
20K → HALF
5:56 | 8:43/mi
25K
2:16:24
15.53 mi
Rank: #21233 (+234)
HALF → 25K
21:17 | 8:47/mi
30K
2:43:47
18.64 mi
Rank: #20772 (+461)
25K → 30K
27:23 | 8:49/mi
20M
2:56:14
20.00 mi
Rank: #20696 (+76)
30K → 20M
12:27 | 9:10/mi
21M
3:05:51
21.00 mi
Rank: #20585 (+111)
20M → 21M
9:37 | 9:37/mi
35K
3:12:41
21.75 mi
Rank: #20576 (+9)
21M → 35K
6:50 | 9:09/mi
23M
3:24:43
23.00 mi
Rank: #20618 (-42)
35K → 23M
12:02 | 9:37/mi
24M
3:34:07
24.00 mi
Rank: #20640 (-22)
23M → 24M
9:24 | 9:24/mi
40K
3:42:28
24.85 mi
Rank: #20684 (-44)
24M → 40K
8:21 | 9:46/mi
25.2M
3:46:06
25.20 mi
Rank: #20703 (-19)
40K → 25.2M
3:38 | 10:33/mi
FINISH
3:55:36
26.22 mi
Rank: #20767 (-64)
25.2M → FINISH
9:30 | 9:20/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:55:07
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time2:00:29
Pace9:12 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:57:0128:089:0428:08
9:04
-
10K
6.21 mi12:24:1255:198:5527:11
8:45
-0:19
15K
9.32 mi12:51:041:22:118:5026:52
8:39
-0:06
20K
12.43 mi13:18:041:49:118:4827:00
8:42
+0:03
HALF
13.11 mi13:24:001:55:078:475:56
8:43
+0:01
25K
15.53 mi13:45:172:16:248:4721:17
8:47
+0:04
30K
18.64 mi14:12:402:43:478:4827:23
8:49
+0:02
20M
20.00 mi14:25:072:56:148:4912:27
9:10
+0:21
21M
21.00 mi14:34:443:05:518:529:37
9:37
+0:27
35K
21.75 mi14:41:343:12:418:526:50
9:09
-0:28
23M
23.00 mi14:53:363:24:438:5512:02
9:37
+0:28
24M
24.00 mi15:03:003:34:078:569:24
9:24
-0:13
40K
24.85 mi15:11:213:42:288:588:21
9:46
+0:22
25.2M
25.20 mi15:14:593:46:068:593:38
10:33
+0:47
FINISH
26.22 mi15:24:293:55:369:009:30
9:20
-1:13

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

8:39 /mi

Average Pace

9:00 /mi

Slowest Pace

10:33 /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

2:15:39

58% of race

Time at Steady Pace

1:06:19

28% of race

Time at Slower Pace

33:38

14% of race

Average Pace: 8:59 /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 mi11:57:0128:089:0428:08
9:04
#22896
10K
6.21 mi12:24:1255:198:5527:11
8:45
#22300
15K
9.32 mi12:51:041:22:118:5026:52
8:39
#21860
20K
12.43 mi13:18:041:49:118:4827:00
8:42
#21477
HALF
13.11 mi13:24:001:55:078:475:56
8:43
#21467
25K
15.53 mi13:45:172:16:248:4721:17
8:47
#21233
30K
18.64 mi14:12:402:43:478:4827:23
8:49
#20772
20M
20.00 mi14:25:072:56:148:4912:27
9:10
#20696
21M
21.00 mi14:34:443:05:518:529:37
9:37
#20585
35K
21.75 mi14:41:343:12:418:526:50
9:09
#20576
23M
23.00 mi14:53:363:24:438:5512:02
9:37
#20618
24M
24.00 mi15:03:003:34:078:569:24
9:24
#20640
40K
24.85 mi15:11:213:42:288:588:21
9:46
#20684
25.2M
25.20 mi15:14:593:46:068:593:38
10:33
#20703
FINISH
26.22 mi15:24:293:55:369:009:30
9:20
#20767
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi228969122912220921(Top 72%)8082(Top 64%)8082(Top 141%)
10K6.21 mi3.10 mi22300+5968811+3118811+31121668(Top 75%)8476(Top 67%)8476(Top 148%)
15K9.32 mi3.11 mi21860+4408594+2178594+21720921(Top 72%)8082(Top 64%)8082(Top 141%)
20K12.43 mi3.11 mi21477+3838403+1918403+19120395(Top 70%)7839(Top 62%)7839(Top 137%)
HALF13.11 mi0.68 mi21467+108398+58398+521382(Top 74%)8309(Top 66%)8309(Top 145%)
25K15.53 mi2.42 mi21233+2348283+1158283+11520128(Top 69%)7733(Top 61%)7733(Top 135%)
30K18.64 mi3.11 mi20772+4618063+2208063+22018659(Top 64%)7037(Top 56%)7037(Top 123%)
20M20.00 mi1.36 mi20696+768028+358028+3519740(Top 68%)7684(Top 61%)7684(Top 134%)
21M21.00 mi1.00 mi20585+1117975+537975+5319073(Top 66%)7366(Top 59%)7366(Top 129%)
35K21.75 mi0.75 mi20576+97988-137988-1320579(Top 71%)8232(Top 65%)8232(Top 144%)
23M23.00 mi1.25 mi20618-428023-358023-3520988(Top 72%)8456(Top 67%)8456(Top 148%)
24M24.00 mi1.00 mi20640-228050-278050-2721001(Top 72%)8539(Top 68%)8539(Top 149%)
40K24.85 mi0.85 mi20684-448082-328082-3221260(Top 73%)8717(Top 69%)8717(Top 153%)
25.2M25.20 mi0.35 mi20703-198093-118093-1121185(Top 73%)8651(Top 69%)8651(Top 151%)
FINISH26.22 mi1.02 mi20767-648129-368129-3621748(Top 75%)8934(Top 71%)8934(Top 156%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21
+97ft-345ft

Overall

20921

Females

8082

F18-39

8082

5K→10K

3.1 - 6.2 mi

Top 75%
×5
+79ft-138ft

Overall

21668

Females

8476

F18-39

8476

10K→15K

6.2 - 9.3 mi

Top 72%
×3
+67ft-78ft

Overall

20921

Females

8082

F18-39

8082

15K→20K

9.3 - 12.4 mi

Top 70%
×5
+106ft-86ft

Overall

20395

Females

7839

F18-39

7839

20K→HALF

12.4 - 13.1 mi

Top 74%
×2
+19ft-37ft

Overall

21382

Females

8309

F18-39

8309

HALF→25K

13.1 - 15.5 mi

Top 69%
×4
+66ft-88ft

Overall

20128

Females

7733

F18-39

7733

25K→30K

15.5 - 18.6 mi

Top 64%
×9
+181ft-148ft

Overall

18659

Females

7037

F18-39

7037

30K→20M

18.6 - 20.0 mi

Top 68%
×5
+64ft-50ft

Overall

19740

Females

7684

F18-39

7684

20M→21M

20.0 - 21.0 mi

Top 66%
×8
+106ft-24ft

Overall

19073

Females

7366

F18-39

7366

21M→35K

21.0 - 21.8 mi

Top 71%
×7
+17ft-86ft

Overall

20579

Females

8232

F18-39

8232

35K→23M

21.8 - 23.0 mi

Top 72%
×5
+23ft-63ft

Overall

20988

Females

8456

F18-39

8456

23M→24M

23.0 - 24.0 mi

Top 72%
×6
+12ft-82ft

Overall

21001

Females

8539

F18-39

8539

24M→40K

24.0 - 24.9 mi

Top 73%
×1
+6ft-20ft

Overall

21260

Females

8717

F18-39

8717

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1
+13ft-16ft

Overall

21185

Females

8651

F18-39

8651

25.2M→FINISH

25.2 - 26.2 mi

Top 75%
×2
+22ft-21ft

Overall

21748

Females

8934

F18-39

8934

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2801*
Passed By
672
Net Change
+2129
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22896
5K → 10K678*82+596#22896#22300
10K → 15K471*31+440#22300#21860
15K → 20K410*27+383#21860#21477
20K → HALF3727+10#21477#21467
HALF → 25K251*17+234#21467#21233
25K → 30K466*5+461#21233#20772
30K → 20M11539+76#20772#20696
20M → 21M13928+111#20696#20585
21M → 35K4334+9#20585#20576
35K → 23M5698-42#20576#20618
23M → 24M5173-22#20618#20640
24M → 40K4387-44#20640#20684
40K → 25.2M1231-19#20684#20703
25.2M → FINISH2993-64#20703#20767
TOTALS2801*672+2129

* 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