Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing

Sandra Slaughter

Bib: 19672FAge: N/A

AR

Boston Marathon logo
0:00
0:00
/ mi
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Top 41%
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
24:00
3.11 mi
Rank: #14797
Start5K
24:00 | 7:44/mi
10K
47:58
6.21 mi
Rank: #14804 (-7)
5K10K
23:58 | 7:43/mi
15K
1:11:53
9.32 mi
Rank: #14651 (+153)
10K15K
23:55 | 7:42/mi
20K
1:36:16
12.43 mi
Rank: #14704 (-53)
15K20K
24:23 | 7:51/mi
HALF
1:41:35
13.11 mi
Rank: #14746 (-42)
20KHALF
5:19 | 7:48/mi
25K
2:01:09
15.53 mi
Rank: #14933 (-187)
HALF25K
19:34 | 8:05/mi
30K
2:27:10
18.64 mi
Rank: #15145 (-212)
25K30K
26:01 | 8:23/mi
20M
2:38:47
20.00 mi
Rank: #15249 (-104)
30K20M
11:37 | 8:34/mi
21M
2:48:06
21.00 mi
Rank: #15408 (-159)
20M21M
9:19 | 9:19/mi
35K
2:54:04
21.75 mi
Rank: #15340 (+68)
21M35K
5:58 | 7:59/mi
23M
3:04:47
23.00 mi
Rank: #15390 (-50)
35K23M
10:43 | 8:34/mi
24M
3:12:56
24.00 mi
Rank: #15360 (+30)
23M24M
8:09 | 8:09/mi
40K
3:20:11
24.85 mi
Rank: #15354 (+6)
24M40K
7:15 | 8:29/mi
25.2M
3:23:16
25.20 mi
Rank: #15342 (+12)
40K25.2M
3:05 | 8:57/mi
FINISH
3:31:35
26.22 mi
Rank: #15378 (-36)
25.2MFINISH
8:19 | 8:10/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:41:35
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time1:50:00
Pace8:24 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:07:5124:007:4424:00
7:44
-
10K
6.21 mi11:31:4947:587:4423:58
7:43
-0:01
15K
9.32 mi11:55:441:11:537:4323:55
7:42
-0:01
20K
12.43 mi12:20:071:36:167:4524:23
7:51
+0:09
HALF
13.11 mi12:25:261:41:357:455:19
7:48
-0:03
25K
15.53 mi12:45:002:01:097:4819:34
8:05
+0:17
30K
18.64 mi13:11:012:27:107:5426:01
8:23
+0:18
20M
20.00 mi13:22:382:38:477:5711:37
8:34
+0:11
21M
21.00 mi13:31:572:48:068:019:19
9:19
+0:45
35K
21.75 mi13:37:552:54:048:015:58
7:59
-1:20
23M
23.00 mi13:48:383:04:478:0310:43
8:34
+0:35
24M
24.00 mi13:56:473:12:568:038:09
8:09
-0:25
40K
24.85 mi14:04:023:20:118:047:15
8:29
+0:20
25.2M
25.20 mi14:07:073:23:168:043:05
8:57
+0:28
FINISH
26.22 mi14:15:263:31:358:058:19
8:10
-0:47

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

7:42 /mi

Average Pace

8:05 /mi

Slowest Pace

9:19 /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

1:41:35

48% of race

Time at Steady Pace

42:00

20% of race

Time at Slower Pace

1:08:00

32% of race

Average Pace: 8:04 /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 mi11:07:5124:007:4424:00
7:44
#14797
10K
6.21 mi11:31:4947:587:4423:58
7:43
#14804
15K
9.32 mi11:55:441:11:537:4323:55
7:42
#14651
20K
12.43 mi12:20:071:36:167:4524:23
7:51
#14704
HALF
13.11 mi12:25:261:41:357:455:19
7:48
#14746
25K
15.53 mi12:45:002:01:097:4819:34
8:05
#14933
30K
18.64 mi13:11:012:27:107:5426:01
8:23
#15145
20M
20.00 mi13:22:382:38:477:5711:37
8:34
#15249
21M
21.00 mi13:31:572:48:068:019:19
9:19
#15408
35K
21.75 mi13:37:552:54:048:015:58
7:59
#15340
23M
23.00 mi13:48:383:04:478:0310:43
8:34
#15390
24M
24.00 mi13:56:473:12:568:038:09
8:09
#15360
40K
24.85 mi14:04:023:20:118:047:15
8:29
#15354
25.2M
25.20 mi14:07:073:23:168:043:05
8:57
#15342
FINISH
26.22 mi14:15:263:31:358:058:19
8:10
#15378
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 mi147974553455314545(Top 50%)4472(Top 36%)4472(Top 78%)
10K6.21 mi3.10 mi14804-74587-344587-3414903(Top 51%)4638(Top 37%)4638(Top 81%)
15K9.32 mi3.11 mi14651+1534517+704517+7014545(Top 50%)4472(Top 36%)4472(Top 78%)
20K12.43 mi3.11 mi14704-534558-414558-4114922(Top 51%)4755(Top 38%)4755(Top 83%)
HALF13.11 mi0.68 mi14746-424591-334591-3315597(Top 54%)5097(Top 41%)5097(Top 89%)
25K15.53 mi2.42 mi14933-1874703-1124703-11215916(Top 55%)5374(Top 43%)5374(Top 94%)
30K18.64 mi3.11 mi15145-2124888-1854888-18516117(Top 56%)5584(Top 44%)5584(Top 98%)
20M20.00 mi1.36 mi15249-1044971-834971-8316518(Top 57%)5920(Top 47%)5920(Top 104%)
21M21.00 mi1.00 mi15408-1595093-1225093-12217695(Top 61%)6615(Top 53%)6615(Top 116%)
35K21.75 mi0.75 mi15340+685069+245069+2414373(Top 50%)4847(Top 39%)4847(Top 85%)
23M23.00 mi1.25 mi15390-505120-515120-5116097(Top 55%)5897(Top 47%)5897(Top 103%)
24M24.00 mi1.00 mi15360+305127-75127-714768(Top 51%)5204(Top 41%)5204(Top 91%)
40K24.85 mi0.85 mi15354+65141-145141-1415566(Top 54%)5712(Top 45%)5712(Top 100%)
25.2M25.20 mi0.35 mi15342+125142-15142-114442(Top 50%)5134(Top 41%)5134(Top 90%)
FINISH26.22 mi1.02 mi15378-365180-385180-3816207(Top 56%)6059(Top 48%)6059(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21
+97ft-345ft

Overall

14545

Females

4472

F18-39

4472

5K→10K

3.1 - 6.2 mi

Top 51%
×5
+79ft-138ft

Overall

14903

Females

4638

F18-39

4638

10K→15K

6.2 - 9.3 mi

Top 50%
×3
+67ft-78ft

Overall

14545

Females

4472

F18-39

4472

15K→20K

9.3 - 12.4 mi

Top 51%
×5
+106ft-86ft

Overall

14922

Females

4755

F18-39

4755

20K→HALF

12.4 - 13.1 mi

Top 54%
×2
+19ft-37ft

Overall

15597

Females

5097

F18-39

5097

HALF→25K

13.1 - 15.5 mi

Top 55%
×4
+66ft-88ft

Overall

15916

Females

5374

F18-39

5374

25K→30K

15.5 - 18.6 mi

Top 56%
×9
+181ft-148ft

Overall

16117

Females

5584

F18-39

5584

30K→20M

18.6 - 20.0 mi

Top 57%
×5
+64ft-50ft

Overall

16518

Females

5920

F18-39

5920

20M→21M

20.0 - 21.0 mi

Top 61%
×8
+106ft-24ft

Overall

17695

Females

6615

F18-39

6615

21M→35K

21.0 - 21.8 mi

Top 50%
×7
+17ft-86ft

Overall

14373

Females

4847

F18-39

4847

35K→23M

21.8 - 23.0 mi

Top 55%
×5
+23ft-63ft

Overall

16097

Females

5897

F18-39

5897

23M→24M

23.0 - 24.0 mi

Top 51%
×6
+12ft-82ft

Overall

14768

Females

5204

F18-39

5204

24M→40K

24.0 - 24.9 mi

Top 54%
×1
+6ft-20ft

Overall

15566

Females

5712

F18-39

5712

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1
+13ft-16ft

Overall

14442

Females

5134

F18-39

5134

25.2M→FINISH

25.2 - 26.2 mi

Top 56%
×2
+22ft-21ft

Overall

16207

Females

6059

F18-39

6059

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1425*
Passed By
1749
Net Change
-581
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14797
5K10K200200-7#14797#14804
10K15K287*134+153#14804#14651
15K20K154200-53#14651#14704
20KHALF1759-42#14704#14746
HALF25K87200-187#14746#14933
25K30K136200-212#14933#15145
30K20M77181-104#15145#15249
20M21M62200-159#15249#15408
21M35K9729+68#15408#15340
35K23M69119-50#15340#15390
23M24M8757+30#15390#15360
24M40K7468+6#15360#15354
40K25.2M3422+12#15354#15342
25.2MFINISH4480-36#15342#15378
TOTALS1425*1749-581

* 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

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