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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Fiona Sheerin

Bib: 23606 •F •Age: N/A

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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
27:24
3.11 mi
Rank: #21792
Start → 5K
27:24 | 8:50/mi
10K
53:52
6.21 mi
Rank: #21153 (+639)
5K → 10K
26:28 | 8:32/mi
15K
1:19:56
9.32 mi
Rank: #20588 (+565)
10K → 15K
26:04 | 8:24/mi
20K
1:46:26
12.43 mi
Rank: #20265 (+323)
15K → 20K
26:30 | 8:32/mi
HALF
1:52:09
13.11 mi
Rank: #20227 (+38)
20K → HALF
5:43 | 8:24/mi
25K
2:12:55
15.53 mi
Rank: #20037 (+190)
HALF → 25K
20:46 | 8:34/mi
30K
2:40:56
18.64 mi
Rank: #19948 (+89)
25K → 30K
28:01 | 9:02/mi
20M
2:53:32
20.00 mi
Rank: #19983 (-35)
30K → 20M
12:36 | 9:17/mi
21M
3:03:22
21.00 mi
Rank: #19985 (-2)
20M → 21M
9:50 | 9:50/mi
35K
3:09:52
21.75 mi
Rank: #19931 (+54)
21M → 35K
6:30 | 8:42/mi
23M
3:21:10
23.00 mi
Rank: #19856 (+75)
35K → 23M
11:18 | 9:02/mi
24M
3:29:59
24.00 mi
Rank: #19802 (+54)
23M → 24M
8:49 | 8:49/mi
40K
3:37:54
24.85 mi
Rank: #19793 (+9)
24M → 40K
7:55 | 9:16/mi
25.2M
3:41:25
25.20 mi
Rank: #19812 (-19)
40K → 25.2M
3:31 | 10:12/mi
FINISH
3:50:30
26.22 mi
Rank: #19830 (-18)
25.2M → FINISH
9:05 | 8:55/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:52:09
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time1:58:21
Pace9:02 /mi
📊Positive Split: 5.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:32:3427:248:5027:24
8:50
-
10K
6.21 mi11:59:0253:528:4126:28
8:32
-0:18
15K
9.32 mi12:25:061:19:568:3526:04
8:24
-0:08
20K
12.43 mi12:51:361:46:268:3426:30
8:32
+0:08
HALF
13.11 mi12:57:191:52:098:345:43
8:24
-0:08
25K
15.53 mi13:18:052:12:558:3420:46
8:34
+0:10
30K
18.64 mi13:46:062:40:568:3828:01
9:02
+0:28
20M
20.00 mi13:58:422:53:328:4112:36
9:17
+0:15
21M
21.00 mi14:08:323:03:228:449:50
9:50
+0:33
35K
21.75 mi14:15:023:09:528:446:30
8:42
-1:08
23M
23.00 mi14:26:203:21:108:4511:18
9:02
+0:20
24M
24.00 mi14:35:093:29:598:458:49
8:49
-0:13
40K
24.85 mi14:43:043:37:548:477:55
9:16
+0:27
25.2M
25.20 mi14:46:353:41:258:483:31
10:12
+0:56
FINISH
26.22 mi14:55:403:50:308:489:05
8:55
-1:17

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

8:24 /mi

Average Pace

8:48 /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

1:45:31

46% of race

Time at Steady Pace

1:31:07

40% of race

Time at Slower Pace

33:52

15% of race

Average Pace: 8:47 /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 mi11:32:3427:248:5027:24
8:50
#21792
10K
6.21 mi11:59:0253:528:4126:28
8:32
#21153
15K
9.32 mi12:25:061:19:568:3526:04
8:24
#20588
20K
12.43 mi12:51:361:46:268:3426:30
8:32
#20265
HALF
13.11 mi12:57:191:52:098:345:43
8:24
#20227
25K
15.53 mi13:18:052:12:558:3420:46
8:34
#20037
30K
18.64 mi13:46:062:40:568:3828:01
9:02
#19948
20M
20.00 mi13:58:422:53:328:4112:36
9:17
#19983
21M
21.00 mi14:08:323:03:228:449:50
9:50
#19985
35K
21.75 mi14:15:023:09:528:446:30
8:42
#19931
23M
23.00 mi14:26:203:21:108:4511:18
9:02
#19856
24M
24.00 mi14:35:093:29:598:458:49
8:49
#19802
40K
24.85 mi14:43:043:37:548:477:55
9:16
#19793
25.2M
25.20 mi14:46:353:41:258:483:31
10:12
#19812
FINISH
26.22 mi14:55:403:50:308:489:05
8:55
#19830
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 mi217928577857719523(Top 67%)7326(Top 58%)7326(Top 594%)
10K6.21 mi3.10 mi21153+6398225+3528225+35220463(Top 71%)7837(Top 62%)7837(Top 636%)
15K9.32 mi3.11 mi20588+5657920+3057920+30519523(Top 67%)7326(Top 58%)7326(Top 594%)
20K12.43 mi3.11 mi20265+3237767+1537767+15319483(Top 67%)7351(Top 58%)7351(Top 596%)
HALF13.11 mi0.68 mi20227+387752+157752+1519613(Top 68%)7392(Top 59%)7392(Top 600%)
25K15.53 mi2.42 mi20037+1907656+967656+9618978(Top 65%)7118(Top 57%)7118(Top 577%)
30K18.64 mi3.11 mi19948+897622+347622+3419671(Top 68%)7578(Top 60%)7578(Top 615%)
20M20.00 mi1.36 mi19983-357660-387660-3820201(Top 70%)7915(Top 63%)7915(Top 642%)
21M21.00 mi1.00 mi19985-27678-187678-1819890(Top 69%)7797(Top 62%)7797(Top 632%)
35K21.75 mi0.75 mi19931+547656+227656+2218605(Top 64%)7220(Top 57%)7220(Top 586%)
23M23.00 mi1.25 mi19856+757637+197637+1918646(Top 64%)7300(Top 58%)7300(Top 592%)
24M24.00 mi1.00 mi19802+547636+17636+118644(Top 64%)7324(Top 58%)7324(Top 594%)
40K24.85 mi0.85 mi19793+97640-47640-419535(Top 67%)7844(Top 62%)7844(Top 636%)
25.2M25.20 mi0.35 mi19812-197657-177657-1720136(Top 69%)8132(Top 65%)8132(Top 660%)
FINISH26.22 mi1.02 mi19830-187670-137670-1320169(Top 69%)8163(Top 65%)8163(Top 662%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21
+97ft-345ft

Overall

19523

Females

7326

F50-54

7326

5K→10K

3.1 - 6.2 mi

Top 71%
×5
+79ft-138ft

Overall

20463

Females

7837

F50-54

7837

10K→15K

6.2 - 9.3 mi

Top 67%
×3
+67ft-78ft

Overall

19523

Females

7326

F50-54

7326

15K→20K

9.3 - 12.4 mi

Top 67%
×5
+106ft-86ft

Overall

19483

Females

7351

F50-54

7351

20K→HALF

12.4 - 13.1 mi

Top 68%
×2
+19ft-37ft

Overall

19613

Females

7392

F50-54

7392

HALF→25K

13.1 - 15.5 mi

Top 65%
×4
+66ft-88ft

Overall

18978

Females

7118

F50-54

7118

25K→30K

15.5 - 18.6 mi

Top 68%
×9
+181ft-148ft

Overall

19671

Females

7578

F50-54

7578

30K→20M

18.6 - 20.0 mi

Top 70%
×5
+64ft-50ft

Overall

20201

Females

7915

F50-54

7915

20M→21M

20.0 - 21.0 mi

Top 69%
×8
+106ft-24ft

Overall

19890

Females

7797

F50-54

7797

21M→35K

21.0 - 21.8 mi

Top 64%
×7
+17ft-86ft

Overall

18605

Females

7220

F50-54

7220

35K→23M

21.8 - 23.0 mi

Top 64%
×5
+23ft-63ft

Overall

18646

Females

7300

F50-54

7300

23M→24M

23.0 - 24.0 mi

Top 64%
×6
+12ft-82ft

Overall

18644

Females

7324

F50-54

7324

24M→40K

24.0 - 24.9 mi

Top 67%
×1
+6ft-20ft

Overall

19535

Females

7844

F50-54

7844

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1
+13ft-16ft

Overall

20136

Females

8132

F50-54

8132

25.2M→FINISH

25.2 - 26.2 mi

Top 69%
×2
+22ft-21ft

Overall

20169

Females

8163

F50-54

8163

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2747*
Passed By
785
Net Change
+1962
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21792
5K → 10K735*96+639#21792#21153
10K → 15K601*36+565#21153#20588
15K → 20K359*36+323#20588#20265
20K → HALF5214+38#20265#20227
HALF → 25K219*29+190#20227#20037
25K → 30K216*127+89#20037#19948
30K → 20M74109-35#19948#19983
20M → 21M8890-2#19983#19985
21M → 35K7319+54#19985#19931
35K → 23M11843+75#19931#19856
23M → 24M8834+54#19856#19802
24M → 40K6354+9#19802#19793
40K → 25.2M1837-19#19793#19812
25.2M → FINISH4361-18#19812#19830
TOTALS2747*785+1962

* 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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