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BOSTON MARATHON 2026

Sinead O’ Callaghan

Bib: 22538•F

OH

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 49%
Gender (Female)
#0 / 12578
Top 35%
Masters (Masters Women)
#0 / 6862
Top 20%
Age Group (F45-49)
#0 / 1786
Top 22%
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
22:56
3.11 mi
Rank: #11796
Start → 5K
22:56 | 7:23/mi
10K
45:54
6.21 mi
Rank: #11866 (-70)
5K → 10K
22:58 | 7:24/mi
15K
1:09:43
9.32 mi
Rank: #12656 (-790)
10K → 15K
23:49 | 7:40/mi
20K
1:34:02
12.43 mi
Rank: #13161 (-505)
15K → 20K
24:19 | 7:50/mi
HALF
1:39:11
13.11 mi
Rank: #13173 (-12)
20K → HALF
5:09 | 7:34/mi
25K
1:58:18
15.53 mi
Rank: #13365 (-192)
HALF → 25K
19:07 | 7:53/mi
30K
2:23:45
18.64 mi
Rank: #13620 (-255)
25K → 30K
25:27 | 8:12/mi
20M
2:35:17
20.00 mi
Rank: #13791 (-171)
30K → 20M
11:32 | 8:30/mi
21M
2:44:07
21.00 mi
Rank: #13864 (-73)
20M → 21M
8:50 | 8:50/mi
35K
2:50:04
21.75 mi
Rank: #13865 (-1)
21M → 35K
5:57 | 7:58/mi
23M
3:00:30
23.00 mi
Rank: #13905 (-40)
35K → 23M
10:26 | 8:21/mi
24M
3:08:39
24.00 mi
Rank: #13936 (-31)
23M → 24M
8:09 | 8:09/mi
40K
3:15:53
24.85 mi
Rank: #13992 (-56)
24M → 40K
7:14 | 8:28/mi
25.2M
3:19:04
25.20 mi
Rank: #14043 (-51)
40K → 25.2M
3:11 | 9:14/mi
FINISH
3:27:23
26.22 mi
Rank: #14133 (-90)
25.2M → FINISH
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
Time1:39:11
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:48:12
Pace8:16 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:1422:567:2322:56
7:23
-
10K
6.21 mi11:47:1245:547:2422:58
7:24
+0:01
15K
9.32 mi12:11:011:09:437:2923:49
7:40
+0:16
20K
12.43 mi12:35:201:34:027:3424:19
7:50
+0:10
HALF
13.11 mi12:40:291:39:117:345:09
7:34
-0:16
25K
15.53 mi12:59:361:58:187:3719:07
7:53
+0:19
30K
18.64 mi13:25:032:23:457:4325:27
8:12
+0:19
20M
20.00 mi13:36:352:35:177:4611:32
8:30
+0:18
21M
21.00 mi13:45:252:44:077:498:50
8:50
+0:20
35K
21.75 mi13:51:222:50:047:505:57
7:58
-0:52
23M
23.00 mi14:01:483:00:307:5110:26
8:21
+0:23
24M
24.00 mi14:09:573:08:397:528:09
8:09
-0:12
40K
24.85 mi14:17:113:15:537:537:14
8:28
+0:19
25.2M
25.20 mi14:20:223:19:047:543:11
9:14
+0:46
FINISH
26.22 mi14:28:413:27:237:558:19
8:10
-1:04

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

7:23 /mi

Average Pace

7:55 /mi

Slowest Pace

9:14 /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

1:58:18

57% of race

Time at Steady Pace

58:18

28% of race

Time at Slower Pace

30:47

15% of race

Average Pace: 7:55 /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 mi11:24:1422:567:2322:56
7:23
#11796
10K
6.21 mi11:47:1245:547:2422:58
7:24
#11866
15K
9.32 mi12:11:011:09:437:2923:49
7:40
#12656
20K
12.43 mi12:35:201:34:027:3424:19
7:50
#13161
HALF
13.11 mi12:40:291:39:117:345:09
7:34
#13173
25K
15.53 mi12:59:361:58:187:3719:07
7:53
#13365
30K
18.64 mi13:25:032:23:457:4325:27
8:12
#13620
20M
20.00 mi13:36:352:35:177:4611:32
8:30
#13791
21M
21.00 mi13:45:252:44:077:498:50
8:50
#13864
35K
21.75 mi13:51:222:50:047:505:57
7:58
#13865
23M
23.00 mi14:01:483:00:307:5110:26
8:21
#13905
24M
24.00 mi14:09:573:08:397:528:09
8:09
#13936
40K
24.85 mi14:17:113:15:537:537:14
8:28
#13992
25.2M
25.20 mi14:20:223:19:047:543:11
9:14
#14043
FINISH
26.22 mi14:28:413:27:237:558:19
8:10
#14133
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 mi117962806280614262(Top 49%)4291(Top 34%)4291(Top 240%)
10K6.21 mi3.10 mi11866-702860-542860-5412024(Top 41%)2983(Top 24%)2983(Top 167%)
15K9.32 mi3.11 mi12656-7903334-4743334-47414262(Top 49%)4291(Top 34%)4291(Top 240%)
20K12.43 mi3.11 mi13161-5053676-3423676-34214750(Top 51%)4646(Top 37%)4646(Top 260%)
HALF13.11 mi0.68 mi13173-123679-33679-313534(Top 47%)3897(Top 31%)3897(Top 218%)
25K15.53 mi2.42 mi13365-1923804-1253804-12514485(Top 50%)4565(Top 36%)4565(Top 256%)
30K18.64 mi3.11 mi13620-2553982-1783982-17814868(Top 51%)4894(Top 39%)4894(Top 274%)
20M20.00 mi1.36 mi13791-1714105-1234105-12316147(Top 56%)5718(Top 45%)5718(Top 320%)
21M21.00 mi1.00 mi13864-734179-744179-7415192(Top 52%)5237(Top 42%)5237(Top 293%)
35K21.75 mi0.75 mi13865-14202-234202-2314187(Top 49%)4736(Top 38%)4736(Top 265%)
23M23.00 mi1.25 mi13905-404251-494251-4914711(Top 51%)5117(Top 41%)5117(Top 287%)
24M24.00 mi1.00 mi13936-314293-424293-4214761(Top 51%)5197(Top 41%)5197(Top 291%)
40K24.85 mi0.85 mi13992-564349-564349-5615434(Top 53%)5648(Top 45%)5648(Top 316%)
25.2M25.20 mi0.35 mi14043-514389-404389-4015976(Top 55%)5930(Top 47%)5930(Top 332%)
FINISH26.22 mi1.02 mi14133-904463-744463-7416199(Top 56%)6051(Top 48%)6051(Top 339%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21
+97ft-345ft

Overall

14262

Females

4291

F45-49

4291

5K→10K

3.1 - 6.2 mi

Top 41%
×5
+79ft-138ft

Overall

12024

Females

2983

F45-49

2983

10K→15K

6.2 - 9.3 mi

Top 49%
×3
+67ft-78ft

Overall

14262

Females

4291

F45-49

4291

15K→20K

9.3 - 12.4 mi

Top 51%
×5
+106ft-86ft

Overall

14750

Females

4646

F45-49

4646

20K→HALF

12.4 - 13.1 mi

Top 47%
×2
+19ft-37ft

Overall

13534

Females

3897

F45-49

3897

HALF→25K

13.1 - 15.5 mi

Top 50%
×4
+66ft-88ft

Overall

14485

Females

4565

F45-49

4565

25K→30K

15.5 - 18.6 mi

Top 51%
×9
+181ft-148ft

Overall

14868

Females

4894

F45-49

4894

30K→20M

18.6 - 20.0 mi

Top 56%
×5
+64ft-50ft

Overall

16147

Females

5718

F45-49

5718

20M→21M

20.0 - 21.0 mi

Top 52%
×8
+106ft-24ft

Overall

15192

Females

5237

F45-49

5237

21M→35K

21.0 - 21.8 mi

Top 49%
×7
+17ft-86ft

Overall

14187

Females

4736

F45-49

4736

35K→23M

21.8 - 23.0 mi

Top 51%
×5
+23ft-63ft

Overall

14711

Females

5117

F45-49

5117

23M→24M

23.0 - 24.0 mi

Top 51%
×6
+12ft-82ft

Overall

14761

Females

5197

F45-49

5197

24M→40K

24.0 - 24.9 mi

Top 53%
×1
+6ft-20ft

Overall

15434

Females

5648

F45-49

5648

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1
+13ft-16ft

Overall

15976

Females

5930

F45-49

5930

25.2M→FINISH

25.2 - 26.2 mi

Top 56%
×2
+22ft-21ft

Overall

16199

Females

6051

F45-49

6051

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
975
Passed By
3312
Net Change
-2337
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11796
5K → 10K238308-70#11796#11866
10K → 15K42832-790#11866#12656
15K → 20K43548-505#12656#13161
20K → HALF3244-12#13161#13173
HALF → 25K73265-192#13173#13365
25K → 30K121376-255#13365#13620
30K → 20M60231-171#13620#13791
20M → 21M65138-73#13791#13864
21M → 35K6162-1#13864#13865
35K → 23M76116-40#13865#13905
23M → 24M5283-31#13905#13936
24M → 40K59115-56#13936#13992
40K → 25.2M960-51#13992#14043
25.2M → FINISH44134-90#14043#14133
TOTALS9753312-2337
📊

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