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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Ceilidgh O’brien

Bib: 29424 •F •Age: N/A

MA

Boston Marathon logo
0:00
0:00
/ mi
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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
38:50
3.11 mi
Rank: #28925
Start → 5K
38:50 | 12:30/mi
10K
1:15:55
6.21 mi
Rank: #28821 (+104)
5K → 10K
37:05 | 11:57/mi
15K
1:52:40
9.32 mi
Rank: #28683 (+138)
10K → 15K
36:45 | 11:50/mi
20K
2:32:28
12.43 mi
Rank: #28658 (+25)
15K → 20K
39:48 | 12:49/mi
HALF
2:40:36
13.11 mi
Rank: #28646 (+12)
20K → HALF
8:08 | 11:56/mi
25K
3:09:34
15.53 mi
Rank: #28464 (+182)
HALF → 25K
28:58 | 11:57/mi
30K
3:48:28
18.64 mi
Rank: #28308 (+156)
25K → 30K
38:54 | 12:32/mi
20M
4:06:38
20.00 mi
Rank: #28278 (+30)
30K → 20M
18:10 | 13:23/mi
21M
4:20:48
21.00 mi
Rank: #28236 (+42)
20M → 21M
14:10 | 14:10/mi
35K
4:29:58
21.75 mi
Rank: #28208 (+28)
21M → 35K
9:10 | 12:16/mi
23M
4:45:19
23.00 mi
Rank: #28150 (+58)
35K → 23M
15:21 | 12:16/mi
24M
4:57:07
24.00 mi
Rank: #28095 (+55)
23M → 24M
11:48 | 11:48/mi
40K
5:07:53
24.85 mi
Rank: #28064 (+31)
24M → 40K
10:46 | 12:36/mi
25.2M
5:12:21
25.20 mi
Rank: #28046 (+18)
40K → 25.2M
4:28 | 12:58/mi
FINISH
5:24:36
26.22 mi
Rank: #28036 (+10)
25.2M → FINISH
12:15 | 12:02/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
Time2:40:36
Pace12:16 /mi
2nd Half
Distance13.11 mi
Time2:44:00
Pace12:31 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:03:4038:5012:3038:50
12:30
-
10K
6.21 mi12:40:451:15:5512:1437:05
11:57
-0:33
15K
9.32 mi13:17:301:52:4012:0636:45
11:50
-0:07
20K
12.43 mi13:57:182:32:2812:1739:48
12:49
+0:59
HALF
13.11 mi14:05:262:40:3612:168:08
11:56
-0:53
25K
15.53 mi14:34:243:09:3412:1328:58
11:57
+0:01
30K
18.64 mi15:13:183:48:2812:1638:54
12:32
+0:35
20M
20.00 mi15:31:284:06:3812:2018:10
13:23
+0:51
21M
21.00 mi15:45:384:20:4812:2614:10
14:10
+0:47
35K
21.75 mi15:54:484:29:5812:259:10
12:16
-1:54
23M
23.00 mi16:10:094:45:1912:2515:21
12:16
0:00
24M
24.00 mi16:21:574:57:0712:2311:48
11:48
-0:28
40K
24.85 mi16:32:435:07:5312:2410:46
12:36
+0:48
25.2M
25.20 mi16:37:115:12:2112:244:28
12:58
+0:22
FINISH
26.22 mi16:49:265:24:3612:2412:15
12:02
-0:56

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

11:48 /mi

Average Pace

12:23 /mi

Slowest Pace

14:10 /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

56:41

17% of race

Time at Steady Pace

3:00:33

56% of race

Time at Slower Pace

1:27:22

27% of race

Average Pace: 12:23 /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 mi12:03:4038:5012:3038:50
12:30
#28925
10K
6.21 mi12:40:451:15:5512:1437:05
11:57
#28821
15K
9.32 mi13:17:301:52:4012:0636:45
11:50
#28683
20K
12.43 mi13:57:182:32:2812:1739:48
12:49
#28658
HALF
13.11 mi14:05:262:40:3612:168:08
11:56
#28646
25K
15.53 mi14:34:243:09:3412:1328:58
11:57
#28464
30K
18.64 mi15:13:183:48:2812:1638:54
12:32
#28308
20M
20.00 mi15:31:284:06:3812:2018:10
13:23
#28278
21M
21.00 mi15:45:384:20:4812:2614:10
14:10
#28236
35K
21.75 mi15:54:484:29:5812:259:10
12:16
#28208
23M
23.00 mi16:10:094:45:1912:2515:21
12:16
#28150
24M
24.00 mi16:21:574:57:0712:2311:48
11:48
#28095
40K
24.85 mi16:32:435:07:5312:2410:46
12:36
#28064
25.2M
25.20 mi16:37:115:12:2112:244:28
12:58
#28046
FINISH
26.22 mi16:49:265:24:3612:2412:15
12:02
#28036
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 mi28925125151251528236(Top 97%)12068(Top 96%)12068(Top 211%)
10K6.21 mi3.10 mi28821+10412444+7112444+7128548(Top 98%)12254(Top 97%)12254(Top 214%)
15K9.32 mi3.11 mi28683+13812345+9912345+9928236(Top 97%)12068(Top 96%)12068(Top 211%)
20K12.43 mi3.11 mi28658+2512332+1312332+1328527(Top 98%)12267(Top 98%)12267(Top 215%)
HALF13.11 mi0.68 mi28646+1212324+812324+828235(Top 97%)12102(Top 96%)12102(Top 212%)
25K15.53 mi2.42 mi28464+18212206+11812206+11827477(Top 95%)11650(Top 93%)11650(Top 204%)
30K18.64 mi3.11 mi28308+15612112+9412112+9427314(Top 94%)11632(Top 92%)11632(Top 203%)
20M20.00 mi1.36 mi28278+3012094+1812094+1827713(Top 95%)11881(Top 94%)11881(Top 208%)
21M21.00 mi1.00 mi28236+4212074+2012074+2027458(Top 95%)11778(Top 94%)11778(Top 206%)
35K21.75 mi0.75 mi28208+2812059+1512059+1527027(Top 93%)11574(Top 92%)11574(Top 202%)
23M23.00 mi1.25 mi28150+5812034+2512034+2526501(Top 91%)11328(Top 90%)11328(Top 198%)
24M24.00 mi1.00 mi28095+5511997+3711997+3726361(Top 91%)11302(Top 90%)11302(Top 198%)
40K24.85 mi0.85 mi28064+3111981+1611981+1626638(Top 92%)11470(Top 91%)11470(Top 201%)
25.2M25.20 mi0.35 mi28046+1811971+1011971+1026033(Top 90%)11142(Top 89%)11142(Top 195%)
FINISH26.22 mi1.02 mi28036+1011975-411975-427496(Top 95%)11866(Top 94%)11866(Top 208%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 97%
×21
+97ft-345ft

Overall

28236

Females

12068

F18-39

12068

5K→10K

3.1 - 6.2 mi

Top 98%
×5
+79ft-138ft

Overall

28548

Females

12254

F18-39

12254

10K→15K

6.2 - 9.3 mi

Top 97%
×3
+67ft-78ft

Overall

28236

Females

12068

F18-39

12068

15K→20K

9.3 - 12.4 mi

Top 98%
×5
+106ft-86ft

Overall

28527

Females

12267

F18-39

12267

20K→HALF

12.4 - 13.1 mi

Top 97%
×2
+19ft-37ft

Overall

28235

Females

12102

F18-39

12102

HALF→25K

13.1 - 15.5 mi

Top 95%
×4
+66ft-88ft

Overall

27477

Females

11650

F18-39

11650

25K→30K

15.5 - 18.6 mi

Top 94%
×9
+181ft-148ft

Overall

27314

Females

11632

F18-39

11632

30K→20M

18.6 - 20.0 mi

Top 95%
×5
+64ft-50ft

Overall

27713

Females

11881

F18-39

11881

20M→21M

20.0 - 21.0 mi

Top 95%
×8
+106ft-24ft

Overall

27458

Females

11778

F18-39

11778

21M→35K

21.0 - 21.8 mi

Top 93%
×7
+17ft-86ft

Overall

27027

Females

11574

F18-39

11574

35K→23M

21.8 - 23.0 mi

Top 91%
×5
+23ft-63ft

Overall

26501

Females

11328

F18-39

11328

23M→24M

23.0 - 24.0 mi

Top 91%
×6
+12ft-82ft

Overall

26361

Females

11302

F18-39

11302

24M→40K

24.0 - 24.9 mi

Top 92%
×1
+6ft-20ft

Overall

26638

Females

11470

F18-39

11470

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1
+13ft-16ft

Overall

26033

Females

11142

F18-39

11142

25.2M→FINISH

25.2 - 26.2 mi

Top 95%
×2
+22ft-21ft

Overall

27496

Females

11866

F18-39

11866

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
981
Passed By
92
Net Change
+889
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#28925
5K → 10K1106+104#28925#28821
10K → 15K1413+138#28821#28683
15K → 20K5631+25#28683#28658
20K → HALF142+12#28658#28646
HALF → 25K1831+182#28646#28464
25K → 30K1615+156#28464#28308
30K → 20M4313+30#28308#28278
20M → 21M475+42#28278#28236
21M → 35K291+28#28236#28208
35K → 23M602+58#28208#28150
23M → 24M572+55#28150#28095
24M → 40K332+31#28095#28064
40K → 25.2M191+18#28064#28046
25.2M → FINISH2818+10#28046#28036
TOTALS98192+889
📊

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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