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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Leeyah Choi

Bib: 23632 •F •Age: N/A

CA

Boston Marathon logo
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
28:13
3.11 mi
Rank: #23003
Start → 5K
28:13 | 9:05/mi
10K
56:13
6.21 mi
Rank: #22953 (+50)
5K → 10K
28:00 | 9:01/mi
15K
1:24:25
9.32 mi
Rank: #22953
10K → 15K
28:12 | 9:05/mi
20K
1:52:37
12.43 mi
Rank: #22764 (+189)
15K → 20K
28:12 | 9:05/mi
HALF
1:58:37
13.11 mi
Rank: #22716 (+48)
20K → HALF
6:00 | 8:49/mi
25K
2:21:58
15.53 mi
Rank: #22896 (-180)
HALF → 25K
23:21 | 9:38/mi
30K
2:56:58
18.64 mi
Rank: #23615 (-719)
25K → 30K
35:00 | 11:16/mi
20M
3:11:51
20.00 mi
Rank: #23695 (-80)
30K → 20M
14:53 | 10:58/mi
21M
3:23:58
21.00 mi
Rank: #23801 (-106)
20M → 21M
12:07 | 12:07/mi
35K
3:32:10
21.75 mi
Rank: #23864 (-63)
21M → 35K
8:12 | 10:58/mi
23M
3:45:21
23.00 mi
Rank: #23831 (+33)
35K → 23M
13:11 | 10:33/mi
24M
3:55:40
24.00 mi
Rank: #23818 (+13)
23M → 24M
10:19 | 10:19/mi
40K
4:04:50
24.85 mi
Rank: #23825 (-7)
24M → 40K
9:10 | 10:44/mi
25.2M
4:08:52
25.20 mi
Rank: #23829 (-4)
40K → 25.2M
4:02 | 11:42/mi
FINISH
4:19:43
26.22 mi
Rank: #23884 (-55)
25.2M → FINISH
10:51 | 10:39/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:58:37
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:21:06
Pace10:46 /mi
📊Positive Split: 19.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:32:3728:139:0528:13
9:05
-
10K
6.21 mi12:00:3756:139:0328:00
9:01
-0:04
15K
9.32 mi12:28:491:24:259:0428:12
9:05
+0:04
20K
12.43 mi12:57:011:52:379:0428:12
9:05
0:00
HALF
13.11 mi13:03:011:58:379:036:00
8:49
-0:16
25K
15.53 mi13:26:222:21:589:0923:21
9:38
+0:49
30K
18.64 mi14:01:222:56:589:3035:00
11:16
+1:38
20M
20.00 mi14:16:153:11:519:3614:53
10:58
-0:18
21M
21.00 mi14:28:223:23:589:4312:07
12:07
+1:09
35K
21.75 mi14:36:343:32:109:468:12
10:58
-1:09
23M
23.00 mi14:49:453:45:219:4813:11
10:33
-0:25
24M
24.00 mi15:00:043:55:409:5010:19
10:19
-0:14
40K
24.85 mi15:09:144:04:509:529:10
10:44
+0:25
25.2M
25.20 mi15:13:164:08:529:534:02
11:42
+0:58
FINISH
26.22 mi15:24:074:19:439:5510:51
10:39
-1:03

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

8:49 /mi

Average Pace

9:55 /mi

Slowest Pace

12:07 /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

2:21:58

55% of race

Time at Steady Pace

1:06:36

26% of race

Time at Slower Pace

51:09

20% of race

Average Pace: 9:54 /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 mi11:32:3728:139:0528:13
9:05
#23003
10K
6.21 mi12:00:3756:139:0328:00
9:01
#22953
15K
9.32 mi12:28:491:24:259:0428:12
9:05
#22953
20K
12.43 mi12:57:011:52:379:0428:12
9:05
#22764
HALF
13.11 mi13:03:011:58:379:036:00
8:49
#22716
25K
15.53 mi13:26:222:21:589:0923:21
9:38
#22896
30K
18.64 mi14:01:222:56:589:3035:00
11:16
#23615
20M
20.00 mi14:16:153:11:519:3614:53
10:58
#23695
21M
21.00 mi14:28:223:23:589:4312:07
12:07
#23801
35K
21.75 mi14:36:343:32:109:468:12
10:58
#23864
23M
23.00 mi14:49:453:45:219:4813:11
10:33
#23831
24M
24.00 mi15:00:043:55:409:5010:19
10:19
#23818
40K
24.85 mi15:09:144:04:509:529:10
10:44
#23825
25.2M
25.20 mi15:13:164:08:529:534:02
11:42
#23829
FINISH
26.22 mi15:24:074:19:439:5510:51
10:39
#23884
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 mi230039177917723054(Top 79%)9177(Top 73%)9177(Top 744%)
10K6.21 mi3.10 mi22953+509138+399138+3922903(Top 79%)9110(Top 72%)9110(Top 739%)
15K9.32 mi3.11 mi229539120+189120+1823054(Top 79%)9177(Top 73%)9177(Top 744%)
20K12.43 mi3.11 mi22764+1899030+909030+9022271(Top 77%)8801(Top 70%)8801(Top 714%)
HALF13.11 mi0.68 mi22716+489003+279003+2721894(Top 75%)8595(Top 68%)8595(Top 697%)
25K15.53 mi2.42 mi22896-1809123-1209123-12023376(Top 81%)9403(Top 75%)9403(Top 763%)
30K18.64 mi3.11 mi23615-7199514-3919514-39125804(Top 89%)10790(Top 86%)10790(Top 875%)
20M20.00 mi1.36 mi23695-809566-529566-5224847(Top 86%)10359(Top 82%)10359(Top 840%)
21M21.00 mi1.00 mi23801-1069623-579623-5725247(Top 87%)10627(Top 84%)10627(Top 862%)
35K21.75 mi0.75 mi23864-639666-439666-4325209(Top 87%)10631(Top 85%)10631(Top 862%)
23M23.00 mi1.25 mi23831+339665+19665+123472(Top 81%)9762(Top 78%)9762(Top 792%)
24M24.00 mi1.00 mi23818+139668-39668-323661(Top 82%)9884(Top 79%)9884(Top 802%)
40K24.85 mi0.85 mi23825-79690-229690-2223718(Top 82%)9983(Top 79%)9983(Top 810%)
25.2M25.20 mi0.35 mi23829-49699-99699-923909(Top 82%)10092(Top 80%)10092(Top 818%)
FINISH26.22 mi1.02 mi23884-559748-499748-4925393(Top 87%)10834(Top 86%)10834(Top 879%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21
+97ft-345ft

Overall

23054

Females

9177

F50-54

9177

5K→10K

3.1 - 6.2 mi

Top 79%
×5
+79ft-138ft

Overall

22903

Females

9110

F50-54

9110

10K→15K

6.2 - 9.3 mi

Top 79%
×3
+67ft-78ft

Overall

23054

Females

9177

F50-54

9177

15K→20K

9.3 - 12.4 mi

Top 77%
×5
+106ft-86ft

Overall

22271

Females

8801

F50-54

8801

20K→HALF

12.4 - 13.1 mi

Top 75%
×2
+19ft-37ft

Overall

21894

Females

8595

F50-54

8595

HALF→25K

13.1 - 15.5 mi

Top 81%
×4
+66ft-88ft

Overall

23376

Females

9403

F50-54

9403

25K→30K

15.5 - 18.6 mi

Top 89%
×9
+181ft-148ft

Overall

25804

Females

10790

F50-54

10790

30K→20M

18.6 - 20.0 mi

Top 86%
×5
+64ft-50ft

Overall

24847

Females

10359

F50-54

10359

20M→21M

20.0 - 21.0 mi

Top 87%
×8
+106ft-24ft

Overall

25247

Females

10627

F50-54

10627

21M→35K

21.0 - 21.8 mi

Top 87%
×7
+17ft-86ft

Overall

25209

Females

10631

F50-54

10631

35K→23M

21.8 - 23.0 mi

Top 81%
×5
+23ft-63ft

Overall

23472

Females

9762

F50-54

9762

23M→24M

23.0 - 24.0 mi

Top 82%
×6
+12ft-82ft

Overall

23661

Females

9884

F50-54

9884

24M→40K

24.0 - 24.9 mi

Top 82%
×1
+6ft-20ft

Overall

23718

Females

9983

F50-54

9983

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1
+13ft-16ft

Overall

23909

Females

10092

F50-54

10092

25.2M→FINISH

25.2 - 26.2 mi

Top 87%
×2
+22ft-21ft

Overall

25393

Females

10834

F50-54

10834

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1157*
Passed By
1427
Net Change
-881
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23003
5K → 10K250*200+50#23003#22953
10K → 15K1671670#22953#22953
15K → 20K251*62+189#22953#22764
20K → HALF5911+48#22764#22716
HALF → 25K83200-180#22716#22896
25K → 30K29200-719#22896#23615
30K → 20M48128-80#23615#23695
20M → 21M27133-106#23695#23801
21M → 35K2285-63#23801#23864
35K → 23M8956+33#23864#23831
23M → 24M4431+13#23831#23818
24M → 40K3643-7#23818#23825
40K → 25.2M2024-4#23825#23829
25.2M → FINISH3287-55#23829#23884
TOTALS1157*1427-881

* 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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