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BOSTON MARATHON 2026

Stephanie Choi

Bib: 12623•F

NH

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 31%
Gender (Female)
#0 / 12578
Top 14%
Age Group (F18-39)
#0 / 5716
Top 26%
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
21:52
3.11 mi
Rank: #8879
Start → 5K
21:52 | 7:03/mi
10K
44:11
6.21 mi
Rank: #9420 (-541)
5K → 10K
22:19 | 7:11/mi
15K
1:06:39
9.32 mi
Rank: #9703 (-283)
10K → 15K
22:28 | 7:14/mi
20K
1:29:35
12.43 mi
Rank: #9965 (-262)
15K → 20K
22:56 | 7:23/mi
HALF
1:34:33
13.11 mi
Rank: #10016 (-51)
20K → HALF
4:58 | 7:18/mi
25K
1:52:23
15.53 mi
Rank: #10018 (-2)
HALF → 25K
17:50 | 7:22/mi
30K
2:15:37
18.64 mi
Rank: #9863 (+155)
25K → 30K
23:14 | 7:29/mi
20M
2:25:41
20.00 mi
Rank: #9716 (+147)
30K → 20M
10:04 | 7:25/mi
21M
2:33:25
21.00 mi
Rank: #9588 (+128)
20M → 21M
7:44 | 7:44/mi
35K
2:38:43
21.75 mi
Rank: #9487 (+101)
21M → 35K
5:18 | 7:06/mi
23M
2:47:54
23.00 mi
Rank: #9295 (+192)
35K → 23M
9:11 | 7:21/mi
24M
2:55:02
24.00 mi
Rank: #9180 (+115)
23M → 24M
7:08 | 7:08/mi
40K
3:01:16
24.85 mi
Rank: #9069 (+111)
24M → 40K
6:14 | 7:18/mi
25.2M
3:04:00
25.20 mi
Rank: #9030 (+39)
40K → 25.2M
2:44 | 7:56/mi
FINISH
3:11:03
26.22 mi
Rank: #8913 (+117)
25.2M → FINISH
7:03 | 6:56/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:34:33
Pace7:13 /mi
2nd Half
Distance13.11 mi
Time1:36:30
Pace7:22 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1121:527:0321:52
7:03
-
10K
6.21 mi11:12:3044:117:0722:19
7:11
+0:08
15K
9.32 mi11:34:581:06:397:1022:28
7:14
+0:03
20K
12.43 mi11:57:541:29:357:1322:56
7:23
+0:09
HALF
13.11 mi12:02:521:34:337:134:58
7:18
-0:05
25K
15.53 mi12:20:421:52:237:1517:50
7:22
+0:04
30K
18.64 mi12:43:562:15:377:1723:14
7:29
+0:07
20M
20.00 mi12:54:002:25:417:1810:04
7:25
-0:04
21M
21.00 mi13:01:442:33:257:197:44
7:44
+0:19
35K
21.75 mi13:07:022:38:437:185:18
7:06
-0:38
23M
23.00 mi13:16:132:47:547:199:11
7:21
+0:15
24M
24.00 mi13:23:212:55:027:187:08
7:08
-0:13
40K
24.85 mi13:29:353:01:167:186:14
7:18
+0:10
25.2M
25.20 mi13:32:193:04:007:192:44
7:56
+0:38
FINISH
26.22 mi13:39:223:11:037:187:03
6:56
-1:00

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

6:56 /mi

Average Pace

7:18 /mi

Slowest Pace

7:56 /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

3:00:35

95% of race

Time at Steady Pace

10:28

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:17 /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 mi10:50:1121:527:0321:52
7:03
#8879
10K
6.21 mi11:12:3044:117:0722:19
7:11
#9420
15K
9.32 mi11:34:581:06:397:1022:28
7:14
#9703
20K
12.43 mi11:57:541:29:357:1322:56
7:23
#9965
HALF
13.11 mi12:02:521:34:337:134:58
7:18
#10016
25K
15.53 mi12:20:421:52:237:1517:50
7:22
#10018
30K
18.64 mi12:43:562:15:377:1723:14
7:29
#9863
20M
20.00 mi12:54:002:25:417:1810:04
7:25
#9716
21M
21.00 mi13:01:442:33:257:197:44
7:44
#9588
35K
21.75 mi13:07:022:38:437:185:18
7:06
#9487
23M
23.00 mi13:16:132:47:547:199:11
7:21
#9295
24M
24.00 mi13:23:212:55:027:187:08
7:08
#9180
40K
24.85 mi13:29:353:01:167:186:14
7:18
#9069
25.2M
25.20 mi13:32:193:04:007:192:44
7:56
#9030
FINISH
26.22 mi13:39:223:11:037:187:03
6:56
#8913
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 mi88791369136910393(Top 36%)2157(Top 17%)2157(Top 38%)
10K6.21 mi3.10 mi9420-5411604-2351604-23510128(Top 35%)1968(Top 16%)1968(Top 34%)
15K9.32 mi3.11 mi9703-2831764-1601764-16010393(Top 36%)2157(Top 17%)2157(Top 38%)
20K12.43 mi3.11 mi9965-2621928-1641928-16410957(Top 38%)2551(Top 20%)2551(Top 45%)
HALF13.11 mi0.68 mi10016-511958-301958-3011088(Top 38%)2501(Top 20%)2501(Top 44%)
25K15.53 mi2.42 mi10018-21991-331991-3310185(Top 35%)2220(Top 18%)2220(Top 39%)
30K18.64 mi3.11 mi9863+1551968+231968+239504(Top 33%)2042(Top 16%)2042(Top 36%)
20M20.00 mi1.36 mi9716+1471921+471921+478475(Top 29%)1689(Top 13%)1689(Top 30%)
21M21.00 mi1.00 mi9588+1281886+351886+358077(Top 28%)1633(Top 13%)1633(Top 29%)
35K21.75 mi0.75 mi9487+1011852+341852+347784(Top 27%)1465(Top 12%)1465(Top 26%)
23M23.00 mi1.25 mi9295+1921799+531799+537764(Top 27%)1534(Top 12%)1534(Top 27%)
24M24.00 mi1.00 mi9180+1151776+231776+237422(Top 26%)1474(Top 12%)1474(Top 26%)
40K24.85 mi0.85 mi9069+1111747+291747+297402(Top 26%)1540(Top 12%)1540(Top 27%)
25.2M25.20 mi0.35 mi9030+391746+11746+17968(Top 27%)1851(Top 15%)1851(Top 32%)
FINISH26.22 mi1.02 mi8913+1171728+181728+186965(Top 24%)1471(Top 12%)1471(Top 26%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21
+97ft-345ft

Overall

10393

Females

2157

F18-39

2157

5K→10K

3.1 - 6.2 mi

Top 35%
×5
+79ft-138ft

Overall

10128

Females

1968

F18-39

1968

10K→15K

6.2 - 9.3 mi

Top 36%
×3
+67ft-78ft

Overall

10393

Females

2157

F18-39

2157

15K→20K

9.3 - 12.4 mi

Top 38%
×5
+106ft-86ft

Overall

10957

Females

2551

F18-39

2551

20K→HALF

12.4 - 13.1 mi

Top 38%
×2
+19ft-37ft

Overall

11088

Females

2501

F18-39

2501

HALF→25K

13.1 - 15.5 mi

Top 35%
×4
+66ft-88ft

Overall

10185

Females

2220

F18-39

2220

25K→30K

15.5 - 18.6 mi

Top 33%
×9
+181ft-148ft

Overall

9504

Females

2042

F18-39

2042

30K→20M

18.6 - 20.0 mi

Top 29%
×5
+64ft-50ft

Overall

8475

Females

1689

F18-39

1689

20M→21M

20.0 - 21.0 mi

Top 28%
×8
+106ft-24ft

Overall

8077

Females

1633

F18-39

1633

21M→35K

21.0 - 21.8 mi

Top 27%
×7
+17ft-86ft

Overall

7784

Females

1465

F18-39

1465

35K→23M

21.8 - 23.0 mi

Top 27%
×5
+23ft-63ft

Overall

7764

Females

1534

F18-39

1534

23M→24M

23.0 - 24.0 mi

Top 26%
×6
+12ft-82ft

Overall

7422

Females

1474

F18-39

1474

24M→40K

24.0 - 24.9 mi

Top 26%
×1
+6ft-20ft

Overall

7402

Females

1540

F18-39

1540

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1
+13ft-16ft

Overall

7968

Females

1851

F18-39

1851

25.2M→FINISH

25.2 - 26.2 mi

Top 24%
×2
+22ft-21ft

Overall

6965

Females

1471

F18-39

1471

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1668*
Passed By
987
Net Change
-34
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8879
5K → 10K67200-541#8879#9420
10K → 15K71200-283#9420#9703
15K → 20K89200-262#9703#9965
20K → HALF1564-51#9965#10016
HALF → 25K105107-2#10016#10018
25K → 30K250*95+155#10018#9863
30K → 20M17023+147#9863#9716
20M → 21M14517+128#9716#9588
21M → 35K1109+101#9588#9487
35K → 23M208*16+192#9487#9295
23M → 24M12510+115#9295#9180
24M → 40K12615+111#9180#9069
40K → 25.2M5011+39#9069#9030
25.2M → FINISH13720+117#9030#8913
TOTALS1668*987-34

* 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

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing