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BOSTON MARATHON 2026

Donggil Choi

Bib: 1434•M

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0:00
0:00
/ mi
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Overall
#0 / 29021
Top 20%
Gender (Male)
#0 / 16340
Top 32%
Age Group (M18-39)
#0 / 5723
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
20:14
3.11 mi
Rank: #4306
Start → 5K
20:14 | 6:31/mi
10K
40:47
6.21 mi
Rank: #4725 (-419)
5K → 10K
20:33 | 6:37/mi
15K
1:01:15
9.32 mi
Rank: #4739 (-14)
10K → 15K
20:28 | 6:36/mi
20K
1:22:08
12.43 mi
Rank: #4862 (-123)
15K → 20K
20:53 | 6:44/mi
HALF
1:26:49
13.11 mi
Rank: #4972 (-110)
20K → HALF
4:41 | 6:53/mi
25K
1:43:45
15.53 mi
Rank: #5298 (-326)
HALF → 25K
16:56 | 6:59/mi
30K
2:05:46
18.64 mi
Rank: #5527 (-229)
25K → 30K
22:01 | 7:06/mi
20M
2:15:37
20.00 mi
Rank: #5664 (-137)
30K → 20M
9:51 | 7:16/mi
21M
2:23:59
21.00 mi
Rank: #6097 (-433)
20M → 21M
8:22 | 8:22/mi
35K
2:29:26
21.75 mi
Rank: #6229 (-132)
21M → 35K
5:27 | 7:18/mi
23M
2:38:20
23.00 mi
Rank: #6206 (+23)
35K → 23M
8:54 | 7:07/mi
24M
2:45:19
24.00 mi
Rank: #6205 (+1)
23M → 24M
6:59 | 6:59/mi
40K
2:51:09
24.85 mi
Rank: #6099 (+106)
24M → 40K
5:50 | 6:50/mi
25.2M
2:53:37
25.20 mi
Rank: #6027 (+72)
40K → 25.2M
2:28 | 7:10/mi
FINISH
3:00:11
26.22 mi
Rank: #5906 (+121)
25.2M → FINISH
6:34 | 6:27/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:26:49
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:33:22
Pace7:08 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:4720:146:3120:14
6:31
-
10K
6.21 mi10:41:2040:476:3420:33
6:37
+0:06
15K
9.32 mi11:01:481:01:156:3520:28
6:36
-0:01
20K
12.43 mi11:22:411:22:086:3720:53
6:44
+0:08
HALF
13.11 mi11:27:221:26:496:384:41
6:53
+0:09
25K
15.53 mi11:44:181:43:456:4116:56
6:59
+0:06
30K
18.64 mi12:06:192:05:466:4522:01
7:06
+0:07
20M
20.00 mi12:16:102:15:376:479:51
7:16
+0:10
21M
21.00 mi12:24:322:23:596:528:22
8:22
+1:06
35K
21.75 mi12:29:592:29:266:535:27
7:18
-1:04
23M
23.00 mi12:38:532:38:206:548:54
7:07
-0:11
24M
24.00 mi12:45:522:45:196:546:59
6:59
-0:08
40K
24.85 mi12:51:422:51:096:545:50
6:50
-0:09
25.2M
25.20 mi12:54:102:53:376:542:28
7:10
+0:20
FINISH
26.22 mi13:00:443:00:116:536:34
6:27
-0:43

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

6:27 /mi

Average Pace

6:53 /mi

Slowest Pace

8:22 /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

1:28:42

49% of race

Time at Steady Pace

1:07:49

38% of race

Time at Slower Pace

23:40

13% of race

Average Pace: 6:52 /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 mi10:20:4720:146:3120:14
6:31
#4306
10K
6.21 mi10:41:2040:476:3420:33
6:37
#4725
15K
9.32 mi11:01:481:01:156:3520:28
6:36
#4739
20K
12.43 mi11:22:411:22:086:3720:53
6:44
#4862
HALF
13.11 mi11:27:221:26:496:384:41
6:53
#4972
25K
15.53 mi11:44:181:43:456:4116:56
6:59
#5298
30K
18.64 mi12:06:192:05:466:4522:01
7:06
#5527
20M
20.00 mi12:16:102:15:376:479:51
7:16
#5664
21M
21.00 mi12:24:322:23:596:528:22
8:22
#6097
35K
21.75 mi12:29:592:29:266:535:27
7:18
#6229
23M
23.00 mi12:38:532:38:206:548:54
7:07
#6206
24M
24.00 mi12:45:522:45:196:546:59
6:59
#6205
40K
24.85 mi12:51:422:51:096:545:50
6:50
#6099
25.2M
25.20 mi12:54:102:53:376:542:28
7:10
#6027
FINISH
26.22 mi13:00:443:00:116:536:34
6:27
#5906
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4306407640764837(Top 17%)4523(Top 28%)4523(Top 79%)
10K6.21 mi3.10 mi4725-4194431-3554431-3555151(Top 18%)4789(Top 29%)4789(Top 84%)
15K9.32 mi3.11 mi4739-144443-124443-124837(Top 17%)4523(Top 28%)4523(Top 79%)
20K12.43 mi3.11 mi4862-1234546-1034546-1035402(Top 19%)4967(Top 30%)4967(Top 87%)
HALF13.11 mi0.68 mi4972-1104641-954641-957627(Top 26%)6587(Top 40%)6587(Top 115%)
25K15.53 mi2.42 mi5298-3264903-2624903-2627262(Top 25%)6289(Top 38%)6289(Top 110%)
30K18.64 mi3.11 mi5527-2295062-1595062-1596559(Top 23%)5683(Top 35%)5683(Top 99%)
20M20.00 mi1.36 mi5664-1375150-885150-887278(Top 25%)6069(Top 37%)6069(Top 106%)
21M21.00 mi1.00 mi6097-4335460-3105460-31012230(Top 42%)8523(Top 52%)8523(Top 149%)
35K21.75 mi0.75 mi6229-1325556-965556-969117(Top 31%)6995(Top 43%)6995(Top 122%)
23M23.00 mi1.25 mi6206+235534+225534+226202(Top 21%)5238(Top 32%)5238(Top 92%)
24M24.00 mi1.00 mi6205+15523+115523+116342(Top 22%)5258(Top 32%)5258(Top 92%)
40K24.85 mi0.85 mi6099+1065435+885435+884370(Top 15%)3811(Top 23%)3811(Top 67%)
25.2M25.20 mi0.35 mi6027+725375+605375+603404(Top 12%)3029(Top 19%)3029(Top 53%)
FINISH26.22 mi1.02 mi5906+1215274+1015274+1013845(Top 13%)3356(Top 21%)3356(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21
+97ft-345ft

Overall

4837

Males

4523

M18-39

4523

5K→10K

3.1 - 6.2 mi

Top 18%
×5
+79ft-138ft

Overall

5151

Males

4789

M18-39

4789

10K→15K

6.2 - 9.3 mi

Top 17%
×3
+67ft-78ft

Overall

4837

Males

4523

M18-39

4523

15K→20K

9.3 - 12.4 mi

Top 19%
×5
+106ft-86ft

Overall

5402

Males

4967

M18-39

4967

20K→HALF

12.4 - 13.1 mi

Top 26%
×2
+19ft-37ft

Overall

7627

Males

6587

M18-39

6587

HALF→25K

13.1 - 15.5 mi

Top 25%
×4
+66ft-88ft

Overall

7262

Males

6289

M18-39

6289

25K→30K

15.5 - 18.6 mi

Top 23%
×9
+181ft-148ft

Overall

6559

Males

5683

M18-39

5683

30K→20M

18.6 - 20.0 mi

Top 25%
×5
+64ft-50ft

Overall

7278

Males

6069

M18-39

6069

20M→21M

20.0 - 21.0 mi

Top 42%
×8
+106ft-24ft

Overall

12230

Males

8523

M18-39

8523

21M→35K

21.0 - 21.8 mi

Top 31%
×7
+17ft-86ft

Overall

9117

Males

6995

M18-39

6995

35K→23M

21.8 - 23.0 mi

Top 21%
×5
+23ft-63ft

Overall

6202

Males

5238

M18-39

5238

23M→24M

23.0 - 24.0 mi

Top 22%
×6
+12ft-82ft

Overall

6342

Males

5258

M18-39

5258

24M→40K

24.0 - 24.9 mi

Top 15%
×1
+6ft-20ft

Overall

4370

Males

3811

M18-39

3811

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1
+13ft-16ft

Overall

3404

Males

3029

M18-39

3029

25.2M→FINISH

25.2 - 26.2 mi

Top 13%
×2
+22ft-21ft

Overall

3845

Males

3356

M18-39

3356

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
851
Passed By
2451
Net Change
-1600
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4306
5K → 10K37456-419#4306#4725
10K → 15K107121-14#4725#4739
15K → 20K57180-123#4739#4862
20K → HALF2112-110#4862#4972
HALF → 25K33359-326#4972#5298
25K → 30K74303-229#5298#5527
30K → 20M36173-137#5527#5664
20M → 21M9442-433#5664#6097
21M → 35K25157-132#6097#6229
35K → 23M7956+23#6229#6206
23M → 24M6362+1#6206#6205
24M → 40K12115+106#6205#6099
40K → 25.2M764+72#6099#6027
25.2M → FINISH13211+121#6027#5906
TOTALS8512451-1600
📊

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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing