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BOSTON MARATHON 2026

Sung Jin Choi

Bib: 6690•M

NY

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 19%
Gender (Male)
#0 / 16340
Top 31%
Masters (Masters Men)
#0 / 10617
Top 16%
Age Group (M50-54)
#0 / 1868
Top 11%
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
20:37
3.11 mi
Rank: #5291
Start → 5K
20:37 | 6:39/mi
10K
41:13
6.21 mi
Rank: #5268 (+23)
5K → 10K
20:36 | 6:38/mi
15K
1:01:54
9.32 mi
Rank: #5289 (-21)
10K → 15K
20:41 | 6:40/mi
20K
1:23:02
12.43 mi
Rank: #5466 (-177)
15K → 20K
21:08 | 6:49/mi
HALF
1:27:33
13.11 mi
Rank: #5461 (+5)
20K → HALF
4:31 | 6:38/mi
25K
1:43:50
15.53 mi
Rank: #5343 (+118)
HALF → 25K
16:17 | 6:43/mi
30K
2:05:09
18.64 mi
Rank: #5202 (+141)
25K → 30K
21:19 | 6:52/mi
20M
2:14:37
20.00 mi
Rank: #5196 (+6)
30K → 20M
9:28 | 6:59/mi
21M
2:21:57
21.00 mi
Rank: #5201 (-5)
20M → 21M
7:20 | 7:20/mi
35K
2:26:53
21.75 mi
Rank: #5130 (+71)
21M → 35K
4:56 | 6:36/mi
23M
2:35:39
23.00 mi
Rank: #5121 (+9)
35K → 23M
8:46 | 7:01/mi
24M
2:42:44
24.00 mi
Rank: #5207 (-86)
23M → 24M
7:05 | 7:05/mi
40K
2:49:13
24.85 mi
Rank: #5385 (-178)
24M → 40K
6:29 | 7:35/mi
25.2M
2:52:08
25.20 mi
Rank: #5495 (-110)
40K → 25.2M
2:55 | 8:28/mi
FINISH
2:59:22
26.22 mi
Rank: #5628 (-133)
25.2M → FINISH
7:14 | 7:06/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:27:33
Pace6:41 /mi
2nd Half
Distance13.11 mi
Time1:31:49
Pace7:01 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0320:376:3920:37
6:39
-
10K
6.21 mi10:46:3941:136:3820:36
6:38
-0:01
15K
9.32 mi11:07:201:01:546:3920:41
6:40
+0:02
20K
12.43 mi11:28:281:23:026:4121:08
6:49
+0:09
HALF
13.11 mi11:32:591:27:336:414:31
6:38
-0:11
25K
15.53 mi11:49:161:43:506:4216:17
6:43
+0:05
30K
18.64 mi12:10:352:05:096:4321:19
6:52
+0:09
20M
20.00 mi12:20:032:14:376:449:28
6:59
+0:07
21M
21.00 mi12:27:232:21:576:467:20
7:20
+0:21
35K
21.75 mi12:32:192:26:536:464:56
6:36
-0:44
23M
23.00 mi12:41:052:35:396:478:46
7:01
+0:25
24M
24.00 mi12:48:102:42:446:477:05
7:05
+0:04
40K
24.85 mi12:54:392:49:136:496:29
7:35
+0:30
25.2M
25.20 mi12:57:342:52:086:502:55
8:28
+0:53
FINISH
26.22 mi13:04:482:59:226:517:14
7:06
-1:22

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

6:36 /mi

Average Pace

6:51 /mi

Slowest Pace

8:28 /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

4:56

3% of race

Time at Steady Pace

2:37:42

88% of race

Time at Slower Pace

16:44

9% of race

Average Pace: 6:50 /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 mi10:26:0320:376:3920:37
6:39
#5291
10K
6.21 mi10:46:3941:136:3820:36
6:38
#5268
15K
9.32 mi11:07:201:01:546:3920:41
6:40
#5289
20K
12.43 mi11:28:281:23:026:4121:08
6:49
#5466
HALF
13.11 mi11:32:591:27:336:414:31
6:38
#5461
25K
15.53 mi11:49:161:43:506:4216:17
6:43
#5343
30K
18.64 mi12:10:352:05:096:4321:19
6:52
#5202
20M
20.00 mi12:20:032:14:376:449:28
6:59
#5196
21M
21.00 mi12:27:232:21:576:467:20
7:20
#5201
35K
21.75 mi12:32:192:26:536:464:56
6:36
#5130
23M
23.00 mi12:41:052:35:396:478:46
7:01
#5121
24M
24.00 mi12:48:102:42:446:477:05
7:05
#5207
40K
24.85 mi12:54:392:49:136:496:29
7:35
#5385
25.2M
25.20 mi12:57:342:52:086:502:55
8:28
#5495
FINISH
26.22 mi13:04:482:59:226:517:14
7:06
#5628
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi5291491349135426(Top 19%)5014(Top 31%)5014(Top 268%)
10K6.21 mi3.10 mi5268+234901+124901+125287(Top 18%)4899(Top 30%)4899(Top 262%)
15K9.32 mi3.11 mi5289-214911-104911-105426(Top 19%)5014(Top 31%)5014(Top 268%)
20K12.43 mi3.11 mi5466-1775047-1365047-1366211(Top 21%)5568(Top 34%)5568(Top 298%)
HALF13.11 mi0.68 mi5461+55039+85039+85488(Top 19%)5019(Top 31%)5019(Top 269%)
25K15.53 mi2.42 mi5343+1184940+994940+995031(Top 17%)4615(Top 28%)4615(Top 247%)
30K18.64 mi3.11 mi5202+1414807+1334807+1334864(Top 17%)4419(Top 27%)4419(Top 237%)
20M20.00 mi1.36 mi5196+64796+114796+115336(Top 18%)4757(Top 29%)4757(Top 255%)
21M21.00 mi1.00 mi5201-54788+84788+85460(Top 19%)4750(Top 29%)4750(Top 254%)
35K21.75 mi0.75 mi5130+714726+624726+624231(Top 15%)3833(Top 23%)3833(Top 205%)
23M23.00 mi1.25 mi5121+94701+254701+255482(Top 19%)4740(Top 29%)4740(Top 254%)
24M24.00 mi1.00 mi5207-864757-564757-567030(Top 24%)5699(Top 35%)5699(Top 305%)
40K24.85 mi0.85 mi5385-1784882-1254882-1259388(Top 32%)6879(Top 42%)6879(Top 368%)
25.2M25.20 mi0.35 mi5495-1104963-814963-8111221(Top 39%)7686(Top 47%)7686(Top 411%)
FINISH26.22 mi1.02 mi5628-1335058-955058-958282(Top 29%)6194(Top 38%)6194(Top 332%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21
+97ft-345ft

Overall

5426

Males

5014

M50-54

5014

5K→10K

3.1 - 6.2 mi

Top 18%
×5
+79ft-138ft

Overall

5287

Males

4899

M50-54

4899

10K→15K

6.2 - 9.3 mi

Top 19%
×3
+67ft-78ft

Overall

5426

Males

5014

M50-54

5014

15K→20K

9.3 - 12.4 mi

Top 21%
×5
+106ft-86ft

Overall

6211

Males

5568

M50-54

5568

20K→HALF

12.4 - 13.1 mi

Top 19%
×2
+19ft-37ft

Overall

5488

Males

5019

M50-54

5019

HALF→25K

13.1 - 15.5 mi

Top 17%
×4
+66ft-88ft

Overall

5031

Males

4615

M50-54

4615

25K→30K

15.5 - 18.6 mi

Top 17%
×9
+181ft-148ft

Overall

4864

Males

4419

M50-54

4419

30K→20M

18.6 - 20.0 mi

Top 18%
×5
+64ft-50ft

Overall

5336

Males

4757

M50-54

4757

20M→21M

20.0 - 21.0 mi

Top 19%
×8
+106ft-24ft

Overall

5460

Males

4750

M50-54

4750

21M→35K

21.0 - 21.8 mi

Top 15%
×7
+17ft-86ft

Overall

4231

Males

3833

M50-54

3833

35K→23M

21.8 - 23.0 mi

Top 19%
×5
+23ft-63ft

Overall

5482

Males

4740

M50-54

4740

23M→24M

23.0 - 24.0 mi

Top 24%
×6
+12ft-82ft

Overall

7030

Males

5699

M50-54

5699

24M→40K

24.0 - 24.9 mi

Top 32%
×1
+6ft-20ft

Overall

9388

Males

6879

M50-54

6879

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1
+13ft-16ft

Overall

11221

Males

7686

M50-54

7686

25.2M→FINISH

25.2 - 26.2 mi

Top 29%
×2
+22ft-21ft

Overall

8282

Males

6194

M50-54

6194

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1117
Passed By
1454
Net Change
-337
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5291
5K → 10K193170+23#5291#5268
10K → 15K116137-21#5268#5289
15K → 20K55232-177#5289#5466
20K → HALF2419+5#5466#5461
HALF → 25K14426+118#5461#5343
25K → 30K21372+141#5343#5202
30K → 20M6256+6#5202#5196
20M → 21M6065-5#5196#5201
21M → 35K798+71#5201#5130
35K → 23M7869+9#5130#5121
23M → 24M37123-86#5121#5207
24M → 40K21199-178#5207#5385
40K → 25.2M9119-110#5385#5495
25.2M → FINISH26159-133#5495#5628
TOTALS11171454-337
📊

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