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BOSTON MARATHON 2026

Junghun Chae

Bib: 12374•M

MA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 43%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Top 45%
Age Group (M50-54)
#0 / 1868
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
21:34
3.11 mi
Rank: #8097
Start → 5K
21:34 | 6:57/mi
10K
42:46
6.21 mi
Rank: #7691 (+406)
5K → 10K
21:12 | 6:50/mi
15K
1:04:31
9.32 mi
Rank: #7993 (-302)
10K → 15K
21:45 | 7:01/mi
20K
1:26:55
12.43 mi
Rank: #8320 (-327)
15K → 20K
22:24 | 7:13/mi
HALF
1:31:40
13.11 mi
Rank: #8324 (-4)
20K → HALF
4:45 | 6:59/mi
25K
1:49:35
15.53 mi
Rank: #8564 (-240)
HALF → 25K
17:55 | 7:24/mi
30K
2:14:22
18.64 mi
Rank: #9316 (-752)
25K → 30K
24:47 | 7:59/mi
20M
2:26:14
20.00 mi
Rank: #9946 (-630)
30K → 20M
11:52 | 8:45/mi
21M
2:36:08
21.00 mi
Rank: #10748 (-802)
20M → 21M
9:54 | 9:54/mi
35K
2:43:12
21.75 mi
Rank: #11283 (-535)
21M → 35K
7:04 | 9:27/mi
23M
2:54:43
23.00 mi
Rank: #11892 (-609)
35K → 23M
11:31 | 9:13/mi
24M
3:03:02
24.00 mi
Rank: #12078 (-186)
23M → 24M
8:19 | 8:19/mi
40K
3:10:11
24.85 mi
Rank: #12177 (-99)
24M → 40K
7:09 | 8:22/mi
25.2M
3:13:27
25.20 mi
Rank: #12252 (-75)
40K → 25.2M
3:16 | 9:29/mi
FINISH
3:21:38
26.22 mi
Rank: #12364 (-112)
25.2M → FINISH
8:11 | 8:02/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:31:40
Pace7:00 /mi
2nd Half
Distance13.11 mi
Time1:49:58
Pace8:24 /mi
📊Positive Split: 20.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4021:346:5721:34
6:57
-
10K
6.21 mi11:10:5242:466:5321:12
6:50
-0:07
15K
9.32 mi11:32:371:04:316:5621:45
7:01
+0:11
20K
12.43 mi11:55:011:26:557:0022:24
7:13
+0:12
HALF
13.11 mi11:59:461:31:407:004:45
6:59
-0:14
25K
15.53 mi12:17:411:49:357:0417:55
7:24
+0:25
30K
18.64 mi12:42:282:14:227:1324:47
7:59
+0:35
20M
20.00 mi12:54:202:26:147:1911:52
8:45
+0:46
21M
21.00 mi13:04:142:36:087:279:54
9:54
+1:09
35K
21.75 mi13:11:182:43:127:317:04
9:27
-0:27
23M
23.00 mi13:22:492:54:437:3611:31
9:13
-0:14
24M
24.00 mi13:31:083:03:027:388:19
8:19
-0:54
40K
24.85 mi13:38:173:10:117:407:09
8:22
+0:03
25.2M
25.20 mi13:41:333:13:277:413:16
9:29
+1:07
FINISH
26.22 mi13:49:443:21:387:428:11
8:02
-1:27

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

6:50 /mi

Average Pace

7:42 /mi

Slowest Pace

9:54 /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

1:49:35

54% of race

Time at Steady Pace

48:26

24% of race

Time at Slower Pace

43:37

22% of race

Average Pace: 7:41 /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 mi10:49:4021:346:5721:34
6:57
#8097
10K
6.21 mi11:10:5242:466:5321:12
6:50
#7691
15K
9.32 mi11:32:371:04:316:5621:45
7:01
#7993
20K
12.43 mi11:55:011:26:557:0022:24
7:13
#8320
HALF
13.11 mi11:59:461:31:407:004:45
6:59
#8324
25K
15.53 mi12:17:411:49:357:0417:55
7:24
#8564
30K
18.64 mi12:42:282:14:227:1324:47
7:59
#9316
20M
20.00 mi12:54:202:26:147:1911:52
8:45
#9946
21M
21.00 mi13:04:142:36:087:279:54
9:54
#10748
35K
21.75 mi13:11:182:43:127:317:04
9:27
#11283
23M
23.00 mi13:22:492:54:437:3611:31
9:13
#11892
24M
24.00 mi13:31:083:03:027:388:19
8:19
#12078
40K
24.85 mi13:38:173:10:117:407:09
8:22
#12177
25.2M
25.20 mi13:41:333:13:277:413:16
9:29
#12252
FINISH
26.22 mi13:49:443:21:387:428:11
8:02
#12364
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 mi8097696569658584(Top 30%)7236(Top 44%)7236(Top 387%)
10K6.21 mi3.10 mi7691+4066681+2846681+2847230(Top 25%)6362(Top 39%)6362(Top 341%)
15K9.32 mi3.11 mi7993-3026885-2046885-2048584(Top 30%)7236(Top 44%)7236(Top 387%)
20K12.43 mi3.11 mi8320-3277073-1887073-1889433(Top 33%)7644(Top 47%)7644(Top 409%)
HALF13.11 mi0.68 mi8324-47075-27075-28463(Top 29%)7162(Top 44%)7162(Top 383%)
25K15.53 mi2.42 mi8564-2407206-1317206-13110479(Top 36%)8073(Top 49%)8073(Top 432%)
30K18.64 mi3.11 mi9316-7527593-3877593-38713313(Top 46%)9242(Top 57%)9242(Top 495%)
20M20.00 mi1.36 mi9946-6307878-2857878-28517556(Top 60%)10983(Top 67%)10983(Top 588%)
21M21.00 mi1.00 mi10748-8028247-3698247-36920068(Top 69%)12088(Top 74%)12088(Top 647%)
35K21.75 mi0.75 mi11283-5358506-2598506-25921562(Top 74%)12749(Top 78%)12749(Top 682%)
23M23.00 mi1.25 mi11892-6098751-2458751-24519413(Top 67%)11654(Top 71%)11654(Top 624%)
24M24.00 mi1.00 mi12078-1868789-388789-3815749(Top 54%)9929(Top 61%)9929(Top 532%)
40K24.85 mi0.85 mi12177-998801-128801-1214802(Top 51%)9413(Top 58%)9413(Top 504%)
25.2M25.20 mi0.35 mi12252-758836-358836-3517107(Top 59%)10454(Top 64%)10454(Top 560%)
FINISH26.22 mi1.02 mi12364-1128862-268862-2615332(Top 53%)9664(Top 59%)9664(Top 517%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21
+97ft-345ft

Overall

8584

Males

7236

M50-54

7236

5K→10K

3.1 - 6.2 mi

Top 25%
×5
+79ft-138ft

Overall

7230

Males

6362

M50-54

6362

10K→15K

6.2 - 9.3 mi

Top 30%
×3
+67ft-78ft

Overall

8584

Males

7236

M50-54

7236

15K→20K

9.3 - 12.4 mi

Top 33%
×5
+106ft-86ft

Overall

9433

Males

7644

M50-54

7644

20K→HALF

12.4 - 13.1 mi

Top 29%
×2
+19ft-37ft

Overall

8463

Males

7162

M50-54

7162

HALF→25K

13.1 - 15.5 mi

Top 36%
×4
+66ft-88ft

Overall

10479

Males

8073

M50-54

8073

25K→30K

15.5 - 18.6 mi

Top 46%
×9
+181ft-148ft

Overall

13313

Males

9242

M50-54

9242

30K→20M

18.6 - 20.0 mi

Top 60%
×5
+64ft-50ft

Overall

17556

Males

10983

M50-54

10983

20M→21M

20.0 - 21.0 mi

Top 69%
×8
+106ft-24ft

Overall

20068

Males

12088

M50-54

12088

21M→35K

21.0 - 21.8 mi

Top 74%
×7
+17ft-86ft

Overall

21562

Males

12749

M50-54

12749

35K→23M

21.8 - 23.0 mi

Top 67%
×5
+23ft-63ft

Overall

19413

Males

11654

M50-54

11654

23M→24M

23.0 - 24.0 mi

Top 54%
×6
+12ft-82ft

Overall

15749

Males

9929

M50-54

9929

24M→40K

24.0 - 24.9 mi

Top 51%
×1
+6ft-20ft

Overall

14802

Males

9413

M50-54

9413

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1
+13ft-16ft

Overall

17107

Males

10454

M50-54

10454

25.2M→FINISH

25.2 - 26.2 mi

Top 53%
×2
+22ft-21ft

Overall

15332

Males

9664

M50-54

9664

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
919
Passed By
5183
Net Change
-4267
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8097
5K → 10K47367+406#8097#7691
10K → 15K59361-302#7691#7993
15K → 20K57384-327#7993#8320
20K → HALF1721-4#8320#8324
HALF → 25K70310-240#8324#8564
25K → 30K45797-752#8564#9316
30K → 20M15644-630#9316#9946
20M → 21M12812-802#9946#10748
21M → 35K8543-535#10748#11283
35K → 23M16625-609#11283#11892
23M → 24M43229-186#11892#12078
24M → 40K55154-99#12078#12177
40K → 25.2M1489-75#12177#12252
25.2M → FINISH35147-112#12252#12364
TOTALS9195183-4267
📊

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