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BOSTON MARATHON 2026

Jongsang Park

Bib: 23954•M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M65-69)
#0 / 774
Top 32%
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
25:36
3.11 mi
Rank: #18468
Start → 5K
25:36 | 8:15/mi
10K
50:55
6.21 mi
Rank: #18369 (+99)
5K → 10K
25:19 | 8:09/mi
15K
1:16:05
9.32 mi
Rank: #18160 (+209)
10K → 15K
25:10 | 8:07/mi
20K
1:41:36
12.43 mi
Rank: #18017 (+143)
15K → 20K
25:31 | 8:13/mi
HALF
1:47:10
13.11 mi
Rank: #18012 (+5)
20K → HALF
5:34 | 8:10/mi
25K
2:08:14
15.53 mi
Rank: #18276 (-264)
HALF → 25K
21:04 | 8:42/mi
30K
2:36:48
18.64 mi
Rank: #18683 (-407)
25K → 30K
28:34 | 9:12/mi
20M
2:49:58
20.00 mi
Rank: #18966 (-283)
30K → 20M
13:10 | 9:42/mi
21M
3:00:27
21.00 mi
Rank: #19201 (-235)
20M → 21M
10:29 | 10:29/mi
35K
3:07:41
21.75 mi
Rank: #19361 (-160)
21M → 35K
7:14 | 9:41/mi
23M
3:20:49
23.00 mi
Rank: #19779 (-418)
35K → 23M
13:08 | 10:30/mi
24M
3:30:38
24.00 mi
Rank: #19943 (-164)
23M → 24M
9:49 | 9:49/mi
40K
3:39:11
24.85 mi
Rank: #20060 (-117)
24M → 40K
8:33 | 10:00/mi
25.2M
3:43:04
25.20 mi
Rank: #20135 (-75)
40K → 25.2M
3:53 | 11:16/mi
FINISH
3:52:53
26.22 mi
Rank: #20251 (-116)
25.2M → FINISH
9:49 | 9:38/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:47:10
Pace8:11 /mi
2nd Half
Distance13.11 mi
Time2:05:43
Pace9:36 /mi
📊Positive Split: 17.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:28:3325:368:1525:36
8:15
-
10K
6.21 mi11:53:5250:558:1225:19
8:09
-0:06
15K
9.32 mi12:19:021:16:058:1025:10
8:07
-0:02
20K
12.43 mi12:44:331:41:368:1125:31
8:13
+0:06
HALF
13.11 mi12:50:071:47:108:115:34
8:10
-0:03
25K
15.53 mi13:11:112:08:148:1621:04
8:42
+0:32
30K
18.64 mi13:39:452:36:488:2528:34
9:12
+0:30
20M
20.00 mi13:52:552:49:588:3013:10
9:42
+0:30
21M
21.00 mi14:03:243:00:278:3610:29
10:29
+0:47
35K
21.75 mi14:10:383:07:418:387:14
9:41
-0:48
23M
23.00 mi14:23:463:20:498:4413:08
10:30
+0:49
24M
24.00 mi14:33:353:30:388:479:49
9:49
-0:41
40K
24.85 mi14:42:083:39:118:508:33
10:00
+0:11
25.2M
25.20 mi14:46:013:43:048:523:53
11:16
+1:16
FINISH
26.22 mi14:55:503:52:538:549:49
9:38
-1:38

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

8:07 /mi

Average Pace

8:53 /mi

Slowest Pace

11:16 /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

2:08:14

55% of race

Time at Steady Pace

1:17:09

33% of race

Time at Slower Pace

27:30

12% of race

Average Pace: 8:53 /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 mi11:28:3325:368:1525:36
8:15
#18468
10K
6.21 mi11:53:5250:558:1225:19
8:09
#18369
15K
9.32 mi12:19:021:16:058:1025:10
8:07
#18160
20K
12.43 mi12:44:331:41:368:1125:31
8:13
#18017
HALF
13.11 mi12:50:071:47:108:115:34
8:10
#18012
25K
15.53 mi13:11:112:08:148:1621:04
8:42
#18276
30K
18.64 mi13:39:452:36:488:2528:34
9:12
#18683
20M
20.00 mi13:52:552:49:588:3013:10
9:42
#18966
21M
21.00 mi14:03:243:00:278:3610:29
10:29
#19201
35K
21.75 mi14:10:383:07:418:387:14
9:41
#19361
23M
23.00 mi14:23:463:20:498:4413:08
10:30
#19779
24M
24.00 mi14:33:353:30:388:479:49
9:49
#19943
40K
24.85 mi14:42:083:39:118:508:33
10:00
#20060
25.2M
25.20 mi14:46:013:43:048:523:53
11:16
#20135
FINISH
26.22 mi14:55:503:52:538:549:49
9:38
#20251
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi18468116131161317713(Top 61%)11326(Top 69%)11326(Top 1463%)
10K6.21 mi3.10 mi18369+9911586+2711586+2718267(Top 63%)11573(Top 71%)11573(Top 1495%)
15K9.32 mi3.11 mi18160+20911506+8011506+8017713(Top 61%)11326(Top 69%)11326(Top 1463%)
20K12.43 mi3.11 mi18017+14311442+6411442+6417559(Top 61%)11233(Top 69%)11233(Top 1451%)
HALF13.11 mi0.68 mi18012+511440+211440+218197(Top 63%)11543(Top 71%)11543(Top 1491%)
25K15.53 mi2.42 mi18276-26411543-10311543-10319628(Top 68%)12090(Top 74%)12090(Top 1562%)
30K18.64 mi3.11 mi18683-40711682-13911682-13920484(Top 71%)12414(Top 76%)12414(Top 1604%)
20M20.00 mi1.36 mi18966-28311787-10511787-10521690(Top 75%)12911(Top 79%)12911(Top 1668%)
21M21.00 mi1.00 mi19201-23511878-9111878-9121915(Top 76%)12977(Top 79%)12977(Top 1677%)
35K21.75 mi0.75 mi19361-16011934-5611934-5622249(Top 77%)13083(Top 80%)13083(Top 1690%)
23M23.00 mi1.25 mi19779-41812093-15912093-15923353(Top 80%)13563(Top 83%)13563(Top 1752%)
24M24.00 mi1.00 mi19943-16412157-6412157-6422275(Top 77%)13017(Top 80%)13017(Top 1682%)
40K24.85 mi0.85 mi20060-11712198-4112198-4121900(Top 75%)12762(Top 78%)12762(Top 1649%)
25.2M25.20 mi0.35 mi20135-7512231-3312231-3322957(Top 79%)13287(Top 81%)13287(Top 1717%)
FINISH26.22 mi1.02 mi20251-11612274-4312274-4322762(Top 78%)13194(Top 81%)13194(Top 1705%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21
+97ft-345ft

Overall

17713

Males

11326

M65-69

11326

5K→10K

3.1 - 6.2 mi

Top 63%
×5
+79ft-138ft

Overall

18267

Males

11573

M65-69

11573

10K→15K

6.2 - 9.3 mi

Top 61%
×3
+67ft-78ft

Overall

17713

Males

11326

M65-69

11326

15K→20K

9.3 - 12.4 mi

Top 61%
×5
+106ft-86ft

Overall

17559

Males

11233

M65-69

11233

20K→HALF

12.4 - 13.1 mi

Top 63%
×2
+19ft-37ft

Overall

18197

Males

11543

M65-69

11543

HALF→25K

13.1 - 15.5 mi

Top 68%
×4
+66ft-88ft

Overall

19628

Males

12090

M65-69

12090

25K→30K

15.5 - 18.6 mi

Top 71%
×9
+181ft-148ft

Overall

20484

Males

12414

M65-69

12414

30K→20M

18.6 - 20.0 mi

Top 75%
×5
+64ft-50ft

Overall

21690

Males

12911

M65-69

12911

20M→21M

20.0 - 21.0 mi

Top 76%
×8
+106ft-24ft

Overall

21915

Males

12977

M65-69

12977

21M→35K

21.0 - 21.8 mi

Top 77%
×7
+17ft-86ft

Overall

22249

Males

13083

M65-69

13083

35K→23M

21.8 - 23.0 mi

Top 80%
×5
+23ft-63ft

Overall

23353

Males

13563

M65-69

13563

23M→24M

23.0 - 24.0 mi

Top 77%
×6
+12ft-82ft

Overall

22275

Males

13017

M65-69

13017

24M→40K

24.0 - 24.9 mi

Top 75%
×1
+6ft-20ft

Overall

21900

Males

12762

M65-69

12762

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1
+13ft-16ft

Overall

22957

Males

13287

M65-69

13287

25.2M→FINISH

25.2 - 26.2 mi

Top 78%
×2
+22ft-21ft

Overall

22762

Males

13194

M65-69

13194

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1240*
Passed By
2166
Net Change
-1783
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18468
5K → 10K299*200+99#18468#18369
10K → 15K313*104+209#18369#18160
15K → 20K233*90+143#18160#18017
20K → HALF4136+5#18017#18012
HALF → 25K67200-264#18012#18276
25K → 30K85200-407#18276#18683
30K → 20M30200-283#18683#18966
20M → 21M44200-235#18966#19201
21M → 35K22182-160#19201#19361
35K → 23M23200-418#19361#19779
23M → 24M37200-164#19779#19943
24M → 40K21138-117#19943#20060
40K → 25.2M277-75#20060#20135
25.2M → FINISH23139-116#20135#20251
TOTALS1240*2166-1783

* 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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing