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BOSTON MARATHON 2026

Xiaokun Deng

Bib: 13927β€’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 (M55-59)
#0 / 1491
Race Day Weather
51Β°/41Β°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
29:37
3.11 mi
Rank: #24579
Start β†’ 5K
29:37 | 9:32/mi
10K
59:40
6.21 mi
Rank: #24821 (-242)
5K β†’ 10K
30:03 | 9:41/mi
15K
1:31:24
9.32 mi
Rank: #25321 (-500)
10K β†’ 15K
31:44 | 10:13/mi
20K
2:04:40
12.43 mi
Rank: #25674 (-353)
15K β†’ 20K
33:16 | 10:43/mi
HALF
2:11:22
13.11 mi
Rank: #25649 (+25)
20K β†’ HALF
6:42 | 9:50/mi
25K
2:39:24
15.53 mi
Rank: #25997 (-348)
HALF β†’ 25K
28:02 | 11:34/mi
30K
3:19:13
18.64 mi
Rank: #26474 (-477)
25K β†’ 30K
39:49 | 12:49/mi
20M
3:35:15
20.00 mi
Rank: #26449 (+25)
30K β†’ 20M
16:02 | 11:49/mi
21M
3:51:18
21.00 mi
Rank: #26723 (-274)
20M β†’ 21M
16:03 | 16:03/mi
35K
3:59:50
21.75 mi
Rank: #26696 (+27)
21M β†’ 35K
8:32 | 11:25/mi
23M
4:15:49
23.00 mi
Rank: #26752 (-56)
35K β†’ 23M
15:59 | 12:47/mi
24M
4:27:37
24.00 mi
Rank: #26739 (+13)
23M β†’ 24M
11:48 | 11:48/mi
40K
4:37:43
24.85 mi
Rank: #26703 (+36)
24M β†’ 40K
10:06 | 11:49/mi
25.2M
4:42:38
25.20 mi
Rank: #26729 (-26)
40K β†’ 25.2M
4:55 | 14:16/mi
FINISH
4:53:37
26.22 mi
Rank: #26716 (+13)
25.2M β†’ FINISH
10:59 | 10:47/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:11:22
Pace10:02 /mi
2nd Half
Distance13.11 mi
Time2:42:15
Pace12:23 /mi
πŸ“ŠPositive Split: 23.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:4429:379:3229:37
9:32
-
10K
6.21 mi11:28:4759:409:3730:03
9:41
+0:09
15K
9.32 mi12:00:311:31:249:4931:44
10:13
+0:32
20K
12.43 mi12:33:472:04:4010:0233:16
10:43
+0:30
HALF
13.11 mi12:40:292:11:2210:026:42
9:50
-0:53
25K
15.53 mi13:08:312:39:2410:1628:02
11:34
+1:44
30K
18.64 mi13:48:203:19:1310:4239:49
12:49
+1:15
20M
20.00 mi14:04:223:35:1510:4616:02
11:49
-1:00
21M
21.00 mi14:20:253:51:1811:0116:03
16:03
+4:14
35K
21.75 mi14:28:573:59:5011:028:32
11:25
-4:38
23M
23.00 mi14:44:564:15:4911:0815:59
12:47
+1:22
24M
24.00 mi14:56:444:27:3711:1011:48
11:48
-0:59
40K
24.85 mi15:06:504:37:4311:1110:06
11:49
+0:01
25.2M
25.20 mi15:11:454:42:3811:134:55
14:16
+2:27
FINISH
26.22 mi15:22:444:53:3711:1310:59
10:47
-3:29

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

πŸ“ˆPace 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

9:32 /mi

Average Pace

11:12 /mi

Slowest Pace

16:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

πŸ“ŠSegments

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

1:38:06

33% of race

Time at Steady Pace

1:58:45

40% of race

Time at Slower Pace

1:16:46

26% of race

Average Pace: 11:12 /mi

Loading chart...
Faster pace (< avg)
Steady pace (β‰ˆ 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 mi10:58:4429:379:3229:37
9:32
#24579
10K
6.21 mi11:28:4759:409:3730:03
9:41
#24821
15K
9.32 mi12:00:311:31:249:4931:44
10:13
#25321
20K
12.43 mi12:33:472:04:4010:0233:16
10:43
#25674
HALF
13.11 mi12:40:292:11:2210:026:42
9:50
#25649
25K
15.53 mi13:08:312:39:2410:1628:02
11:34
#25997
30K
18.64 mi13:48:203:19:1310:4239:49
12:49
#26474
20M
20.00 mi14:04:223:35:1510:4616:02
11:49
#26449
21M
21.00 mi14:20:253:51:1811:0116:03
16:03
#26723
35K
21.75 mi14:28:573:59:5011:028:32
11:25
#26696
23M
23.00 mi14:44:564:15:4911:0815:59
12:47
#26752
24M
24.00 mi14:56:444:27:3711:1011:48
11:48
#26739
40K
24.85 mi15:06:504:37:4311:1110:06
11:49
#26703
25.2M
25.20 mi15:11:454:42:3811:134:55
14:16
#26729
FINISH
26.22 mi15:22:444:53:3711:1310:59
10:47
#26716
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi24579145171451726161(Top 90%)15241(Top 93%)15241(Top 1022%)
10K6.21 mi3.10 mi24821-24214640-12314640-12325030(Top 86%)14743(Top 90%)14743(Top 989%)
15K9.32 mi3.11 mi25321-50014869-22914869-22926161(Top 90%)15241(Top 93%)15241(Top 1022%)
20K12.43 mi3.11 mi25674-35315034-16515034-16526536(Top 91%)15379(Top 94%)15379(Top 1031%)
HALF13.11 mi0.68 mi25649+2515022+1215022+1225232(Top 87%)14799(Top 91%)14799(Top 993%)
25K15.53 mi2.42 mi25997-34815164-14215164-14227083(Top 93%)15566(Top 95%)15566(Top 1044%)
30K18.64 mi3.11 mi26474-47715335-17115335-17127575(Top 95%)15713(Top 96%)15713(Top 1054%)
20M20.00 mi1.36 mi26449+2515309+2615309+2626152(Top 90%)14992(Top 92%)14992(Top 1005%)
21M21.00 mi1.00 mi26723-27415437-12815437-12828599(Top 99%)16118(Top 99%)16118(Top 1081%)
35K21.75 mi0.75 mi26696+2715415+2215415+2225918(Top 89%)14831(Top 91%)14831(Top 995%)
23M23.00 mi1.25 mi26752-5615425-1015425-1027086(Top 93%)15360(Top 94%)15360(Top 1030%)
24M24.00 mi1.00 mi26739+1315402+2315402+2326348(Top 91%)14963(Top 92%)14963(Top 1004%)
40K24.85 mi0.85 mi26703+3615380+2215380+2225605(Top 88%)14570(Top 89%)14570(Top 977%)
25.2M25.20 mi0.35 mi26729-2615387-715387-727412(Top 94%)15474(Top 95%)15474(Top 1038%)
FINISH26.22 mi1.02 mi26716+1315369+1815369+1825677(Top 88%)14599(Top 89%)14599(Top 979%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
Γ—21
+97ft-345ft

Overall

26161

Males

15241

M55-59

15241

5K→10K

3.1 - 6.2 mi

Top 86%
Γ—5
+79ft-138ft

Overall

25030

Males

14743

M55-59

14743

10K→15K

6.2 - 9.3 mi

Top 90%
Γ—3
+67ft-78ft

Overall

26161

Males

15241

M55-59

15241

15K→20K

9.3 - 12.4 mi

Top 91%
Γ—5
+106ft-86ft

Overall

26536

Males

15379

M55-59

15379

20K→HALF

12.4 - 13.1 mi

Top 87%
Γ—2
+19ft-37ft

Overall

25232

Males

14799

M55-59

14799

HALF→25K

13.1 - 15.5 mi

Top 93%
Γ—4
+66ft-88ft

Overall

27083

Males

15566

M55-59

15566

25K→30K

15.5 - 18.6 mi

Top 95%
Γ—9
+181ft-148ft

Overall

27575

Males

15713

M55-59

15713

30K→20M

18.6 - 20.0 mi

Top 90%
Γ—5
+64ft-50ft

Overall

26152

Males

14992

M55-59

14992

20M→21M

20.0 - 21.0 mi

Top 99%
Γ—8
+106ft-24ft

Overall

28599

Males

16118

M55-59

16118

21M→35K

21.0 - 21.8 mi

Top 89%
Γ—7
+17ft-86ft

Overall

25918

Males

14831

M55-59

14831

35K→23M

21.8 - 23.0 mi

Top 93%
Γ—5
+23ft-63ft

Overall

27086

Males

15360

M55-59

15360

23M→24M

23.0 - 24.0 mi

Top 91%
Γ—6
+12ft-82ft

Overall

26348

Males

14963

M55-59

14963

24M→40K

24.0 - 24.9 mi

Top 88%
Γ—1
+6ft-20ft

Overall

25605

Males

14570

M55-59

14570

40K→25.2M

24.9 - 25.2 mi

Top 94%
Γ—1
+13ft-16ft

Overall

27412

Males

15474

M55-59

15474

25.2M→FINISH

25.2 - 26.2 mi

Top 88%
Γ—2
+22ft-21ft

Overall

25677

Males

14599

M55-59

14599

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Position interactions are being recalculated

Started about 7 hours ago. This usually takes 10-20 minutes. Please check back shortly.

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing