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BOSTON MARATHON 2026

Hongbo Dai

Bib: 23621•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 (M60-64)
#0 / 1514
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
25:20
3.11 mi
Rank: #17927
Start → 5K
25:20 | 8:10/mi
10K
51:26
6.21 mi
Rank: #18888 (-961)
5K → 10K
26:06 | 8:25/mi
15K
1:17:52
9.32 mi
Rank: #19319 (-431)
10K → 15K
26:26 | 8:31/mi
20K
1:45:35
12.43 mi
Rank: #19897 (-578)
15K → 20K
27:43 | 8:56/mi
HALF
1:52:24
13.11 mi
Rank: #20349 (-452)
20K → HALF
6:49 | 10:01/mi
25K
2:14:13
15.53 mi
Rank: #20506 (-157)
HALF → 25K
21:49 | 9:00/mi
30K
2:43:15
18.64 mi
Rank: #20643 (-137)
25K → 30K
29:02 | 9:21/mi
20M
2:55:47
20.00 mi
Rank: #20582 (+61)
30K → 20M
12:32 | 9:14/mi
21M
3:05:28
21.00 mi
Rank: #20490 (+92)
20M → 21M
9:41 | 9:41/mi
35K
3:12:20
21.75 mi
Rank: #20503 (-13)
21M → 35K
6:52 | 9:11/mi
23M
3:23:50
23.00 mi
Rank: #20425 (+78)
35K → 23M
11:30 | 9:12/mi
24M
3:32:43
24.00 mi
Rank: #20370 (+55)
23M → 24M
8:53 | 8:53/mi
40K
3:40:15
24.85 mi
Rank: #20255 (+115)
24M → 40K
7:32 | 8:49/mi
25.2M
3:43:34
25.20 mi
Rank: #20214 (+41)
40K → 25.2M
3:19 | 9:38/mi
FINISH
3:52:12
26.22 mi
Rank: #20140 (+74)
25.2M → FINISH
8:38 | 8:29/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:52:24
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time1:59:48
Pace9:09 /mi
📊Positive Split: 6.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:1125:208:1025:20
8:10
-
10K
6.21 mi11:55:1751:268:1726:06
8:25
+0:15
15K
9.32 mi12:21:431:17:528:2226:26
8:31
+0:06
20K
12.43 mi12:49:261:45:358:3027:43
8:56
+0:25
HALF
13.11 mi12:56:151:52:248:356:49
10:01
+1:05
25K
15.53 mi13:18:042:14:138:3921:49
9:00
-1:01
30K
18.64 mi13:47:062:43:158:4629:02
9:21
+0:21
20M
20.00 mi13:59:382:55:478:4812:32
9:14
-0:07
21M
21.00 mi14:09:193:05:288:509:41
9:41
+0:27
35K
21.75 mi14:16:113:12:208:516:52
9:11
-0:30
23M
23.00 mi14:27:413:23:508:5211:30
9:12
+0:01
24M
24.00 mi14:36:343:32:438:528:53
8:53
-0:19
40K
24.85 mi14:44:063:40:158:527:32
8:49
-0:04
25.2M
25.20 mi14:47:253:43:348:533:19
9:38
+0:49
FINISH
26.22 mi14:56:033:52:128:528:38
8:29
-1:09

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

8:10 /mi

Average Pace

8:52 /mi

Slowest Pace

10:01 /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

1:26:30

37% of race

Time at Steady Pace

1:36:51

42% of race

Time at Slower Pace

48:51

21% of race

Average Pace: 8:51 /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 mi11:29:1125:208:1025:20
8:10
#17927
10K
6.21 mi11:55:1751:268:1726:06
8:25
#18888
15K
9.32 mi12:21:431:17:528:2226:26
8:31
#19319
20K
12.43 mi12:49:261:45:358:3027:43
8:56
#19897
HALF
13.11 mi12:56:151:52:248:356:49
10:01
#20349
25K
15.53 mi13:18:042:14:138:3921:49
9:00
#20506
30K
18.64 mi13:47:062:43:158:4629:02
9:21
#20643
20M
20.00 mi13:59:382:55:478:4812:32
9:14
#20582
21M
21.00 mi14:09:193:05:288:509:41
9:41
#20490
35K
21.75 mi14:16:113:12:208:516:52
9:11
#20503
23M
23.00 mi14:27:413:23:508:5211:30
9:12
#20425
24M
24.00 mi14:36:343:32:438:528:53
8:53
#20370
40K
24.85 mi14:44:063:40:158:527:32
8:49
#20255
25.2M
25.20 mi14:47:253:43:348:533:19
9:38
#20214
FINISH
26.22 mi14:56:033:52:128:528:38
8:29
#20140
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17927113871138720198(Top 70%)12416(Top 76%)12416(Top 820%)
10K6.21 mi3.10 mi18888-96111805-41811805-41819772(Top 68%)12220(Top 75%)12220(Top 807%)
15K9.32 mi3.11 mi19319-43112009-20412009-20420198(Top 70%)12416(Top 76%)12416(Top 820%)
20K12.43 mi3.11 mi19897-57812239-23012239-23021556(Top 74%)13031(Top 80%)13031(Top 861%)
HALF13.11 mi0.68 mi20349-45212454-21512454-21525680(Top 88%)14987(Top 92%)14987(Top 990%)
25K15.53 mi2.42 mi20506-15712516-6212516-6221148(Top 73%)12816(Top 78%)12816(Top 846%)
30K18.64 mi3.11 mi20643-13712552-3612552-3621110(Top 73%)12712(Top 78%)12712(Top 840%)
20M20.00 mi1.36 mi20582+6112522+3012522+3019960(Top 69%)12087(Top 74%)12087(Top 798%)
21M21.00 mi1.00 mi20490+9212471+5112471+5119309(Top 67%)11750(Top 72%)11750(Top 776%)
35K21.75 mi0.75 mi20503-1312465+612465+620707(Top 71%)12337(Top 76%)12337(Top 815%)
23M23.00 mi1.25 mi20425+7812416+4912416+4919370(Top 67%)11641(Top 71%)11641(Top 769%)
24M24.00 mi1.00 mi20370+5512375+4112375+4118934(Top 65%)11382(Top 70%)11382(Top 752%)
40K24.85 mi0.85 mi20255+11512296+7912296+7917441(Top 60%)10633(Top 65%)10633(Top 702%)
25.2M25.20 mi0.35 mi20214+4112268+2812268+2817835(Top 61%)10839(Top 66%)10839(Top 716%)
FINISH26.22 mi1.02 mi20140+7412214+5412214+5418005(Top 62%)10898(Top 67%)10898(Top 720%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21
+97ft-345ft

Overall

20198

Males

12416

M60-64

12416

5K→10K

3.1 - 6.2 mi

Top 68%
×5
+79ft-138ft

Overall

19772

Males

12220

M60-64

12220

10K→15K

6.2 - 9.3 mi

Top 70%
×3
+67ft-78ft

Overall

20198

Males

12416

M60-64

12416

15K→20K

9.3 - 12.4 mi

Top 74%
×5
+106ft-86ft

Overall

21556

Males

13031

M60-64

13031

20K→HALF

12.4 - 13.1 mi

Top 88%
×2
+19ft-37ft

Overall

25680

Males

14987

M60-64

14987

HALF→25K

13.1 - 15.5 mi

Top 73%
×4
+66ft-88ft

Overall

21148

Males

12816

M60-64

12816

25K→30K

15.5 - 18.6 mi

Top 73%
×9
+181ft-148ft

Overall

21110

Males

12712

M60-64

12712

30K→20M

18.6 - 20.0 mi

Top 69%
×5
+64ft-50ft

Overall

19960

Males

12087

M60-64

12087

20M→21M

20.0 - 21.0 mi

Top 67%
×8
+106ft-24ft

Overall

19309

Males

11750

M60-64

11750

21M→35K

21.0 - 21.8 mi

Top 71%
×7
+17ft-86ft

Overall

20707

Males

12337

M60-64

12337

35K→23M

21.8 - 23.0 mi

Top 67%
×5
+23ft-63ft

Overall

19370

Males

11641

M60-64

11641

23M→24M

23.0 - 24.0 mi

Top 65%
×6
+12ft-82ft

Overall

18934

Males

11382

M60-64

11382

24M→40K

24.0 - 24.9 mi

Top 60%
×1
+6ft-20ft

Overall

17441

Males

10633

M60-64

10633

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1
+13ft-16ft

Overall

17835

Males

10839

M60-64

10839

25.2M→FINISH

25.2 - 26.2 mi

Top 62%
×2
+22ft-21ft

Overall

18005

Males

10898

M60-64

10898

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1128
Passed By
3341
Net Change
-2213
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17927
5K → 10K481009-961#17927#18888
10K → 15K63494-431#18888#19319
15K → 20K43621-578#19319#19897
20K → HALF2454-452#19897#20349
HALF → 25K90247-157#20349#20506
25K → 30K132269-137#20506#20643
30K → 20M11150+61#20643#20582
20M → 21M12634+92#20582#20490
21M → 35K4255-13#20490#20503
35K → 23M11436+78#20503#20425
23M → 24M8530+55#20425#20370
24M → 40K1227+115#20370#20255
40K → 25.2M509+41#20255#20214
25.2M → FINISH10026+74#20214#20140
TOTALS11283341-2213
📊

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