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BOSTON MARATHON 2026

Tiecheng Dai

Bib: 19569•M

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Top 44%
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Top 46%
Age Group (M60-64)
#0 / 1514
Top 10%
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
23:51
3.11 mi
Rank: #14322
Start → 5K
23:51 | 7:41/mi
10K
47:24
6.21 mi
Rank: #13991 (+331)
5K → 10K
23:33 | 7:35/mi
15K
1:10:38
9.32 mi
Rank: #13475 (+516)
10K → 15K
23:14 | 7:29/mi
20K
1:34:26
12.43 mi
Rank: #13415 (+60)
15K → 20K
23:48 | 7:40/mi
HALF
1:39:31
13.11 mi
Rank: #13379 (+36)
20K → HALF
5:05 | 7:28/mi
25K
1:58:14
15.53 mi
Rank: #13323 (+56)
HALF → 25K
18:43 | 7:44/mi
30K
2:22:55
18.64 mi
Rank: #13254 (+69)
25K → 30K
24:41 | 7:57/mi
20M
2:33:47
20.00 mi
Rank: #13191 (+63)
30K → 20M
10:52 | 8:01/mi
21M
2:42:15
21.00 mi
Rank: #13162 (+29)
20M → 21M
8:28 | 8:28/mi
35K
2:47:55
21.75 mi
Rank: #13084 (+78)
21M → 35K
5:40 | 7:35/mi
23M
2:57:39
23.00 mi
Rank: #12939 (+145)
35K → 23M
9:44 | 7:47/mi
24M
3:05:13
24.00 mi
Rank: #12801 (+138)
23M → 24M
7:34 | 7:34/mi
40K
3:11:49
24.85 mi
Rank: #12687 (+114)
24M → 40K
6:36 | 7:44/mi
25.2M
3:14:54
25.20 mi
Rank: #12702 (-15)
40K → 25.2M
3:05 | 8:57/mi
FINISH
3:22:48
26.22 mi
Rank: #12698 (+4)
25.2M → FINISH
7:54 | 7:46/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:39:31
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:43:17
Pace7:53 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:08:1523:517:4123:51
7:41
-
10K
6.21 mi11:31:4847:247:3823:33
7:35
-0:06
15K
9.32 mi11:55:021:10:387:3523:14
7:29
-0:06
20K
12.43 mi12:18:501:34:267:3623:48
7:40
+0:11
HALF
13.11 mi12:23:551:39:317:365:05
7:28
-0:12
25K
15.53 mi12:42:381:58:147:3718:43
7:44
+0:16
30K
18.64 mi13:07:192:22:557:4124:41
7:57
+0:13
20M
20.00 mi13:18:112:33:477:4210:52
8:01
+0:04
21M
21.00 mi13:26:392:42:157:448:28
8:28
+0:27
35K
21.75 mi13:32:192:47:557:445:40
7:35
-0:53
23M
23.00 mi13:42:032:57:397:449:44
7:47
+0:12
24M
24.00 mi13:49:373:05:137:447:34
7:34
-0:13
40K
24.85 mi13:56:133:11:497:446:36
7:44
+0:10
25.2M
25.20 mi13:59:183:14:547:453:05
8:57
+1:13
FINISH
26.22 mi14:07:123:22:487:457:54
7:46
-1:11

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

7:28 /mi

Average Pace

7:44 /mi

Slowest Pace

8:57 /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

3:11:15

94% of race

Time at Steady Pace

8:28

4% of race

Time at Slower Pace

3:05

2% of race

Average Pace: 7:44 /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 mi11:08:1523:517:4123:51
7:41
#14322
10K
6.21 mi11:31:4847:247:3823:33
7:35
#13991
15K
9.32 mi11:55:021:10:387:3523:14
7:29
#13475
20K
12.43 mi12:18:501:34:267:3623:48
7:40
#13415
HALF
13.11 mi12:23:551:39:317:365:05
7:28
#13379
25K
15.53 mi12:42:381:58:147:3718:43
7:44
#13323
30K
18.64 mi13:07:192:22:557:4124:41
7:57
#13254
20M
20.00 mi13:18:112:33:477:4210:52
8:01
#13191
21M
21.00 mi13:26:392:42:157:448:28
8:28
#13162
35K
21.75 mi13:32:192:47:557:445:40
7:35
#13084
23M
23.00 mi13:42:032:57:397:449:44
7:47
#12939
24M
24.00 mi13:49:373:05:137:447:34
7:34
#12801
40K
24.85 mi13:56:133:11:497:446:36
7:44
#12687
25.2M
25.20 mi13:59:183:14:547:453:05
8:57
#12702
FINISH
26.22 mi14:07:123:22:487:457:54
7:46
#12698
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 mi143229996999612620(Top 43%)9216(Top 56%)9216(Top 609%)
10K6.21 mi3.10 mi13991+3319852+1449852+14413662(Top 47%)9686(Top 59%)9686(Top 640%)
15K9.32 mi3.11 mi13475+5169601+2519601+25112620(Top 43%)9216(Top 56%)9216(Top 609%)
20K12.43 mi3.11 mi13415+609557+449557+4413348(Top 46%)9445(Top 58%)9445(Top 624%)
HALF13.11 mi0.68 mi13379+369536+219536+2112599(Top 43%)9193(Top 56%)9193(Top 607%)
25K15.53 mi2.42 mi13323+569490+469490+4613169(Top 45%)9292(Top 57%)9292(Top 614%)
30K18.64 mi3.11 mi13254+699413+779413+7713065(Top 45%)9143(Top 56%)9143(Top 604%)
20M20.00 mi1.36 mi13191+639357+569357+5612818(Top 44%)8931(Top 55%)8931(Top 590%)
21M21.00 mi1.00 mi13162+299326+319326+3112880(Top 44%)8844(Top 54%)8844(Top 584%)
35K21.75 mi0.75 mi13084+789281+459281+4511367(Top 39%)8145(Top 50%)8145(Top 538%)
23M23.00 mi1.25 mi12939+1459194+879194+8710863(Top 37%)7799(Top 48%)7799(Top 515%)
24M24.00 mi1.00 mi12801+1389122+729122+7210609(Top 37%)7615(Top 47%)7615(Top 503%)
40K24.85 mi0.85 mi12687+1149044+789044+7810442(Top 36%)7439(Top 46%)7439(Top 491%)
25.2M25.20 mi0.35 mi12702-159035+99035+914292(Top 49%)9177(Top 56%)9177(Top 606%)
FINISH26.22 mi1.02 mi12698+49004+319004+3113379(Top 46%)8737(Top 53%)8737(Top 577%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21
+97ft-345ft

Overall

12620

Males

9216

M60-64

9216

5K→10K

3.1 - 6.2 mi

Top 47%
×5
+79ft-138ft

Overall

13662

Males

9686

M60-64

9686

10K→15K

6.2 - 9.3 mi

Top 43%
×3
+67ft-78ft

Overall

12620

Males

9216

M60-64

9216

15K→20K

9.3 - 12.4 mi

Top 46%
×5
+106ft-86ft

Overall

13348

Males

9445

M60-64

9445

20K→HALF

12.4 - 13.1 mi

Top 43%
×2
+19ft-37ft

Overall

12599

Males

9193

M60-64

9193

HALF→25K

13.1 - 15.5 mi

Top 45%
×4
+66ft-88ft

Overall

13169

Males

9292

M60-64

9292

25K→30K

15.5 - 18.6 mi

Top 45%
×9
+181ft-148ft

Overall

13065

Males

9143

M60-64

9143

30K→20M

18.6 - 20.0 mi

Top 44%
×5
+64ft-50ft

Overall

12818

Males

8931

M60-64

8931

20M→21M

20.0 - 21.0 mi

Top 44%
×8
+106ft-24ft

Overall

12880

Males

8844

M60-64

8844

21M→35K

21.0 - 21.8 mi

Top 39%
×7
+17ft-86ft

Overall

11367

Males

8145

M60-64

8145

35K→23M

21.8 - 23.0 mi

Top 37%
×5
+23ft-63ft

Overall

10863

Males

7799

M60-64

7799

23M→24M

23.0 - 24.0 mi

Top 37%
×6
+12ft-82ft

Overall

10609

Males

7615

M60-64

7615

24M→40K

24.0 - 24.9 mi

Top 36%
×1
+6ft-20ft

Overall

10442

Males

7439

M60-64

7439

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1
+13ft-16ft

Overall

14292

Males

9177

M60-64

9177

25.2M→FINISH

25.2 - 26.2 mi

Top 46%
×2
+22ft-21ft

Overall

13379

Males

8737

M60-64

8737

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2518
Passed By
894
Net Change
+1624
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14322
5K → 10K488157+331#14322#13991
10K → 15K55034+516#13991#13475
15K → 20K188128+60#13475#13415
20K → HALF5014+36#13415#13379
HALF → 25K14286+56#13379#13323
25K → 30K219150+69#13323#13254
30K → 20M12865+63#13254#13191
20M → 21M10576+29#13191#13162
21M → 35K879+78#13162#13084
35K → 23M16621+145#13084#12939
23M → 24M15618+138#12939#12801
24M → 40K12713+114#12801#12687
40K → 25.2M3045-15#12687#12702
25.2M → FINISH8278+4#12702#12698
TOTALS2518894+1624
📊

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