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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing
BOSTON MARATHON 2026

Jiacai Li

Bib: 6211 •M •Age: N/A

Boston Marathon logo
0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M50-54)
#0 / 1868
Race Day Weather
51°/41°F
overcast clouds
Personalized for Jiacai

Your Race Performance Report is ready

See how your race unfolded, where your performance changed, and what to focus on next.

Personalized by MyRace AI
Preview insight
Your pace by distance
Fastest segment · 7:59/mi at mile 3.1

Your report includes

  • Race Overview
  • Pacing & Splits
  • Performance Analysis
  • Segment Analysis
  • Passing Analysis
  • Potential Focus Areas
One-time purchase · Instant access · Downloadable PDF · Shareable report

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
24:49
3.11 mi
Rank: #16860
Start → 5K
24:49 | 8:00/mi
10K
49:53
6.21 mi
Rank: #17270 (-410)
5K → 10K
25:04 | 8:05/mi
15K
1:15:46
9.32 mi
Rank: #17940 (-670)
10K → 15K
25:53 | 8:20/mi
20K
1:42:30
12.43 mi
Rank: #18453 (-513)
15K → 20K
26:44 | 8:37/mi
HALF
1:48:19
13.11 mi
Rank: #18542 (-89)
20K → HALF
5:49 | 8:32/mi
25K
2:10:07
15.53 mi
Rank: #19008 (-466)
HALF → 25K
21:48 | 9:00/mi
30K
2:38:29
18.64 mi
Rank: #19219 (-211)
25K → 30K
28:22 | 9:08/mi
20M
2:50:52
20.00 mi
Rank: #19241 (-22)
30K → 20M
12:23 | 9:08/mi
21M
3:00:48
21.00 mi
Rank: #19295 (-54)
20M → 21M
9:56 | 9:56/mi
35K
3:07:29
21.75 mi
Rank: #19309 (-14)
21M → 35K
6:41 | 8:57/mi
23M
3:19:01
23.00 mi
Rank: #19337 (-28)
35K → 23M
11:32 | 9:13/mi
24M
3:27:54
24.00 mi
Rank: #19310 (+27)
23M → 24M
8:53 | 8:53/mi
40K
3:35:42
24.85 mi
Rank: #19310
24M → 40K
7:48 | 9:08/mi
25.2M
3:39:05
25.20 mi
Rank: #19315 (-5)
40K → 25.2M
3:23 | 9:49/mi
FINISH
3:48:05
26.22 mi
Rank: #19339 (-24)
25.2M → FINISH
9:00 | 8:50/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:48:19
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time1:59:46
Pace9:09 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:30:1224:498:0024:49
8:00
-
10K
6.21 mi10:55:1649:538:0225:04
8:05
+0:05
15K
9.32 mi11:21:091:15:468:0825:53
8:20
+0:15
20K
12.43 mi11:47:531:42:308:1526:44
8:37
+0:17
HALF
13.11 mi11:53:421:48:198:165:49
8:32
-0:05
25K
15.53 mi12:15:302:10:078:2321:48
9:00
+0:28
30K
18.64 mi12:43:522:38:298:3128:22
9:08
+0:08
20M
20.00 mi12:56:152:50:528:3312:23
9:08
0:00
21M
21.00 mi13:06:113:00:488:379:56
9:56
+0:48
35K
21.75 mi13:12:523:07:298:386:41
8:57
-0:59
23M
23.00 mi13:24:243:19:018:4011:32
9:13
+0:16
24M
24.00 mi13:33:173:27:548:408:53
8:53
-0:20
40K
24.85 mi13:41:053:35:428:417:48
9:08
+0:15
25.2M
25.20 mi13:44:283:39:058:423:23
9:49
+0:41
FINISH
26.22 mi13:53:283:48:058:439:00
8:50
-0:59

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

8:00 /mi

Average Pace

8:42 /mi

Slowest Pace

9:56 /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

1:48:19

47% of race

Time at Steady Pace

1:34:55

42% of race

Time at Slower Pace

24:51

11% of race

Average Pace: 8:42 /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 mi10:30:1224:498:0024:49
8:00
#16860
10K
6.21 mi10:55:1649:538:0225:04
8:05
#17270
15K
9.32 mi11:21:091:15:468:0825:53
8:20
#17940
20K
12.43 mi11:47:531:42:308:1526:44
8:37
#18453
HALF
13.11 mi11:53:421:48:198:165:49
8:32
#18542
25K
15.53 mi12:15:302:10:078:2321:48
9:00
#19008
30K
18.64 mi12:43:522:38:298:3128:22
9:08
#19219
20M
20.00 mi12:56:152:50:528:3312:23
9:08
#19241
21M
21.00 mi13:06:113:00:488:379:56
9:56
#19295
35K
21.75 mi13:12:523:07:298:386:41
8:57
#19309
23M
23.00 mi13:24:243:19:018:4011:32
9:13
#19337
24M
24.00 mi13:33:173:27:548:408:53
8:53
#19310
40K
24.85 mi13:41:053:35:428:417:48
9:08
#19310
25.2M
25.20 mi13:44:283:39:058:423:23
9:49
#19315
FINISH
26.22 mi13:53:283:48:058:439:00
8:50
#19339
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 mi16860109561095619156(Top 66%)11948(Top 73%)11948(Top 640%)
10K6.21 mi3.10 mi17270-41011115-15911115-15917751(Top 61%)11324(Top 69%)11324(Top 606%)
15K9.32 mi3.11 mi17940-67011403-28811403-28819156(Top 66%)11948(Top 73%)11948(Top 640%)
20K12.43 mi3.11 mi18453-51311639-23611639-23619896(Top 69%)12246(Top 75%)12246(Top 656%)
HALF13.11 mi0.68 mi18542-8911667-2811667-2820389(Top 70%)12497(Top 76%)12497(Top 669%)
25K15.53 mi2.42 mi19008-46611848-18111848-18121109(Top 73%)12801(Top 78%)12801(Top 685%)
30K18.64 mi3.11 mi19219-21111906-5811906-5820193(Top 70%)12275(Top 75%)12275(Top 657%)
20M20.00 mi1.36 mi19241-2211903+311903+319481(Top 67%)11874(Top 73%)11874(Top 636%)
21M21.00 mi1.00 mi19295-5411917-1411917-1420190(Top 70%)12161(Top 74%)12161(Top 651%)
35K21.75 mi0.75 mi19309-1411913+411913+419739(Top 68%)11839(Top 72%)11839(Top 634%)
23M23.00 mi1.25 mi19337-2811893+2011893+2019485(Top 67%)11689(Top 72%)11689(Top 626%)
24M24.00 mi1.00 mi19310+2711864+2911864+2918928(Top 65%)11376(Top 70%)11376(Top 609%)
40K24.85 mi0.85 mi1931011847+1711847+1718938(Top 65%)11329(Top 69%)11329(Top 606%)
25.2M25.20 mi0.35 mi19315-511849-211849-218634(Top 64%)11200(Top 69%)11200(Top 600%)
FINISH26.22 mi1.02 mi19339-2411841+811841+819775(Top 68%)11731(Top 72%)11731(Top 628%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21
+97ft-345ft

Overall

19156

Males

11948

M50-54

11948

5K→10K

3.1 - 6.2 mi

Top 61%
×5
+79ft-138ft

Overall

17751

Males

11324

M50-54

11324

10K→15K

6.2 - 9.3 mi

Top 66%
×3
+67ft-78ft

Overall

19156

Males

11948

M50-54

11948

15K→20K

9.3 - 12.4 mi

Top 69%
×5
+106ft-86ft

Overall

19896

Males

12246

M50-54

12246

20K→HALF

12.4 - 13.1 mi

Top 70%
×2
+19ft-37ft

Overall

20389

Males

12497

M50-54

12497

HALF→25K

13.1 - 15.5 mi

Top 73%
×4
+66ft-88ft

Overall

21109

Males

12801

M50-54

12801

25K→30K

15.5 - 18.6 mi

Top 70%
×9
+181ft-148ft

Overall

20193

Males

12275

M50-54

12275

30K→20M

18.6 - 20.0 mi

Top 67%
×5
+64ft-50ft

Overall

19481

Males

11874

M50-54

11874

20M→21M

20.0 - 21.0 mi

Top 70%
×8
+106ft-24ft

Overall

20190

Males

12161

M50-54

12161

21M→35K

21.0 - 21.8 mi

Top 68%
×7
+17ft-86ft

Overall

19739

Males

11839

M50-54

11839

35K→23M

21.8 - 23.0 mi

Top 67%
×5
+23ft-63ft

Overall

19485

Males

11689

M50-54

11689

23M→24M

23.0 - 24.0 mi

Top 65%
×6
+12ft-82ft

Overall

18928

Males

11376

M50-54

11376

24M→40K

24.0 - 24.9 mi

Top 65%
×1
+6ft-20ft

Overall

18938

Males

11329

M50-54

11329

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1
+13ft-16ft

Overall

18634

Males

11200

M50-54

11200

25.2M→FINISH

25.2 - 26.2 mi

Top 68%
×2
+22ft-21ft

Overall

19775

Males

11731

M50-54

11731

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
903
Passed By
1718
Net Change
-2479
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16860
5K → 10K127200-410#16860#17270
10K → 15K37200-670#17270#17940
15K → 20K49200-513#17940#18453
20K → HALF796-89#18453#18542
HALF → 25K43200-466#18542#19008
25K → 30K138200-211#19008#19219
30K → 20M86108-22#19219#19241
20M → 21M61115-54#19241#19295
21M → 35K6276-14#19295#19309
35K → 23M75103-28#19309#19337
23M → 24M7851+27#19337#19310
24M → 40K62620#19310#19310
40K → 25.2M2732-5#19310#19315
25.2M → FINISH5175-24#19315#19339
TOTALS9031718-2479
📊

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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