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BOSTON MARATHON 2025

Ruizhi (ray) Liao

Bib: 2835•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 2%
Gender (Male)
#0 / 16105
Top 3%
Division (M18-39)
#0 / 5642
Top 8%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:55
Rank: #545
Start → 5K
17:55 | 5:46/mi
10K· 6.21 mi
36:06
Rank: #621 (-76)
5K → 10K
18:11 | 5:51/mi
15K· 9.32 mi
54:34
Rank: #673 (-52)
10K → 15K
18:28 | 5:57/mi
20K· 12.43 mi
1:13:07
Rank: #699 (-26)
15K → 20K
18:33 | 5:58/mi
Half· 13.11 mi
1:17:09
Rank: #704 (-5)
20K → Half
4:02 | 5:55/mi
25K· 15.53 mi
1:31:31
Rank: #674 (+30)
Half → 25K
14:22 | 5:56/mi
30K· 18.64 mi
1:50:23
Rank: #640 (+34)
25K → 30K
18:52 | 6:04/mi
20M
1:58:52
Rank: #644 (-4)
30K → 20M
8:29 | 6:15/mi
21M
2:05:19
Rank: #630 (+14)
20M → 21M
6:27 | 6:27/mi
35K· 21.75 mi
2:09:46
Rank: #615 (+15)
21M → 35K
4:27 | 5:57/mi
23M
2:17:33
Rank: #605 (+10)
35K → 23M
7:47 | 6:13/mi
24M
2:23:29
Rank: #597 (+8)
23M → 24M
5:56 | 5:56/mi
40K· 24.85 mi
2:28:43
Rank: #588 (+9)
24M → 40K
5:14 | 6:07/mi
25.2M
2:30:58
Rank: #580 (+8)
40K → 25.2M
2:15 | 6:31/mi
Finish· 26.22 mi
2:36:54
Rank: #561 (+19)
25.2M → Finish
5:56 | 5:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:09
Pace5:53 /mi
2nd Half
Distance13.11 mi
Time1:19:45
Pace6:05 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3817:555:4617:55
5:46
-
10K
6.21 mi10:36:4936:065:4918:11
5:51
+0:05
15K
9.32 mi10:55:1754:345:5118:28
5:57
+0:06
20K
12.43 mi11:13:501:13:075:5318:33
5:58
+0:01
Half
13.11 mi11:17:521:17:095:534:02
5:55
-0:03
25K
15.53 mi11:32:141:31:315:5314:22
5:56
+0:01
30K
18.64 mi11:51:061:50:235:5518:52
6:04
+0:08
20M
20.00 mi11:59:351:58:525:578:29
6:15
+0:11
21M
21.00 mi12:06:022:05:195:586:27
6:27
+0:12
35K
21.75 mi12:10:292:09:465:584:27
5:57
-0:30
23M
23.00 mi12:18:162:17:335:597:47
6:13
+0:16
24M
24.00 mi12:24:122:23:295:595:56
5:56
-0:17
40K
24.85 mi12:29:262:28:435:595:14
6:07
+0:11
25.2M
25.20 mi12:31:412:30:585:592:15
6:31
+0:24
Finish
26.22 mi12:37:372:36:545:595:56
5:49
-0:42

Checkpoints & Pacing

📈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

5:46 /mi

Average Pace

5:59 /mi

Slowest Pace

6:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:28:12

94% of race

Time at Steady Pace

8:42

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:59 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:3817:555:4617:55
5:46
#545
10K
6.21 mi10:36:4936:065:4918:11
5:51
#621
15K
9.32 mi10:55:1754:345:5118:28
5:57
#673
20K
12.43 mi11:13:501:13:075:5318:33
5:58
#699
Half
13.11 mi11:17:521:17:095:534:02
5:55
#704
25K
15.53 mi11:32:141:31:315:5314:22
5:56
#674
30K
18.64 mi11:51:061:50:235:5518:52
6:04
#640
20M
20.00 mi11:59:351:58:525:578:29
6:15
#644
21M
21.00 mi12:06:022:05:195:586:27
6:27
#630
35K
21.75 mi12:10:292:09:465:584:27
5:57
#615
23M
23.00 mi12:18:162:17:335:597:47
6:13
#605
24M
24.00 mi12:24:122:23:295:595:56
5:56
#597
40K
24.85 mi12:29:262:28:435:595:14
6:07
#588
25.2M
25.20 mi12:31:412:30:585:592:15
6:31
#580
Finish
26.22 mi12:37:372:36:545:595:56
5:49
#561
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi545506506861(Top 3%)809(Top 5%)809(Top 14%)
10K6.21 mi3.10 mi621-76575-69575-69712(Top 3%)667(Top 4%)667(Top 12%)
15K9.32 mi3.11 mi673-52625-50625-50861(Top 3%)809(Top 5%)809(Top 14%)
20K12.43 mi3.11 mi699-26652-27652-27795(Top 3%)746(Top 5%)746(Top 13%)
Half13.11 mi0.68 mi704-5656-4656-4847(Top 3%)799(Top 5%)799(Top 14%)
25K15.53 mi2.42 mi674+30627+29627+29624(Top 2%)577(Top 4%)577(Top 10%)
30K18.64 mi3.11 mi640+34593+34593+34620(Top 2%)579(Top 4%)579(Top 10%)
20M20.00 mi1.36 mi644-4597-4597-4811(Top 3%)764(Top 5%)764(Top 14%)
21M21.00 mi1.00 mi630+14583+14583+14584(Top 2%)548(Top 3%)548(Top 10%)
35K21.75 mi0.75 mi615+15568+15568+15610(Top 2%)569(Top 4%)569(Top 10%)
23M23.00 mi1.25 mi605+10559+9559+9695(Top 2%)656(Top 4%)656(Top 12%)
24M24.00 mi1.00 mi597+8551+8551+8456(Top 2%)422(Top 3%)422(Top 7%)
40K24.85 mi0.85 mi588+9542+9542+9574(Top 2%)536(Top 3%)536(Top 10%)
25.2M25.20 mi0.35 mi580+8535+7535+7477(Top 2%)442(Top 3%)442(Top 8%)
Finish26.22 mi1.02 mi561+19518+17518+17539(Top 2%)504(Top 3%)504(Top 9%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

861

Males

809

M18-39

809

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

712

Males

667

M18-39

667

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

861

Males

809

M18-39

809

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

795

Males

746

M18-39

746

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

847

Males

799

M18-39

799

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

624

Males

577

M18-39

577

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

620

Males

579

M18-39

579

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

811

Males

764

M18-39

764

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

584

Males

548

M18-39

548

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

610

Males

569

M18-39

569

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

695

Males

656

M18-39

656

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

456

Males

422

M18-39

422

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

574

Males

536

M18-39

536

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

477

Males

442

M18-39

442

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

539

Males

504

M18-39

504

Passing Analysis

Category:
Athletes Passed
252
Passed By
268
Net Change
-16
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#545
5K → 10K985-76#545#621
10K → 15K860-52#621#673
15K → 20K1844-26#673#699
20K → Half16-5#699#704
Half → 25K399+30#704#674
25K → 30K5117+34#674#640
30K → 20M1216-4#640#644
20M → 21M2410+14#644#630
21M → 35K150+15#630#615
35K → 23M188+10#615#605
23M → 24M135+8#605#597
24M → 40K112+9#597#588
40K → 25.2M91+8#588#580
25.2M → Finish245+19#580#561
TOTALS252268-16
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing