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BOSTON MARATHON 2023

Zhaohui Xu

Bib: 12031•M

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 32%
Gender (Male)
#0 / 15176
Top 46%
Masters (Masters Men)
#0 / 9891
Top 34%
Division (M55-59)
#0 / 1422
Top 15%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:30
Rank: #10180
Start → 5K
23:30 | 7:34/mi
10K· 6.21 mi
46:22
Rank: #9672 (+508)
5K → 10K
22:52 | 7:22/mi
15K· 9.32 mi
1:09:08
Rank: #9329 (+343)
10K → 15K
22:46 | 7:20/mi
20K· 12.43 mi
1:32:20
Rank: #9228 (+101)
15K → 20K
23:12 | 7:28/mi
Half· 13.11 mi
1:37:24
Rank: #9244 (-16)
20K → Half
5:04 | 7:26/mi
25K· 15.53 mi
1:55:44
Rank: #9227 (+17)
Half → 25K
18:20 | 7:34/mi
30K· 18.64 mi
2:19:43
Rank: #9118 (+109)
25K → 30K
23:59 | 7:43/mi
20M
2:30:11
Rank: #9017 (+101)
30K → 20M
10:28 | 7:42/mi
21M
2:38:11
Rank: #8906 (+111)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:43:52
Rank: #8900 (+6)
21M → 35K
5:41 | 7:36/mi
23M
2:53:32
Rank: #8815 (+85)
35K → 23M
9:40 | 7:43/mi
24M
3:01:00
Rank: #8726 (+89)
23M → 24M
7:28 | 7:28/mi
40K· 24.85 mi
3:07:27
Rank: #8635 (+91)
24M → 40K
6:27 | 7:33/mi
25.2M
3:10:12
Rank: #8594 (+41)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:17:29
Rank: #8457 (+137)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:24
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:40:05
Pace7:38 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3023:307:3423:30
7:34
-
10K
6.21 mi11:14:2246:227:2822:52
7:22
-0:12
15K
9.32 mi11:37:081:09:087:2522:46
7:20
-0:02
20K
12.43 mi12:00:201:32:207:2623:12
7:28
+0:08
Half
13.11 mi12:05:241:37:247:265:04
7:26
-0:02
25K
15.53 mi12:23:441:55:447:2718:20
7:34
+0:08
30K
18.64 mi12:47:432:19:437:3023:59
7:43
+0:09
20M
20.00 mi12:58:112:30:117:3110:28
7:42
-0:01
21M
21.00 mi13:06:112:38:117:328:00
8:00
+0:18
35K
21.75 mi13:11:522:43:527:325:41
7:36
-0:24
23M
23.00 mi13:21:322:53:327:339:40
7:43
+0:07
24M
24.00 mi13:29:003:01:007:337:28
7:28
-0:15
40K
24.85 mi13:35:273:07:277:336:27
7:33
+0:05
25.2M
25.20 mi13:38:123:10:127:332:45
7:58
+0:25
Finish
26.22 mi13:45:293:17:297:327:17
7:09
-0:49

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

7:09 /mi

Average Pace

7:32 /mi

Slowest Pace

8:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:44

95% of race

Time at Steady Pace

10:45

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi10:51:3023:307:3423:30
7:34
#10180
10K
6.21 mi11:14:2246:227:2822:52
7:22
#9672
15K
9.32 mi11:37:081:09:087:2522:46
7:20
#9329
20K
12.43 mi12:00:201:32:207:2623:12
7:28
#9228
Half
13.11 mi12:05:241:37:247:265:04
7:26
#9244
25K
15.53 mi12:23:441:55:447:2718:20
7:34
#9227
30K
18.64 mi12:47:432:19:437:3023:59
7:43
#9118
20M
20.00 mi12:58:112:30:117:3110:28
7:42
#9017
21M
21.00 mi13:06:112:38:117:328:00
8:00
#8906
35K
21.75 mi13:11:522:43:527:325:41
7:36
#8900
23M
23.00 mi13:21:322:53:327:339:40
7:43
#8815
24M
24.00 mi13:29:003:01:007:337:28
7:28
#8726
40K
24.85 mi13:35:273:07:277:336:27
7:33
#8635
25.2M
25.20 mi13:38:123:10:127:332:45
7:58
#8594
Finish
26.22 mi13:45:293:17:297:327:17
7:09
#8457
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi10180822082208782(Top 33%)7411(Top 49%)7411(Top 521%)
10K6.21 mi3.10 mi9672+5087968+2527968+2529291(Top 35%)7738(Top 51%)7738(Top 544%)
15K9.32 mi3.11 mi9329+3437766+2027766+2028782(Top 33%)7411(Top 49%)7411(Top 521%)
20K12.43 mi3.11 mi9228+1017686+807686+809041(Top 34%)7522(Top 50%)7522(Top 529%)
Half13.11 mi0.68 mi9244-167693-77693-79548(Top 36%)7829(Top 52%)7829(Top 551%)
25K15.53 mi2.42 mi9227+177681+127681+129227(Top 35%)7566(Top 50%)7566(Top 532%)
30K18.64 mi3.11 mi9118+1097579+1027579+1028773(Top 33%)7142(Top 47%)7142(Top 502%)
20M20.00 mi1.36 mi9017+1017494+857494+858191(Top 31%)6714(Top 44%)6714(Top 472%)
21M21.00 mi1.00 mi8906+1117409+857409+857341(Top 28%)6086(Top 40%)6086(Top 428%)
35K21.75 mi0.75 mi8900+67394+157394+159202(Top 35%)7179(Top 47%)7179(Top 505%)
23M23.00 mi1.25 mi8815+857307+877307+877846(Top 29%)6330(Top 42%)6330(Top 445%)
24M24.00 mi1.00 mi8726+897237+707237+707464(Top 28%)5989(Top 39%)5989(Top 421%)
40K24.85 mi0.85 mi8635+917161+767161+766963(Top 26%)5616(Top 37%)5616(Top 395%)
25.2M25.20 mi0.35 mi8594+417132+297132+296349(Top 24%)5185(Top 34%)5185(Top 365%)
Finish26.22 mi1.02 mi8457+1377023+1097023+1096098(Top 23%)5005(Top 33%)5005(Top 352%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8782

Males

7411

M55-59

7411

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9291

Males

7738

M55-59

7738

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8782

Males

7411

M55-59

7411

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9041

Males

7522

M55-59

7522

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9548

Males

7829

M55-59

7829

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9227

Males

7566

M55-59

7566

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8773

Males

7142

M55-59

7142

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8191

Males

6714

M55-59

6714

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7341

Males

6086

M55-59

6086

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9202

Males

7179

M55-59

7179

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7846

Males

6330

M55-59

6330

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

7464

Males

5989

M55-59

5989

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

6963

Males

5616

M55-59

5616

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6349

Males

5185

M55-59

5185

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6098

Males

5005

M55-59

5005

Passing Analysis

Category:
Athletes Passed
2389*
Passed By
666
Net Change
+1723
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10180
5K → 10K622*114+508#10180#9672
10K → 15K37532+343#9672#9329
15K → 20K19190+101#9329#9228
20K → Half2137-16#9228#9244
Half → 25K118101+17#9244#9227
25K → 30K213104+109#9227#9118
30K → 20M14140+101#9118#9017
20M → 21M13120+111#9017#8906
21M → 35K4943+6#8906#8900
35K → 23M12035+85#8900#8815
23M → 24M10415+89#8815#8726
24M → 40K10817+91#8726#8635
40K → 25.2M443+41#8635#8594
25.2M → Finish15215+137#8594#8457
TOTALS2389*666+1723

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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