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BOSTON MARATHON 2023

Shanfu Tian

Bib: 8045•M

BC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 10%
Division (M18-39)
#0 / 5285
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:30
Rank: #1365
Start → 5K
19:30 | 6:17/mi
10K· 6.21 mi
39:12
Rank: #1605 (-240)
5K → 10K
19:42 | 6:20/mi
15K· 9.32 mi
59:12
Rank: #1796 (-191)
10K → 15K
20:00 | 6:26/mi
20K· 12.43 mi
1:19:11
Rank: #1813 (-17)
15K → 20K
19:59 | 6:26/mi
Half· 13.11 mi
1:23:31
Rank: #1822 (-9)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:39:09
Rank: #1819 (+3)
Half → 25K
15:38 | 6:27/mi
30K· 18.64 mi
1:59:37
Rank: #1812 (+7)
25K → 30K
20:28 | 6:35/mi
20M
2:08:30
Rank: #1768 (+44)
30K → 20M
8:53 | 6:32/mi
21M
2:15:19
Rank: #1736 (+32)
20M → 21M
6:49 | 6:49/mi
35K· 21.75 mi
2:20:04
Rank: #1726 (+10)
21M → 35K
4:45 | 6:21/mi
23M
2:28:13
Rank: #1694 (+32)
35K → 23M
8:09 | 6:31/mi
24M
2:34:30
Rank: #1653 (+41)
23M → 24M
6:17 | 6:17/mi
40K· 24.85 mi
2:39:58
Rank: #1612 (+41)
24M → 40K
5:28 | 6:24/mi
25.2M
2:42:16
Rank: #1595 (+17)
40K → 25.2M
2:18 | 6:40/mi
Finish· 26.22 mi
2:48:29
Rank: #1541 (+54)
25.2M → Finish
6:13 | 6:06/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:31
Pace6:22 /mi
2nd Half
Distance13.11 mi
Time1:24:58
Pace6:29 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:44:3119:306:1719:30
6:17
-
10K
6.21 mi11:04:1339:126:1919:42
6:20
+0:03
15K
9.32 mi11:24:1359:126:2120:00
6:26
+0:06
20K
12.43 mi11:44:121:19:116:2219:59
6:26
0:00
Half
13.11 mi11:48:321:23:316:224:20
6:21
-0:05
25K
15.53 mi12:04:101:39:096:2315:38
6:27
+0:06
30K
18.64 mi12:24:381:59:376:2520:28
6:35
+0:08
20M
20.00 mi12:33:312:08:306:258:53
6:32
-0:03
21M
21.00 mi12:40:202:15:196:276:49
6:49
+0:17
35K
21.75 mi12:45:052:20:046:264:45
6:21
-0:28
23M
23.00 mi12:53:142:28:136:278:09
6:31
+0:10
24M
24.00 mi12:59:312:34:306:266:17
6:17
-0:14
40K
24.85 mi13:04:592:39:586:265:28
6:24
+0:07
25.2M
25.20 mi13:07:172:42:166:262:18
6:40
+0:16
Finish
26.22 mi13:13:302:48:296:266:13
6:06
-0:34

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

6:06 /mi

Average Pace

6:26 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:40

96% of race

Time at Steady Pace

6:49

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:26 /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 mi10:44:3119:306:1719:30
6:17
#1365
10K
6.21 mi11:04:1339:126:1919:42
6:20
#1605
15K
9.32 mi11:24:1359:126:2120:00
6:26
#1796
20K
12.43 mi11:44:121:19:116:2219:59
6:26
#1813
Half
13.11 mi11:48:321:23:316:224:20
6:21
#1822
25K
15.53 mi12:04:101:39:096:2315:38
6:27
#1819
30K
18.64 mi12:24:381:59:376:2520:28
6:35
#1812
20M
20.00 mi12:33:312:08:306:258:53
6:32
#1768
21M
21.00 mi12:40:202:15:196:276:49
6:49
#1736
35K
21.75 mi12:45:052:20:046:264:45
6:21
#1726
23M
23.00 mi12:53:142:28:136:278:09
6:31
#1694
24M
24.00 mi12:59:312:34:306:266:17
6:17
#1653
40K
24.85 mi13:04:592:39:586:265:28
6:24
#1612
25.2M
25.20 mi13:07:172:42:166:262:18
6:40
#1595
Finish
26.22 mi13:13:302:48:296:266:13
6:06
#1541
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1365129712972287(Top 9%)2195(Top 14%)2195(Top 42%)
10K6.21 mi3.10 mi1605-2401532-2351532-2351939(Top 7%)1858(Top 12%)1858(Top 35%)
15K9.32 mi3.11 mi1796-1911717-1851717-1852287(Top 9%)2195(Top 14%)2195(Top 42%)
20K12.43 mi3.11 mi1813-171736-191736-191929(Top 7%)1851(Top 12%)1851(Top 35%)
Half13.11 mi0.68 mi1822-91743-71743-71963(Top 7%)1886(Top 12%)1886(Top 36%)
25K15.53 mi2.42 mi1819+31739+41739+41931(Top 7%)1848(Top 12%)1848(Top 35%)
30K18.64 mi3.11 mi1812+71733+61733+61899(Top 7%)1817(Top 12%)1817(Top 34%)
20M20.00 mi1.36 mi1768+441690+431690+431583(Top 6%)1511(Top 10%)1511(Top 29%)
21M21.00 mi1.00 mi1736+321662+281662+281452(Top 5%)1384(Top 9%)1384(Top 26%)
35K21.75 mi0.75 mi1726+101653+91653+91735(Top 7%)1648(Top 11%)1648(Top 31%)
23M23.00 mi1.25 mi1694+321621+321621+321449(Top 5%)1376(Top 9%)1376(Top 26%)
24M24.00 mi1.00 mi1653+411580+411580+411305(Top 5%)1235(Top 8%)1235(Top 23%)
40K24.85 mi0.85 mi1612+411540+401540+401188(Top 4%)1123(Top 7%)1123(Top 21%)
25.2M25.20 mi0.35 mi1595+171525+151525+15847(Top 3%)808(Top 5%)808(Top 15%)
Finish26.22 mi1.02 mi1541+541473+521473+52984(Top 4%)938(Top 6%)938(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2287

Males

2195

M18-39

2195

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1939

Males

1858

M18-39

1858

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2287

Males

2195

M18-39

2195

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1929

Males

1851

M18-39

1851

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1963

Males

1886

M18-39

1886

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1931

Males

1848

M18-39

1848

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1899

Males

1817

M18-39

1817

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1583

Males

1511

M18-39

1511

20M→21M

20.0 - 21.0 mi

Top 5%
×8stories
+106ft-24ft

Overall

1452

Males

1384

M18-39

1384

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1735

Males

1648

M18-39

1648

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1449

Males

1376

M18-39

1376

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1305

Males

1235

M18-39

1235

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1188

Males

1123

M18-39

1123

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

847

Males

808

M18-39

808

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

984

Males

938

M18-39

938

Passing Analysis

Category:
Athletes Passed
509
Passed By
685
Net Change
-176
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1365
5K → 10K14254-240#1365#1605
10K → 15K14205-191#1605#1796
15K → 20K4663-17#1796#1813
20K → Half716-9#1813#1822
Half → 25K2926+3#1822#1819
25K → 30K6154+7#1819#1812
30K → 20M5511+44#1812#1768
20M → 21M419+32#1768#1736
21M → 35K2616+10#1736#1726
35K → 23M4513+32#1726#1694
23M → 24M465+41#1694#1653
24M → 40K498+41#1653#1612
40K → 25.2M192+17#1612#1595
25.2M → Finish573+54#1595#1541
TOTALS509685-176
📊

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