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BOSTON MARATHON 2023

Thomas Fan

Bib: 4034•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 30%
Masters (Masters Men)
#0 / 9891
Top 16%
Division (M40-44)
#0 / 2241
Top 39%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:48
Rank: #6333
Start → 5K
21:48 | 7:01/mi
10K· 6.21 mi
42:46
Rank: #5680 (+653)
5K → 10K
20:58 | 6:45/mi
15K· 9.32 mi
1:03:50
Rank: #5458 (+222)
10K → 15K
21:04 | 6:47/mi
20K· 12.43 mi
1:24:49
Rank: #5075 (+383)
15K → 20K
20:59 | 6:45/mi
Half· 13.11 mi
1:29:24
Rank: #5048 (+27)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:45:47
Rank: #4791 (+257)
Half → 25K
16:23 | 6:45/mi
30K· 18.64 mi
2:07:46
Rank: #4788 (+3)
25K → 30K
21:59 | 7:05/mi
20M
2:17:29
Rank: #4785 (+3)
30K → 20M
9:43 | 7:09/mi
21M
2:25:04
Rank: #4790 (-5)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:30:19
Rank: #4807 (-17)
21M → 35K
5:15 | 7:01/mi
23M
2:39:32
Rank: #4827 (-20)
35K → 23M
9:13 | 7:22/mi
24M
2:46:52
Rank: #4874 (-47)
23M → 24M
7:20 | 7:20/mi
40K· 24.85 mi
2:53:20
Rank: #4925 (-51)
24M → 40K
6:28 | 7:34/mi
25.2M
2:56:15
Rank: #4962 (-37)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:03:57
Rank: #5037 (-75)
25.2M → Finish
7:42 | 7:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:24
Pace6:49 /mi
2nd Half
Distance13.11 mi
Time1:34:33
Pace7:13 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:0221:487:0121:48
7:01
-
10K
6.21 mi10:46:0042:466:5320:58
6:45
-0:16
15K
9.32 mi11:07:041:03:506:5121:04
6:47
+0:02
20K
12.43 mi11:28:031:24:496:4920:59
6:45
-0:02
Half
13.11 mi11:32:381:29:246:494:35
6:43
-0:02
25K
15.53 mi11:49:011:45:476:4916:23
6:45
+0:02
30K
18.64 mi12:11:002:07:466:5121:59
7:05
+0:20
20M
20.00 mi12:20:432:17:296:529:43
7:09
+0:04
21M
21.00 mi12:28:182:25:046:547:35
7:35
+0:26
35K
21.75 mi12:33:332:30:196:555:15
7:01
-0:34
23M
23.00 mi12:42:462:39:326:569:13
7:22
+0:21
24M
24.00 mi12:50:062:46:526:577:20
7:20
-0:02
40K
24.85 mi12:56:342:53:206:586:28
7:34
+0:14
25.2M
25.20 mi12:59:292:56:157:002:55
8:27
+0:53
Finish
26.22 mi13:07:113:03:577:017:42
7:33
-0:54

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

6:43 /mi

Average Pace

7:01 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:59

46% of race

Time at Steady Pace

58:45

32% of race

Time at Slower Pace

41:13

22% of race

Average Pace: 7:01 /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 mi10:25:0221:487:0121:48
7:01
#6333
10K
6.21 mi10:46:0042:466:5320:58
6:45
#5680
15K
9.32 mi11:07:041:03:506:5121:04
6:47
#5458
20K
12.43 mi11:28:031:24:496:4920:59
6:45
#5075
Half
13.11 mi11:32:381:29:246:494:35
6:43
#5048
25K
15.53 mi11:49:011:45:476:4916:23
6:45
#4791
30K
18.64 mi12:11:002:07:466:5121:59
7:05
#4788
20M
20.00 mi12:20:432:17:296:529:43
7:09
#4785
21M
21.00 mi12:28:182:25:046:547:35
7:35
#4790
35K
21.75 mi12:33:332:30:196:555:15
7:01
#4807
23M
23.00 mi12:42:462:39:326:569:13
7:22
#4827
24M
24.00 mi12:50:062:46:526:577:20
7:20
#4874
40K
24.85 mi12:56:342:53:206:586:28
7:34
#4925
25.2M
25.20 mi12:59:292:56:157:002:55
8:27
#4962
Finish
26.22 mi13:07:113:03:577:017:42
7:33
#5037
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6333576257624933(Top 19%)4584(Top 30%)4584(Top 205%)
10K6.21 mi3.10 mi5680+6535223+5395223+5394808(Top 18%)4465(Top 29%)4465(Top 199%)
15K9.32 mi3.11 mi5458+2225042+1815042+1814933(Top 19%)4584(Top 30%)4584(Top 205%)
20K12.43 mi3.11 mi5075+3834712+3304712+3304029(Top 15%)3783(Top 25%)3783(Top 169%)
Half13.11 mi0.68 mi5048+274688+244688+244559(Top 17%)4251(Top 28%)4251(Top 190%)
25K15.53 mi2.42 mi4791+2574460+2284460+2283812(Top 14%)3586(Top 24%)3586(Top 160%)
30K18.64 mi3.11 mi4788+34454+64454+64801(Top 18%)4426(Top 29%)4426(Top 198%)
20M20.00 mi1.36 mi4785+34451+34451+34868(Top 18%)4433(Top 29%)4433(Top 198%)
21M21.00 mi1.00 mi4790-5445144514994(Top 19%)4472(Top 29%)4472(Top 200%)
35K21.75 mi0.75 mi4807-174466-154466-155410(Top 20%)4806(Top 32%)4806(Top 214%)
23M23.00 mi1.25 mi4827-204479-134479-135612(Top 21%)4914(Top 32%)4914(Top 219%)
24M24.00 mi1.00 mi4874-474510-314510-316564(Top 25%)5454(Top 36%)5454(Top 243%)
40K24.85 mi0.85 mi4925-514538-284538-287053(Top 26%)5646(Top 37%)5646(Top 252%)
25.2M25.20 mi0.35 mi4962-374569-314569-319124(Top 34%)6784(Top 45%)6784(Top 303%)
Finish26.22 mi1.02 mi5037-754628-594628-598912(Top 33%)6690(Top 44%)6690(Top 299%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

4933

Males

4584

M40-44

4584

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4808

Males

4465

M40-44

4465

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

4933

Males

4584

M40-44

4584

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4029

Males

3783

M40-44

3783

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4559

Males

4251

M40-44

4251

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3812

Males

3586

M40-44

3586

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

4801

Males

4426

M40-44

4426

30K→20M

18.6 - 20.0 mi

Top 18%
×5stories
+64ft-50ft

Overall

4868

Males

4433

M40-44

4433

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

4994

Males

4472

M40-44

4472

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5410

Males

4806

M40-44

4806

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5612

Males

4914

M40-44

4914

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6564

Males

5454

M40-44

5454

24M→40K

24.0 - 24.9 mi

Top 26%
×1story
+6ft-20ft

Overall

7053

Males

5646

M40-44

5646

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9124

Males

6784

M40-44

6784

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8912

Males

6690

M40-44

6690

Passing Analysis

Category:
Athletes Passed
2078
Passed By
782
Net Change
+1296
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6333
5K → 10K67623+653#6333#5680
10K → 15K25937+222#5680#5458
15K → 20K3896+383#5458#5075
20K → Half4215+27#5075#5048
Half → 25K2625+257#5048#4791
25K → 30K140137+3#4791#4788
30K → 20M6764+3#4788#4785
20M → 21M5358-5#4785#4790
21M → 35K3855-17#4790#4807
35K → 23M6787-20#4807#4827
23M → 24M3582-47#4827#4874
24M → 40K2475-51#4874#4925
40K → 25.2M845-37#4925#4962
25.2M → Finish1893-75#4962#5037
TOTALS2078782+1296
📊

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