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BOSTON MARATHON 2023

James Anderson

Bib: 2943•M

MD

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 7%
Gender (Male)
#0 / 15176
Top 12%
Division (M18-39)
#0 / 5285
Top 27%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:28
Rank: #1320
Start → 5K
19:28 | 6:16/mi
10K· 6.21 mi
39:13
Rank: #1614 (-294)
5K → 10K
19:45 | 6:21/mi
15K· 9.32 mi
59:24
Rank: #1885 (-271)
10K → 15K
20:11 | 6:30/mi
20K· 12.43 mi
1:19:41
Rank: #1998 (-113)
15K → 20K
20:17 | 6:32/mi
Half· 13.11 mi
1:24:02
Rank: #1994 (+4)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:39:41
Rank: #1969 (+25)
Half → 25K
15:39 | 6:27/mi
30K· 18.64 mi
2:00:29
Rank: #2037 (-68)
25K → 30K
20:48 | 6:42/mi
20M
2:09:46
Rank: #2085 (-48)
30K → 20M
9:17 | 6:50/mi
21M
2:16:44
Rank: #2061 (+24)
20M → 21M
6:58 | 6:58/mi
35K· 21.75 mi
2:21:39
Rank: #2069 (-8)
21M → 35K
4:55 | 6:34/mi
23M
2:30:31
Rank: #2158 (-89)
35K → 23M
8:52 | 7:05/mi
24M
2:36:57
Rank: #2118 (+40)
23M → 24M
6:26 | 6:26/mi
40K· 24.85 mi
2:42:02
Rank: #1978 (+140)
24M → 40K
5:05 | 5:57/mi
25.2M
2:44:15
Rank: #1924 (+54)
40K → 25.2M
2:13 | 6:26/mi
Finish· 26.22 mi
2:50:42
Rank: #1892 (+32)
25.2M → Finish
6:27 | 6:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:02
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:26:40
Pace6:37 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:0419:286:1619:28
6:16
-
10K
6.21 mi10:39:4939:136:1919:45
6:21
+0:05
15K
9.32 mi11:00:0059:246:2220:11
6:30
+0:09
20K
12.43 mi11:20:171:19:416:2520:17
6:32
+0:02
Half
13.11 mi11:24:381:24:026:254:21
6:23
-0:09
25K
15.53 mi11:40:171:39:416:2515:39
6:27
+0:04
30K
18.64 mi12:01:052:00:296:2820:48
6:42
+0:15
20M
20.00 mi12:10:222:09:466:299:17
6:50
+0:08
21M
21.00 mi12:17:202:16:446:316:58
6:58
+0:08
35K
21.75 mi12:22:152:21:396:314:55
6:34
-0:24
23M
23.00 mi12:31:072:30:316:338:52
7:05
+0:31
24M
24.00 mi12:37:332:36:576:326:26
6:26
-0:39
40K
24.85 mi12:42:382:42:026:315:05
5:57
-0:29
25.2M
25.20 mi12:44:512:44:156:312:13
6:26
+0:29
Finish
26.22 mi12:51:182:50:426:316:27
6:20
-0:06

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

5:57 /mi

Average Pace

6:31 /mi

Slowest Pace

7:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:52

70% of race

Time at Steady Pace

41:58

25% of race

Time at Slower Pace

8:52

5% of race

Average Pace: 6:31 /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 mi10:20:0419:286:1619:28
6:16
#1320
10K
6.21 mi10:39:4939:136:1919:45
6:21
#1614
15K
9.32 mi11:00:0059:246:2220:11
6:30
#1885
20K
12.43 mi11:20:171:19:416:2520:17
6:32
#1998
Half
13.11 mi11:24:381:24:026:254:21
6:23
#1994
25K
15.53 mi11:40:171:39:416:2515:39
6:27
#1969
30K
18.64 mi12:01:052:00:296:2820:48
6:42
#2037
20M
20.00 mi12:10:222:09:466:299:17
6:50
#2085
21M
21.00 mi12:17:202:16:446:316:58
6:58
#2061
35K
21.75 mi12:22:152:21:396:314:55
6:34
#2069
23M
23.00 mi12:31:072:30:316:338:52
7:05
#2158
24M
24.00 mi12:37:332:36:576:326:26
6:26
#2118
40K
24.85 mi12:42:382:42:026:315:05
5:57
#1978
25.2M
25.20 mi12:44:512:44:156:312:13
6:26
#1924
Finish
26.22 mi12:51:182:50:426:316:27
6:20
#1892
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1320125412542606(Top 10%)2495(Top 16%)2495(Top 47%)
10K6.21 mi3.10 mi1614-2941541-2871541-2872017(Top 8%)1928(Top 13%)1928(Top 36%)
15K9.32 mi3.11 mi1885-2711804-2631804-2632606(Top 10%)2495(Top 16%)2495(Top 47%)
20K12.43 mi3.11 mi1998-1131913-1091913-1092438(Top 9%)2334(Top 15%)2334(Top 44%)
Half13.11 mi0.68 mi1994+41910+31910+32092(Top 8%)2008(Top 13%)2008(Top 38%)
25K15.53 mi2.42 mi1969+251886+241886+241972(Top 7%)1888(Top 12%)1888(Top 36%)
30K18.64 mi3.11 mi2037-681954-681954-682367(Top 9%)2253(Top 15%)2253(Top 43%)
20M20.00 mi1.36 mi2085-481999-451999-452976(Top 11%)2796(Top 18%)2796(Top 53%)
21M21.00 mi1.00 mi2061+241974+251974+251982(Top 7%)1877(Top 12%)1877(Top 36%)
35K21.75 mi0.75 mi2069-81984-101984-102780(Top 10%)2607(Top 17%)2607(Top 49%)
23M23.00 mi1.25 mi2158-892068-842068-844178(Top 16%)3821(Top 25%)3821(Top 72%)
24M24.00 mi1.00 mi2118+402033+352033+351808(Top 7%)1704(Top 11%)1704(Top 32%)
40K24.85 mi0.85 mi1978+1401894+1391894+139288(Top 1%)265(Top 2%)265(Top 5%)
25.2M25.20 mi0.35 mi1924+541840+541840+54422(Top 2%)400(Top 3%)400(Top 8%)
Finish26.22 mi1.02 mi1892+321809+311809+311733(Top 7%)1629(Top 11%)1629(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2606

Males

2495

M18-39

2495

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2017

Males

1928

M18-39

1928

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2606

Males

2495

M18-39

2495

15K→20K

9.3 - 12.4 mi

Top 9%
×5stories
+106ft-86ft

Overall

2438

Males

2334

M18-39

2334

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2092

Males

2008

M18-39

2008

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1972

Males

1888

M18-39

1888

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2367

Males

2253

M18-39

2253

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2976

Males

2796

M18-39

2796

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1982

Males

1877

M18-39

1877

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2780

Males

2607

M18-39

2607

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4178

Males

3821

M18-39

3821

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1808

Males

1704

M18-39

1704

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

288

Males

265

M18-39

265

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

422

Males

400

M18-39

400

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1733

Males

1629

M18-39

1629

Passing Analysis

Category:
Athletes Passed
541
Passed By
1113
Net Change
-572
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1320
5K → 10K11305-294#1320#1614
10K → 15K9280-271#1614#1885
15K → 20K26139-113#1885#1998
20K → Half117+4#1998#1994
Half → 25K5732+25#1994#1969
25K → 30K45113-68#1969#2037
30K → 20M2371-48#2037#2085
20M → 21M3713+24#2085#2061
21M → 35K1523-8#2061#2069
35K → 23M21110-89#2069#2158
23M → 24M466+40#2158#2118
24M → 40K1400+140#2118#1978
40K → 25.2M551+54#1978#1924
25.2M → Finish4513+32#1924#1892
TOTALS5411113-572
📊

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