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BOSTON MARATHON 2023

Erik Spencer

Bib: 1371•M

VA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Division (M18-39)
#0 / 5285
Top 18%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:35
Rank: #1441
Start → 5K
19:35 | 6:18/mi
10K· 6.21 mi
38:45
Rank: #1326 (+115)
5K → 10K
19:10 | 6:10/mi
15K· 9.32 mi
58:04
Rank: #1286 (+40)
10K → 15K
19:19 | 6:13/mi
20K· 12.43 mi
1:17:28
Rank: #1250 (+36)
15K → 20K
19:24 | 6:15/mi
Half· 13.11 mi
1:21:41
Rank: #1248 (+2)
20K → Half
4:13 | 6:11/mi
25K· 15.53 mi
1:36:41
Rank: #1196 (+52)
Half → 25K
15:00 | 6:11/mi
30K· 18.64 mi
1:56:37
Rank: #1190 (+6)
25K → 30K
19:56 | 6:25/mi
20M
2:05:18
Rank: #1171 (+19)
30K → 20M
8:41 | 6:23/mi
21M
2:12:09
Rank: #1156 (+15)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:16:41
Rank: #1136 (+20)
21M → 35K
4:32 | 6:04/mi
23M
2:24:48
Rank: #1134 (+2)
35K → 23M
8:07 | 6:29/mi
24M
2:31:10
Rank: #1137 (-3)
23M → 24M
6:22 | 6:22/mi
40K· 24.85 mi
2:36:53
Rank: #1157 (-20)
24M → 40K
5:43 | 6:41/mi
25.2M
2:39:25
Rank: #1173 (-16)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
2:46:08
Rank: #1221 (-48)
25.2M → Finish
6:43 | 6:35/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:41
Pace6:14 /mi
2nd Half
Distance13.11 mi
Time1:24:27
Pace6:27 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5119:356:1819:35
6:18
-
10K
6.21 mi10:39:0138:456:1419:10
6:10
-0:08
15K
9.32 mi10:58:2058:046:1419:19
6:13
+0:03
20K
12.43 mi11:17:441:17:286:1419:24
6:15
+0:02
Half
13.11 mi11:21:571:21:416:144:13
6:11
-0:04
25K
15.53 mi11:36:571:36:416:1315:00
6:11
0:00
30K
18.64 mi11:56:531:56:376:1519:56
6:25
+0:14
20M
20.00 mi12:05:342:05:186:168:41
6:23
-0:02
21M
21.00 mi12:12:252:12:096:186:51
6:51
+0:28
35K
21.75 mi12:16:572:16:416:174:32
6:04
-0:47
23M
23.00 mi12:25:042:24:486:188:07
6:29
+0:25
24M
24.00 mi12:31:262:31:106:186:22
6:22
-0:07
40K
24.85 mi12:37:092:36:536:195:43
6:41
+0:19
25.2M
25.20 mi12:39:412:39:256:202:32
7:21
+0:40
Finish
26.22 mi12:46:242:46:086:206:43
6:35
-0:46

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

6:04 /mi

Average Pace

6:20 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

42:55

26% of race

Time at Steady Pace

1:41:24

61% of race

Time at Slower Pace

21:49

13% of race

Average Pace: 6:20 /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 mi10:19:5119:356:1819:35
6:18
#1441
10K
6.21 mi10:39:0138:456:1419:10
6:10
#1326
15K
9.32 mi10:58:2058:046:1419:19
6:13
#1286
20K
12.43 mi11:17:441:17:286:1419:24
6:15
#1250
Half
13.11 mi11:21:571:21:416:144:13
6:11
#1248
25K
15.53 mi11:36:571:36:416:1315:00
6:11
#1196
30K
18.64 mi11:56:531:56:376:1519:56
6:25
#1190
20M
20.00 mi12:05:342:05:186:168:41
6:23
#1171
21M
21.00 mi12:12:252:12:096:186:51
6:51
#1156
35K
21.75 mi12:16:572:16:416:174:32
6:04
#1136
23M
23.00 mi12:25:042:24:486:188:07
6:29
#1134
24M
24.00 mi12:31:262:31:106:186:22
6:22
#1137
40K
24.85 mi12:37:092:36:536:195:43
6:41
#1157
25.2M
25.20 mi12:39:412:39:256:202:32
7:21
#1173
Finish
26.22 mi12:46:242:46:086:206:43
6:35
#1221
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1441137013701303(Top 5%)1241(Top 8%)1241(Top 23%)
10K6.21 mi3.10 mi1326+1151260+1101260+1101232(Top 5%)1169(Top 8%)1169(Top 22%)
15K9.32 mi3.11 mi1286+401223+371223+371303(Top 5%)1241(Top 8%)1241(Top 23%)
20K12.43 mi3.11 mi1250+361190+331190+331189(Top 4%)1136(Top 7%)1136(Top 21%)
Half13.11 mi0.68 mi1248+21189+11189+11280(Top 5%)1228(Top 8%)1228(Top 23%)
25K15.53 mi2.42 mi1196+521141+481141+48971(Top 4%)922(Top 6%)922(Top 17%)
30K18.64 mi3.11 mi1190+61135+61135+61260(Top 5%)1202(Top 8%)1202(Top 23%)
20M20.00 mi1.36 mi1171+191117+181117+181107(Top 4%)1061(Top 7%)1061(Top 20%)
21M21.00 mi1.00 mi1156+151102+151102+151564(Top 6%)1488(Top 10%)1488(Top 28%)
35K21.75 mi0.75 mi1136+201083+191083+19836(Top 3%)793(Top 5%)793(Top 15%)
23M23.00 mi1.25 mi1134+21082+11082+11355(Top 5%)1284(Top 8%)1284(Top 24%)
24M24.00 mi1.00 mi1137-31085-31085-31555(Top 6%)1471(Top 10%)1471(Top 28%)
40K24.85 mi0.85 mi1157-201103-181103-182249(Top 8%)2087(Top 14%)2087(Top 39%)
25.2M25.20 mi0.35 mi1173-161119-161119-163069(Top 12%)2792(Top 18%)2792(Top 53%)
Finish26.22 mi1.02 mi1221-481164-451164-452904(Top 11%)2629(Top 17%)2629(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1303

Males

1241

M18-39

1241

5K→10K

3.1 - 6.2 mi

Top 5%
×5stories
+79ft-138ft

Overall

1232

Males

1169

M18-39

1169

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1303

Males

1241

M18-39

1241

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1189

Males

1136

M18-39

1136

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1280

Males

1228

M18-39

1228

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

971

Males

922

M18-39

922

25K→30K

15.5 - 18.6 mi

Top 5%
×9stories
+181ft-148ft

Overall

1260

Males

1202

M18-39

1202

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1107

Males

1061

M18-39

1061

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1564

Males

1488

M18-39

1488

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

836

Males

793

M18-39

793

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1355

Males

1284

M18-39

1284

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1555

Males

1471

M18-39

1471

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2249

Males

2087

M18-39

2087

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3069

Males

2792

M18-39

2792

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2stories
+22ft-21ft

Overall

2904

Males

2629

M18-39

2629

Passing Analysis

Category:
Athletes Passed
507
Passed By
287
Net Change
+220
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1441
5K → 10K13722+115#1441#1326
10K → 15K7030+40#1326#1286
15K → 20K5620+36#1286#1250
20K → Half75+2#1250#1248
Half → 25K553+52#1248#1196
25K → 30K4438+6#1196#1190
30K → 20M289+19#1190#1171
20M → 21M3116+15#1171#1156
21M → 35K255+20#1156#1136
35K → 23M2422+2#1136#1134
23M → 24M1316-3#1134#1137
24M → 40K929-20#1137#1157
40K → 25.2M117-16#1157#1173
25.2M → Finish755-48#1173#1221
TOTALS507287+220
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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