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BOSTON MARATHON 2025

Spencer Imbach

Bib: 5246•M

MD

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 6%
Division (M18-39)
#0 / 5642
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:29
Rank: #2243
Start → 5K
19:29 | 6:16/mi
10K· 6.21 mi
38:36
Rank: #1933 (+310)
5K → 10K
19:07 | 6:09/mi
15K· 9.32 mi
57:39
Rank: #1785 (+148)
10K → 15K
19:03 | 6:08/mi
20K· 12.43 mi
1:16:45
Rank: #1654 (+131)
15K → 20K
19:06 | 6:09/mi
Half· 13.11 mi
1:20:55
Rank: #1637 (+17)
20K → Half
4:10 | 6:06/mi
25K· 15.53 mi
1:35:50
Rank: #1549 (+88)
Half → 25K
14:55 | 6:09/mi
30K· 18.64 mi
1:55:15
Rank: #1411 (+138)
25K → 30K
19:25 | 6:15/mi
20M
2:03:39
Rank: #1324 (+87)
30K → 20M
8:24 | 6:11/mi
21M
2:10:06
Rank: #1257 (+67)
20M → 21M
6:27 | 6:27/mi
35K· 21.75 mi
2:14:33
Rank: #1218 (+39)
21M → 35K
4:27 | 5:57/mi
23M
2:22:11
Rank: #1113 (+105)
35K → 23M
7:38 | 6:06/mi
24M
2:28:08
Rank: #1059 (+54)
23M → 24M
5:57 | 5:57/mi
40K· 24.85 mi
2:33:24
Rank: #1021 (+38)
24M → 40K
5:16 | 6:10/mi
25.2M
2:35:44
Rank: #1014 (+7)
40K → 25.2M
2:20 | 6:46/mi
Finish· 26.22 mi
2:41:51
Rank: #989 (+25)
25.2M → Finish
6:07 | 6:00/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:20:55
Pace6:10 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:20:56
Pace6:10 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4019:296:1619:29
6:16
-
10K
6.21 mi10:41:4738:366:1319:07
6:09
-0:07
15K
9.32 mi11:00:5057:396:1119:03
6:08
-0:01
20K
12.43 mi11:19:561:16:456:1119:06
6:09
+0:01
Half
13.11 mi11:24:061:20:556:104:10
6:06
-0:03
25K
15.53 mi11:39:011:35:506:1014:55
6:09
+0:03
30K
18.64 mi11:58:261:55:156:1119:25
6:15
+0:06
20M
20.00 mi12:06:502:03:396:118:24
6:11
-0:04
21M
21.00 mi12:13:172:10:066:126:27
6:27
+0:16
35K
21.75 mi12:17:442:14:336:114:27
5:57
-0:30
23M
23.00 mi12:25:222:22:116:117:38
6:06
+0:09
24M
24.00 mi12:31:192:28:086:105:57
5:57
-0:09
40K
24.85 mi12:36:352:33:246:105:16
6:10
+0:13
25.2M
25.20 mi12:38:552:35:446:112:20
6:46
+0:36
Finish
26.22 mi12:45:022:41:516:116:07
6:00
-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

5:57 /mi

Average Pace

6:11 /mi

Slowest Pace

6:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:31

99% of race

Time at Steady Pace

2:20

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:10 /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 mi10:22:4019:296:1619:29
6:16
#2243
10K
6.21 mi10:41:4738:366:1319:07
6:09
#1933
15K
9.32 mi11:00:5057:396:1119:03
6:08
#1785
20K
12.43 mi11:19:561:16:456:1119:06
6:09
#1654
Half
13.11 mi11:24:061:20:556:104:10
6:06
#1637
25K
15.53 mi11:39:011:35:506:1014:55
6:09
#1549
30K
18.64 mi11:58:261:55:156:1119:25
6:15
#1411
20M
20.00 mi12:06:502:03:396:118:24
6:11
#1324
21M
21.00 mi12:13:172:10:066:126:27
6:27
#1257
35K
21.75 mi12:17:442:14:336:114:27
5:57
#1218
23M
23.00 mi12:25:222:22:116:117:38
6:06
#1113
24M
24.00 mi12:31:192:28:086:105:57
5:57
#1059
40K
24.85 mi12:36:352:33:246:105:16
6:10
#1021
25.2M
25.20 mi12:38:552:35:446:112:20
6:46
#1014
Finish
26.22 mi12:45:022:41:516:116:07
6:00
#989
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2243214221421516(Top 5%)1441(Top 9%)1441(Top 26%)
10K6.21 mi3.10 mi1933+3101841+3011841+3011679(Top 6%)1598(Top 10%)1598(Top 28%)
15K9.32 mi3.11 mi1785+1481697+1441697+1441516(Top 5%)1441(Top 9%)1441(Top 26%)
20K12.43 mi3.11 mi1654+1311570+1271570+1271347(Top 5%)1275(Top 8%)1275(Top 23%)
Half13.11 mi0.68 mi1637+171553+171553+171524(Top 5%)1447(Top 9%)1447(Top 26%)
25K15.53 mi2.42 mi1549+881467+861467+861282(Top 5%)1213(Top 8%)1213(Top 21%)
30K18.64 mi3.11 mi1411+1381335+1321335+1321055(Top 4%)991(Top 6%)991(Top 18%)
20M20.00 mi1.36 mi1324+871249+861249+86688(Top 2%)648(Top 4%)648(Top 11%)
21M21.00 mi1.00 mi1257+671186+631186+63595(Top 2%)559(Top 3%)559(Top 10%)
35K21.75 mi0.75 mi1218+391147+391147+39627(Top 2%)586(Top 4%)586(Top 10%)
23M23.00 mi1.25 mi1113+1051048+991048+99486(Top 2%)458(Top 3%)458(Top 8%)
24M24.00 mi1.00 mi1059+54998+50998+50497(Top 2%)461(Top 3%)461(Top 8%)
40K24.85 mi0.85 mi1021+38960+38960+38659(Top 2%)615(Top 4%)615(Top 11%)
25.2M25.20 mi0.35 mi1014+7953+7953+7880(Top 3%)813(Top 5%)813(Top 14%)
Finish26.22 mi1.02 mi989+25929+24929+24912(Top 3%)857(Top 5%)857(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1516

Males

1441

M18-39

1441

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1679

Males

1598

M18-39

1598

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1516

Males

1441

M18-39

1441

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1347

Males

1275

M18-39

1275

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1524

Males

1447

M18-39

1447

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1282

Males

1213

M18-39

1213

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1055

Males

991

M18-39

991

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

688

Males

648

M18-39

648

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

595

Males

559

M18-39

559

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

627

Males

586

M18-39

586

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

486

Males

458

M18-39

458

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

497

Males

461

M18-39

461

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

659

Males

615

M18-39

615

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

880

Males

813

M18-39

813

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

912

Males

857

M18-39

857

Passing Analysis

Category:
Athletes Passed
1323
Passed By
69
Net Change
+1254
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2243
5K → 10K33121+310#2243#1933
10K → 15K1568+148#1933#1785
15K → 20K1376+131#1785#1654
20K → Half236+17#1654#1637
Half → 25K924+88#1637#1549
25K → 30K1479+138#1549#1411
30K → 20M881+87#1411#1324
20M → 21M703+67#1324#1257
21M → 35K390+39#1257#1218
35K → 23M1050+105#1218#1113
23M → 24M540+54#1113#1059
24M → 40K435+38#1059#1021
40K → 25.2M114+7#1021#1014
25.2M → Finish272+25#1014#989
TOTALS132369+1254
📊

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