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BOSTON MARATHON 2025

Spencer Busby

Bib: 1646•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 6%
Division (M18-39)
#0 / 5642
Top 15%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:19
Rank: #1944
Start → 5K
19:19 | 6:13/mi
10K· 6.21 mi
38:41
Rank: #2003 (-59)
5K → 10K
19:22 | 6:14/mi
15K· 9.32 mi
57:55
Rank: #1908 (+95)
10K → 15K
19:14 | 6:11/mi
20K· 12.43 mi
1:17:00
Rank: #1732 (+176)
15K → 20K
19:05 | 6:09/mi
Half· 13.11 mi
1:21:14
Rank: #1749 (-17)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:36:07
Rank: #1633 (+116)
Half → 25K
14:53 | 6:08/mi
30K· 18.64 mi
1:55:45
Rank: #1526 (+107)
25K → 30K
19:38 | 6:19/mi
20M
2:04:15
Rank: #1434 (+92)
30K → 20M
8:30 | 6:15/mi
21M
2:10:29
Rank: #1320 (+114)
20M → 21M
6:14 | 6:14/mi
35K· 21.75 mi
2:14:56
Rank: #1266 (+54)
21M → 35K
4:27 | 5:57/mi
23M
2:22:32
Rank: #1160 (+106)
35K → 23M
7:36 | 6:04/mi
24M
2:28:45
Rank: #1138 (+22)
23M → 24M
6:13 | 6:13/mi
40K· 24.85 mi
2:34:11
Rank: #1126 (+12)
24M → 40K
5:26 | 6:21/mi
25.2M
2:36:27
Rank: #1103 (+23)
40K → 25.2M
2:16 | 6:34/mi
Finish· 26.22 mi
2:42:28
Rank: #1050 (+53)
25.2M → Finish
6:01 | 5:54/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:21:14
Pace6:12 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:21:14
Pace6:12 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:4619:196:1319:19
6:13
-
10K
6.21 mi10:39:0838:416:1419:22
6:14
+0:01
15K
9.32 mi10:58:2257:556:1319:14
6:11
-0:03
20K
12.43 mi11:17:271:17:006:1219:05
6:09
-0:02
Half
13.11 mi11:21:411:21:146:124:14
6:12
+0:03
25K
15.53 mi11:36:341:36:076:1114:53
6:08
-0:04
30K
18.64 mi11:56:121:55:456:1319:38
6:19
+0:11
20M
20.00 mi12:04:422:04:156:138:30
6:15
-0:04
21M
21.00 mi12:10:562:10:296:136:14
6:14
-0:01
35K
21.75 mi12:15:232:14:566:124:27
5:57
-0:17
23M
23.00 mi12:22:592:22:326:127:36
6:04
+0:07
24M
24.00 mi12:29:122:28:456:126:13
6:13
+0:09
40K
24.85 mi12:34:382:34:116:125:26
6:21
+0:08
25.2M
25.20 mi12:36:542:36:276:132:16
6:34
+0:13
Finish
26.22 mi12:42:552:42:286:126:01
5:54
-0:40

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

5:54 /mi

Average Pace

6:12 /mi

Slowest Pace

6:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:12

99% of race

Time at Steady Pace

2:16

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:12 /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 mi10:19:4619:196:1319:19
6:13
#1944
10K
6.21 mi10:39:0838:416:1419:22
6:14
#2003
15K
9.32 mi10:58:2257:556:1319:14
6:11
#1908
20K
12.43 mi11:17:271:17:006:1219:05
6:09
#1732
Half
13.11 mi11:21:411:21:146:124:14
6:12
#1749
25K
15.53 mi11:36:341:36:076:1114:53
6:08
#1633
30K
18.64 mi11:56:121:55:456:1319:38
6:19
#1526
20M
20.00 mi12:04:422:04:156:138:30
6:15
#1434
21M
21.00 mi12:10:562:10:296:136:14
6:14
#1320
35K
21.75 mi12:15:232:14:566:124:27
5:57
#1266
23M
23.00 mi12:22:592:22:326:127:36
6:04
#1160
24M
24.00 mi12:29:122:28:456:126:13
6:13
#1138
40K
24.85 mi12:34:382:34:116:125:26
6:21
#1126
25.2M
25.20 mi12:36:542:36:276:132:16
6:34
#1103
Finish
26.22 mi12:42:552:42:286:126:01
5:54
#1050
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1944184718471799(Top 6%)1710(Top 11%)1710(Top 30%)
10K6.21 mi3.10 mi2003-591908-611908-612055(Top 7%)1958(Top 12%)1958(Top 35%)
15K9.32 mi3.11 mi1908+951814+941814+941799(Top 6%)1710(Top 11%)1710(Top 30%)
20K12.43 mi3.11 mi1732+1761646+1681646+1681326(Top 5%)1255(Top 8%)1255(Top 22%)
Half13.11 mi0.68 mi1749-171662-161662-161949(Top 7%)1858(Top 12%)1858(Top 33%)
25K15.53 mi2.42 mi1633+1161550+1121550+1121227(Top 4%)1160(Top 7%)1160(Top 21%)
30K18.64 mi3.11 mi1526+1071446+1041446+1041256(Top 4%)1185(Top 7%)1185(Top 21%)
20M20.00 mi1.36 mi1434+921354+921354+92862(Top 3%)814(Top 5%)814(Top 14%)
21M21.00 mi1.00 mi1320+1141246+1081246+108299(Top 1%)280(Top 2%)280(Top 5%)
35K21.75 mi0.75 mi1266+541193+531193+53631(Top 2%)590(Top 4%)590(Top 10%)
23M23.00 mi1.25 mi1160+1061093+1001093+100439(Top 2%)413(Top 3%)413(Top 7%)
24M24.00 mi1.00 mi1138+221072+211072+211065(Top 4%)1001(Top 6%)1001(Top 18%)
40K24.85 mi0.85 mi1126+121060+121060+121095(Top 4%)1024(Top 6%)1024(Top 18%)
25.2M25.20 mi0.35 mi1103+231039+211039+21567(Top 2%)527(Top 3%)527(Top 9%)
Finish26.22 mi1.02 mi1050+53988+51988+51693(Top 2%)653(Top 4%)653(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1799

Males

1710

M18-39

1710

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

2055

Males

1958

M18-39

1958

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1799

Males

1710

M18-39

1710

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1326

Males

1255

M18-39

1255

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1949

Males

1858

M18-39

1858

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1227

Males

1160

M18-39

1160

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1256

Males

1185

M18-39

1185

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

862

Males

814

M18-39

814

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

299

Males

280

M18-39

280

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

631

Males

590

M18-39

590

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

439

Males

413

M18-39

413

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1065

Males

1001

M18-39

1001

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1095

Males

1024

M18-39

1024

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

567

Males

527

M18-39

527

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2stories
+22ft-21ft

Overall

693

Males

653

M18-39

653

Passing Analysis

Category:
Athletes Passed
1130
Passed By
236
Net Change
+894
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1944
5K → 10K90149-59#1944#2003
10K → 15K11520+95#2003#1908
15K → 20K1782+176#1908#1732
20K → Half219-17#1732#1749
Half → 25K1171+116#1749#1633
25K → 30K12316+107#1633#1526
30K → 20M964+92#1526#1434
20M → 21M1140+114#1434#1320
21M → 35K540+54#1320#1266
35K → 23M1060+106#1266#1160
23M → 24M3412+22#1160#1138
24M → 40K2210+12#1138#1126
40K → 25.2M241+23#1126#1103
25.2M → Finish552+53#1103#1050
TOTALS1130236+894
📊

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