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BOSTON MARATHON 2025

Jacob Blackmon

Bib: 3732•M

IA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 2%
Gender (Male)
#0 / 16105
Top 3%
Division (M18-39)
#0 / 5642
Top 8%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:40
Rank: #2613
Start → 5K
19:40 | 6:20/mi
10K· 6.21 mi
38:53
Rank: #2163 (+450)
5K → 10K
19:13 | 6:11/mi
15K· 9.32 mi
57:16
Rank: #1582 (+581)
10K → 15K
18:23 | 5:55/mi
20K· 12.43 mi
1:15:49
Rank: #1325 (+257)
15K → 20K
18:33 | 5:58/mi
Half· 13.11 mi
1:19:47
Rank: #1268 (+57)
20K → Half
3:58 | 5:49/mi
25K· 15.53 mi
1:34:08
Rank: #1125 (+143)
Half → 25K
14:21 | 5:55/mi
30K· 18.64 mi
1:52:18
Rank: #885 (+240)
25K → 30K
18:10 | 5:51/mi
20M
2:00:14
Rank: #796 (+89)
30K → 20M
7:56 | 5:50/mi
21M
2:06:18
Rank: #734 (+62)
20M → 21M
6:04 | 6:04/mi
35K· 21.75 mi
2:10:30
Rank: #687 (+47)
21M → 35K
4:12 | 5:37/mi
23M
2:17:45
Rank: #624 (+63)
35K → 23M
7:15 | 5:47/mi
24M
2:23:28
Rank: #596 (+28)
23M → 24M
5:43 | 5:43/mi
40K· 24.85 mi
2:28:30
Rank: #568 (+28)
24M → 40K
5:02 | 5:53/mi
25.2M
2:30:42
Rank: #557 (+11)
40K → 25.2M
2:12 | 6:23/mi
Finish· 26.22 mi
2:36:29
Rank: #532 (+25)
25.2M → Finish
5:47 | 5:41/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:19:47
Pace6:05 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:16:42
Pace5:51 /mi
📊Negative Split: 3.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3119:406:2019:40
6:20
-
10K
6.21 mi10:41:4438:536:1519:13
6:11
-0:09
15K
9.32 mi11:00:0757:166:0918:23
5:55
-0:16
20K
12.43 mi11:18:401:15:496:0618:33
5:58
+0:03
Half
13.11 mi11:22:381:19:476:053:58
5:49
-0:09
25K
15.53 mi11:36:591:34:086:0414:21
5:55
+0:06
30K
18.64 mi11:55:091:52:186:0118:10
5:51
-0:04
20M
20.00 mi12:03:052:00:146:017:56
5:50
-0:01
21M
21.00 mi12:09:092:06:186:016:04
6:04
+0:14
35K
21.75 mi12:13:212:10:306:004:12
5:37
-0:27
23M
23.00 mi12:20:362:17:455:597:15
5:47
+0:10
24M
24.00 mi12:26:192:23:285:595:43
5:43
-0:04
40K
24.85 mi12:31:212:28:305:585:02
5:53
+0:10
25.2M
25.20 mi12:33:332:30:425:592:12
6:23
+0:30
Finish
26.22 mi12:39:202:36:295:585:47
5:41
-0:42

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

5:37 /mi

Average Pace

5:58 /mi

Slowest Pace

6:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:24

74% of race

Time at Steady Pace

41:05

26% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:58 /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 mi10:22:3119:406:2019:40
6:20
#2613
10K
6.21 mi10:41:4438:536:1519:13
6:11
#2163
15K
9.32 mi11:00:0757:166:0918:23
5:55
#1582
20K
12.43 mi11:18:401:15:496:0618:33
5:58
#1325
Half
13.11 mi11:22:381:19:476:053:58
5:49
#1268
25K
15.53 mi11:36:591:34:086:0414:21
5:55
#1125
30K
18.64 mi11:55:091:52:186:0118:10
5:51
#885
20M
20.00 mi12:03:052:00:146:017:56
5:50
#796
21M
21.00 mi12:09:092:06:186:016:04
6:04
#734
35K
21.75 mi12:13:212:10:306:004:12
5:37
#687
23M
23.00 mi12:20:362:17:455:597:15
5:47
#624
24M
24.00 mi12:26:192:23:285:595:43
5:43
#596
40K
24.85 mi12:31:212:28:305:585:02
5:53
#568
25.2M
25.20 mi12:33:332:30:425:592:12
6:23
#557
Finish
26.22 mi12:39:202:36:295:585:47
5:41
#532
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi261324882488789(Top 3%)739(Top 5%)739(Top 13%)
10K6.21 mi3.10 mi2163+4502064+4242064+4241819(Top 6%)1727(Top 11%)1727(Top 31%)
15K9.32 mi3.11 mi1582+5811505+5591505+559789(Top 3%)739(Top 5%)739(Top 13%)
20K12.43 mi3.11 mi1325+2571256+2491256+249794(Top 3%)745(Top 5%)745(Top 13%)
Half13.11 mi0.68 mi1268+571200+561200+56603(Top 2%)564(Top 4%)564(Top 10%)
25K15.53 mi2.42 mi1125+1431063+1371063+137605(Top 2%)559(Top 3%)559(Top 10%)
30K18.64 mi3.11 mi885+240832+231832+231292(Top 1%)269(Top 2%)269(Top 5%)
20M20.00 mi1.36 mi796+89746+86746+86217(Top 0.8%)199(Top 1%)199(Top 4%)
21M21.00 mi1.00 mi734+62686+60686+60169(Top 0.6%)156(Top 1.0%)156(Top 3%)
35K21.75 mi0.75 mi687+47640+46640+46194(Top 0.7%)177(Top 1%)177(Top 3%)
23M23.00 mi1.25 mi624+63577+63577+63166(Top 0.6%)155(Top 1.0%)155(Top 3%)
24M24.00 mi1.00 mi596+28550+27550+27204(Top 0.7%)186(Top 1%)186(Top 3%)
40K24.85 mi0.85 mi568+28523+27523+27269(Top 0.9%)248(Top 2%)248(Top 4%)
25.2M25.20 mi0.35 mi557+11512+11512+11307(Top 1%)285(Top 2%)285(Top 5%)
Finish26.22 mi1.02 mi532+25492+20492+20326(Top 1%)305(Top 2%)305(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

789

Males

739

M18-39

739

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1819

Males

1727

M18-39

1727

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

789

Males

739

M18-39

739

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

794

Males

745

M18-39

745

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

603

Males

564

M18-39

564

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

605

Males

559

M18-39

559

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

292

Males

269

M18-39

269

30K→20M

18.6 - 20.0 mi

Top 0.8%
×5stories
+64ft-50ft

Overall

217

Males

199

M18-39

199

20M→21M

20.0 - 21.0 mi

Top 0.6%
×8stories
+106ft-24ft

Overall

169

Males

156

M18-39

156

21M→35K

21.0 - 21.8 mi

Top 0.7%
×7stories
+17ft-86ft

Overall

194

Males

177

M18-39

177

35K→23M

21.8 - 23.0 mi

Top 0.6%
×5stories
+23ft-63ft

Overall

166

Males

155

M18-39

155

23M→24M

23.0 - 24.0 mi

Top 0.7%
×6stories
+12ft-82ft

Overall

204

Males

186

M18-39

186

24M→40K

24.0 - 24.9 mi

Top 0.9%
×1story
+6ft-20ft

Overall

269

Males

248

M18-39

248

40K→25.2M

24.9 - 25.2 mi

Top 1%
×1story
+13ft-16ft

Overall

307

Males

285

M18-39

285

25.2M→Finish

25.2 - 26.2 mi

Top 1%
×2stories
+22ft-21ft

Overall

326

Males

305

M18-39

305

Passing Analysis

Category:
Athletes Passed
2091
Passed By
10
Net Change
+2081
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2613
5K → 10K4588+450#2613#2163
10K → 15K5810+581#2163#1582
15K → 20K2570+257#1582#1325
20K → Half570+57#1325#1268
Half → 25K1430+143#1268#1125
25K → 30K2400+240#1125#885
30K → 20M890+89#885#796
20M → 21M620+62#796#734
21M → 35K470+47#734#687
35K → 23M630+63#687#624
23M → 24M291+28#624#596
24M → 40K280+28#596#568
40K → 25.2M110+11#568#557
25.2M → Finish261+25#557#532
TOTALS209110+2081
📊

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