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BOSTON MARATHON 2026

Jacob Sherf

Bib: 27152•M

MA

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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Age Group (M18-39)
#0 / 5723
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
28:14
3.11 mi
Rank: #23010
Start → 5K
28:14 | 9:06/mi
10K
56:14
6.21 mi
Rank: #22955 (+55)
5K → 10K
28:00 | 9:01/mi
15K
1:23:47
9.32 mi
Rank: #22678 (+277)
10K → 15K
27:33 | 8:53/mi
20K
1:51:21
12.43 mi
Rank: #22301 (+377)
15K → 20K
27:34 | 8:53/mi
HALF
1:57:18
13.11 mi
Rank: #22247 (+54)
20K → HALF
5:57 | 8:44/mi
25K
2:18:38
15.53 mi
Rank: #21908 (+339)
HALF → 25K
21:20 | 8:48/mi
30K
2:47:16
18.64 mi
Rank: #21650 (+258)
25K → 30K
28:38 | 9:13/mi
20M
3:00:03
20.00 mi
Rank: #21554 (+96)
30K → 20M
12:47 | 9:25/mi
21M
3:09:47
21.00 mi
Rank: #21450 (+104)
20M → 21M
9:44 | 9:44/mi
35K
3:16:38
21.75 mi
Rank: #21422 (+28)
21M → 35K
6:51 | 9:10/mi
23M
3:28:14
23.00 mi
Rank: #21327 (+95)
35K → 23M
11:36 | 9:17/mi
24M
3:37:29
24.00 mi
Rank: #21291 (+36)
23M → 24M
9:15 | 9:15/mi
40K
3:45:25
24.85 mi
Rank: #21237 (+54)
24M → 40K
7:56 | 9:17/mi
25.2M
3:48:46
25.20 mi
Rank: #21200 (+37)
40K → 25.2M
3:21 | 9:43/mi
FINISH
3:57:35
26.22 mi
Rank: #21111 (+89)
25.2M → FINISH
8:49 | 8:40/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:57:18
Pace8:57 /mi
2nd Half
Distance13.11 mi
Time2:00:17
Pace9:11 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:0228:149:0628:14
9:06
-
10K
6.21 mi12:21:0256:149:0328:00
9:01
-0:05
15K
9.32 mi12:48:351:23:479:0027:33
8:53
-0:08
20K
12.43 mi13:16:091:51:218:5827:34
8:53
0:00
HALF
13.11 mi13:22:061:57:188:575:57
8:44
-0:09
25K
15.53 mi13:43:262:18:388:5621:20
8:48
+0:04
30K
18.64 mi14:12:042:47:168:5928:38
9:13
+0:25
20M
20.00 mi14:24:513:00:039:0112:47
9:25
+0:12
21M
21.00 mi14:34:353:09:479:039:44
9:44
+0:19
35K
21.75 mi14:41:263:16:389:036:51
9:10
-0:34
23M
23.00 mi14:53:023:28:149:0411:36
9:17
+0:07
24M
24.00 mi15:02:173:37:299:049:15
9:15
-0:02
40K
24.85 mi15:10:133:45:259:057:56
9:17
+0:02
25.2M
25.20 mi15:13:343:48:469:053:21
9:43
+0:26
FINISH
26.22 mi15:22:233:57:359:058:49
8:40
-1:03

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:40 /mi

Average Pace

9:04 /mi

Slowest Pace

9:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

3:44:30

94% of race

Time at Steady Pace

13:05

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:04 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:53:0228:149:0628:14
9:06
#23010
10K
6.21 mi12:21:0256:149:0328:00
9:01
#22955
15K
9.32 mi12:48:351:23:479:0027:33
8:53
#22678
20K
12.43 mi13:16:091:51:218:5827:34
8:53
#22301
HALF
13.11 mi13:22:061:57:188:575:57
8:44
#22247
25K
15.53 mi13:43:262:18:388:5621:20
8:48
#21908
30K
18.64 mi14:12:042:47:168:5928:38
9:13
#21650
20M
20.00 mi14:24:513:00:039:0112:47
9:25
#21554
21M
21.00 mi14:34:353:09:479:039:44
9:44
#21450
35K
21.75 mi14:41:263:16:389:036:51
9:10
#21422
23M
23.00 mi14:53:023:28:149:0411:36
9:17
#21327
24M
24.00 mi15:02:173:37:299:049:15
9:15
#21291
40K
24.85 mi15:10:133:45:259:057:56
9:17
#21237
25.2M
25.20 mi15:13:343:48:469:053:21
9:43
#21200
FINISH
26.22 mi15:22:233:57:359:058:49
8:40
#21111
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23010137351373522047(Top 76%)13289(Top 81%)13289(Top 232%)
10K6.21 mi3.10 mi22955+5513721+1413721+1422881(Top 79%)13690(Top 84%)13690(Top 239%)
15K9.32 mi3.11 mi22678+27713588+13313588+13322047(Top 76%)13289(Top 81%)13289(Top 232%)
20K12.43 mi3.11 mi22301+37713404+18413404+18421340(Top 74%)12936(Top 79%)12936(Top 226%)
HALF13.11 mi0.68 mi22247+5413375+2913375+2921431(Top 74%)13000(Top 80%)13000(Top 227%)
25K15.53 mi2.42 mi21908+33913202+17313202+17320228(Top 70%)12379(Top 76%)12379(Top 216%)
30K18.64 mi3.11 mi21650+25813060+14213060+14220581(Top 71%)12458(Top 76%)12458(Top 218%)
20M20.00 mi1.36 mi21554+9612988+7212988+7220718(Top 71%)12438(Top 76%)12438(Top 217%)
21M21.00 mi1.00 mi21450+10412931+5712931+5719497(Top 67%)11848(Top 73%)11848(Top 207%)
35K21.75 mi0.75 mi21422+2812911+2012911+2020627(Top 71%)12298(Top 75%)12298(Top 215%)
23M23.00 mi1.25 mi21327+9512861+5012861+5019699(Top 68%)11799(Top 72%)11799(Top 206%)
24M24.00 mi1.00 mi21291+3612828+3312828+3320452(Top 70%)12110(Top 74%)12110(Top 212%)
40K24.85 mi0.85 mi21237+5412788+4012788+4019584(Top 67%)11647(Top 71%)11647(Top 204%)
25.2M25.20 mi0.35 mi21200+3712766+2212766+2218254(Top 63%)11024(Top 67%)11024(Top 193%)
FINISH26.22 mi1.02 mi21111+8912712+5412712+5418916(Top 65%)11336(Top 69%)11336(Top 198%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21
+97ft-345ft

Overall

22047

Males

13289

M18-39

13289

5K→10K

3.1 - 6.2 mi

Top 79%
×5
+79ft-138ft

Overall

22881

Males

13690

M18-39

13690

10K→15K

6.2 - 9.3 mi

Top 76%
×3
+67ft-78ft

Overall

22047

Males

13289

M18-39

13289

15K→20K

9.3 - 12.4 mi

Top 74%
×5
+106ft-86ft

Overall

21340

Males

12936

M18-39

12936

20K→HALF

12.4 - 13.1 mi

Top 74%
×2
+19ft-37ft

Overall

21431

Males

13000

M18-39

13000

HALF→25K

13.1 - 15.5 mi

Top 70%
×4
+66ft-88ft

Overall

20228

Males

12379

M18-39

12379

25K→30K

15.5 - 18.6 mi

Top 71%
×9
+181ft-148ft

Overall

20581

Males

12458

M18-39

12458

30K→20M

18.6 - 20.0 mi

Top 71%
×5
+64ft-50ft

Overall

20718

Males

12438

M18-39

12438

20M→21M

20.0 - 21.0 mi

Top 67%
×8
+106ft-24ft

Overall

19497

Males

11848

M18-39

11848

21M→35K

21.0 - 21.8 mi

Top 71%
×7
+17ft-86ft

Overall

20627

Males

12298

M18-39

12298

35K→23M

21.8 - 23.0 mi

Top 68%
×5
+23ft-63ft

Overall

19699

Males

11799

M18-39

11799

23M→24M

23.0 - 24.0 mi

Top 70%
×6
+12ft-82ft

Overall

20452

Males

12110

M18-39

12110

24M→40K

24.0 - 24.9 mi

Top 67%
×1
+6ft-20ft

Overall

19584

Males

11647

M18-39

11647

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1
+13ft-16ft

Overall

18254

Males

11024

M18-39

11024

25.2M→FINISH

25.2 - 26.2 mi

Top 65%
×2
+22ft-21ft

Overall

18916

Males

11336

M18-39

11336

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
2458*
Passed By
559
Net Change
+1899
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23010
5K → 10K255*200+55#23010#22955
10K → 15K334*57+277#22955#22678
15K → 20K403*26+377#22678#22301
20K → HALF639+54#22301#22247
HALF → 25K352*13+339#22247#21908
25K → 30K305*47+258#21908#21650
30K → 20M13236+96#21650#21554
20M → 21M13834+104#21554#21450
21M → 35K5931+28#21450#21422
35K → 23M11621+95#21422#21327
23M → 24M7539+36#21327#21291
24M → 40K7521+54#21291#21237
40K → 25.2M4811+37#21237#21200
25.2M → FINISH10314+89#21200#21111
TOTALS2458*559+1899

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
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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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing