Boston Marathon logo
BOSTON MARATHON 2023

Samuel Jurek

Bib: 2811•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 19%
Division (M18-39)
#0 / 5285
Top 40%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
19:08
Rank: #1042
Start → 5K
19:08 | 6:10/mi
10K· 6.21 mi
38:44
Rank: #1317 (-275)
5K → 10K
19:36 | 6:19/mi
15K· 9.32 mi
58:50
Rank: #1640 (-323)
10K → 15K
20:06 | 6:28/mi
20K· 12.43 mi
1:19:14
Rank: #1832 (-192)
15K → 20K
20:24 | 6:34/mi
Half· 13.11 mi
1:23:39
Rank: #1858 (-26)
20K → Half
4:25 | 6:28/mi
25K· 15.53 mi
1:39:39
Rank: #1960 (-102)
Half → 25K
16:00 | 6:36/mi
30K· 18.64 mi
2:00:52
Rank: #2140 (-180)
25K → 30K
21:13 | 6:50/mi
20M
2:11:26
Rank: #2482 (-342)
30K → 20M
10:34 | 7:47/mi
21M
2:18:43
Rank: #2517 (-35)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:23:50
Rank: #2540 (-23)
21M → 35K
5:07 | 6:50/mi
23M
2:32:36
Rank: #2556 (-16)
35K → 23M
8:46 | 7:00/mi
24M
2:39:54
Rank: #2720 (-164)
23M → 24M
7:18 | 7:18/mi
40K· 24.85 mi
2:46:03
Rank: #2785 (-65)
24M → 40K
6:09 | 7:12/mi
25.2M
2:48:47
Rank: #2837 (-52)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
2:56:22
Rank: #3025 (-188)
25.2M → Finish
7:35 | 7:26/mi

Course Map & Elevation

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:39
Pace6:23 /mi
2nd Half
Distance13.11 mi
Time1:32:43
Pace7:04 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:44:1019:086:1019:08
6:10
-
10K
6.21 mi11:03:4638:446:1419:36
6:19
+0:09
15K
9.32 mi11:23:5258:506:1920:06
6:28
+0:09
20K
12.43 mi11:44:161:19:146:2320:24
6:34
+0:06
Half
13.11 mi11:48:411:23:396:234:25
6:28
-0:06
25K
15.53 mi12:04:411:39:396:2516:00
6:36
+0:08
30K
18.64 mi12:25:542:00:526:2921:13
6:50
+0:14
20M
20.00 mi12:36:282:11:266:3410:34
7:47
+0:57
21M
21.00 mi12:43:452:18:436:367:17
7:17
-0:30
35K
21.75 mi12:48:522:23:506:375:07
6:50
-0:27
23M
23.00 mi12:57:382:32:366:388:46
7:00
+0:10
24M
24.00 mi13:04:562:39:546:407:18
7:18
+0:18
40K
24.85 mi13:11:052:46:036:416:09
7:12
-0:06
25.2M
25.20 mi13:13:492:48:476:422:44
7:56
+0:44
Finish
26.22 mi13:21:242:56:226:447:35
7:26
-0:30

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

6:10 /mi

Average Pace

6:44 /mi

Slowest Pace

7:56 /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

1:23:39

47% of race

Time at Steady Pace

51:06

29% of race

Time at Slower Pace

41:37

24% of race

Average Pace: 6:44 /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 mi10:44:1019:086:1019:08
6:10
#1042
10K
6.21 mi11:03:4638:446:1419:36
6:19
#1317
15K
9.32 mi11:23:5258:506:1920:06
6:28
#1640
20K
12.43 mi11:44:161:19:146:2320:24
6:34
#1832
Half
13.11 mi11:48:411:23:396:234:25
6:28
#1858
25K
15.53 mi12:04:411:39:396:2516:00
6:36
#1960
30K
18.64 mi12:25:542:00:526:2921:13
6:50
#2140
20M
20.00 mi12:36:282:11:266:3410:34
7:47
#2482
21M
21.00 mi12:43:452:18:436:367:17
7:17
#2517
35K
21.75 mi12:48:522:23:506:375:07
6:50
#2540
23M
23.00 mi12:57:382:32:366:388:46
7:00
#2556
24M
24.00 mi13:04:562:39:546:407:18
7:18
#2720
40K
24.85 mi13:11:052:46:036:416:09
7:12
#2785
25.2M
25.20 mi13:13:492:48:476:422:44
7:56
#2837
Finish
26.22 mi13:21:242:56:226:447:35
7:26
#3025
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi10429849842459(Top 9%)2359(Top 16%)2359(Top 45%)
10K6.21 mi3.10 mi1317-2751251-2671251-2671812(Top 7%)1733(Top 11%)1733(Top 33%)
15K9.32 mi3.11 mi1640-3231567-3161567-3162459(Top 9%)2359(Top 16%)2359(Top 45%)
20K12.43 mi3.11 mi1832-1921753-1861753-1862648(Top 10%)2532(Top 17%)2532(Top 48%)
Half13.11 mi0.68 mi1858-261779-261779-262643(Top 10%)2537(Top 17%)2537(Top 48%)
25K15.53 mi2.42 mi1960-1021878-991878-992712(Top 10%)2596(Top 17%)2596(Top 49%)
30K18.64 mi3.11 mi2140-1802053-1752053-1753173(Top 12%)2989(Top 20%)2989(Top 57%)
20M20.00 mi1.36 mi2482-3422377-3242377-3248627(Top 32%)6960(Top 46%)6960(Top 132%)
21M21.00 mi1.00 mi2517-352410-332410-333503(Top 13%)3254(Top 21%)3254(Top 62%)
35K21.75 mi0.75 mi2540-232431-212431-214382(Top 16%)4000(Top 26%)4000(Top 76%)
23M23.00 mi1.25 mi2556-162444-132444-133782(Top 14%)3489(Top 23%)3489(Top 66%)
24M24.00 mi1.00 mi2720-1642593-1492593-1496322(Top 24%)5285(Top 35%)5285(Top 100%)
40K24.85 mi0.85 mi2785-652647-542647-544804(Top 18%)4204(Top 28%)4204(Top 80%)
25.2M25.20 mi0.35 mi2837-522696-492696-495959(Top 22%)4890(Top 32%)4890(Top 93%)
Finish26.22 mi1.02 mi3025-1882865-1692865-1698032(Top 30%)6168(Top 41%)6168(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2459

Males

2359

M18-39

2359

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1812

Males

1733

M18-39

1733

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2459

Males

2359

M18-39

2359

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2648

Males

2532

M18-39

2532

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2643

Males

2537

M18-39

2537

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2712

Males

2596

M18-39

2596

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3173

Males

2989

M18-39

2989

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8627

Males

6960

M18-39

6960

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3503

Males

3254

M18-39

3254

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4382

Males

4000

M18-39

4000

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3782

Males

3489

M18-39

3489

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6322

Males

5285

M18-39

5285

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4804

Males

4204

M18-39

4204

40K→25.2M

24.9 - 25.2 mi

Top 22%
×1story
+13ft-16ft

Overall

5959

Males

4890

M18-39

4890

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8032

Males

6168

M18-39

6168

Passing Analysis

Category:
Athletes Passed
194
Passed By
2177
Net Change
-1983
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1042
5K → 10K3278-275#1042#1317
10K → 15K6329-323#1317#1640
15K → 20K12204-192#1640#1832
20K → Half430-26#1832#1858
Half → 25K14116-102#1858#1960
25K → 30K28208-180#1960#2140
30K → 20M4346-342#2140#2482
20M → 21M2863-35#2482#2517
21M → 35K1235-23#2517#2540
35K → 23M4157-16#2540#2556
23M → 24M8172-164#2556#2720
24M → 40K2186-65#2720#2785
40K → 25.2M658-52#2785#2837
25.2M → Finish7195-188#2837#3025
TOTALS1942177-1983
📊

Passing Visuals

Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing