Boston Marathon logo
BOSTON MARATHON 2023

Vasily Samoylov

Bib: 2957•M

CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 8%
Gender (Male)
#0 / 15176
Top 14%
Division (M18-39)
#0 / 5285
Top 31%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:42
Rank: #723
Start → 5K
18:42 | 6:01/mi
10K· 6.21 mi
36:42
Rank: #568 (+155)
5K → 10K
18:00 | 5:48/mi
15K· 9.32 mi
55:07
Rank: #566 (+2)
10K → 15K
18:25 | 5:56/mi
20K· 12.43 mi
1:14:16
Rank: #630 (-64)
15K → 20K
19:09 | 6:10/mi
Half· 13.11 mi
1:18:31
Rank: #648 (-18)
20K → Half
4:15 | 6:14/mi
25K· 15.53 mi
1:34:06
Rank: #752 (-104)
Half → 25K
15:35 | 6:26/mi
30K· 18.64 mi
1:54:58
Rank: #932 (-180)
25K → 30K
20:52 | 6:43/mi
20M
2:04:49
Rank: #1096 (-164)
30K → 20M
9:51 | 7:15/mi
21M
2:12:59
Rank: #1320 (-224)
20M → 21M
8:10 | 8:10/mi
35K· 21.75 mi
2:18:22
Rank: #1429 (-109)
21M → 35K
5:23 | 7:12/mi
23M
2:27:53
Rank: #1642 (-213)
35K → 23M
9:31 | 7:36/mi
24M
2:35:23
Rank: #1811 (-169)
23M → 24M
7:30 | 7:30/mi
40K· 24.85 mi
2:41:46
Rank: #1929 (-118)
24M → 40K
6:23 | 7:28/mi
25.2M
2:44:36
Rank: #1992 (-63)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
2:52:11
Rank: #2136 (-144)
25.2M → Finish
7:35 | 7:26/mi

The Course

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
Time1:18:31
Pace5:59 /mi
2nd Half
Distance13.11 mi
Time1:33:40
Pace7:09 /mi
📊Positive Split: 19.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:2418:426:0118:42
6:01
-
10K
6.21 mi10:37:2436:425:5418:00
5:48
-0:13
15K
9.32 mi10:55:4955:075:5518:25
5:56
+0:08
20K
12.43 mi11:14:581:14:165:5919:09
6:10
+0:14
Half
13.11 mi11:19:131:18:315:594:15
6:14
+0:04
25K
15.53 mi11:34:481:34:066:0315:35
6:26
+0:12
30K
18.64 mi11:55:401:54:586:1020:52
6:43
+0:17
20M
20.00 mi12:05:312:04:496:149:51
7:15
+0:32
21M
21.00 mi12:13:412:12:596:208:10
8:10
+0:55
35K
21.75 mi12:19:042:18:226:225:23
7:12
-0:58
23M
23.00 mi12:28:352:27:536:269:31
7:36
+0:24
24M
24.00 mi12:36:052:35:236:287:30
7:30
-0:06
40K
24.85 mi12:42:282:41:466:316:23
7:28
-0:02
25.2M
25.20 mi12:45:182:44:366:322:50
8:13
+0:45
Finish
26.22 mi12:52:532:52:116:347:35
7:26
-0:47

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

5:48 /mi

Average Pace

6:34 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:58

67% of race

Time at Steady Pace

36:42

21% of race

Time at Slower Pace

20:31

12% of race

Average Pace: 6:34 /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 mi10:19:2418:426:0118:42
6:01
#723
10K
6.21 mi10:37:2436:425:5418:00
5:48
#568
15K
9.32 mi10:55:4955:075:5518:25
5:56
#566
20K
12.43 mi11:14:581:14:165:5919:09
6:10
#630
Half
13.11 mi11:19:131:18:315:594:15
6:14
#648
25K
15.53 mi11:34:481:34:066:0315:35
6:26
#752
30K
18.64 mi11:55:401:54:586:1020:52
6:43
#932
20M
20.00 mi12:05:312:04:496:149:51
7:15
#1096
21M
21.00 mi12:13:412:12:596:208:10
8:10
#1320
35K
21.75 mi12:19:042:18:226:225:23
7:12
#1429
23M
23.00 mi12:28:352:27:536:269:31
7:36
#1642
24M
24.00 mi12:36:052:35:236:287:30
7:30
#1811
40K
24.85 mi12:42:282:41:466:316:23
7:28
#1929
25.2M
25.20 mi12:45:182:44:366:322:50
8:13
#1992
Finish
26.22 mi12:52:532:52:116:347:35
7:26
#2136
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi723677677570(Top 2%)527(Top 3%)527(Top 10%)
10K6.21 mi3.10 mi568+155526+151526+151422(Top 2%)387(Top 3%)387(Top 7%)
15K9.32 mi3.11 mi566+2523+3523+3570(Top 2%)527(Top 3%)527(Top 10%)
20K12.43 mi3.11 mi630-64587-64587-64957(Top 4%)909(Top 6%)909(Top 17%)
Half13.11 mi0.68 mi648-18605-18605-181523(Top 6%)1459(Top 10%)1459(Top 28%)
25K15.53 mi2.42 mi752-104708-103708-1031851(Top 7%)1774(Top 12%)1774(Top 34%)
30K18.64 mi3.11 mi932-180884-176884-1762477(Top 9%)2356(Top 16%)2356(Top 45%)
20M20.00 mi1.36 mi1096-1641044-1601044-1605331(Top 20%)4793(Top 32%)4793(Top 91%)
21M21.00 mi1.00 mi1320-2241260-2161260-2168365(Top 31%)6671(Top 44%)6671(Top 126%)
35K21.75 mi0.75 mi1429-1091365-1051365-1056439(Top 24%)5519(Top 36%)5519(Top 104%)
23M23.00 mi1.25 mi1642-2131571-2061571-2067043(Top 26%)5838(Top 38%)5838(Top 110%)
24M24.00 mi1.00 mi1811-1691732-1611732-1617654(Top 29%)6092(Top 40%)6092(Top 115%)
40K24.85 mi0.85 mi1929-1181845-1131845-1136437(Top 24%)5283(Top 35%)5283(Top 100%)
25.2M25.20 mi0.35 mi1992-631908-631908-637659(Top 29%)5935(Top 39%)5935(Top 112%)
Finish26.22 mi1.02 mi2136-1442049-1412049-1418028(Top 30%)6164(Top 41%)6164(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

570

Males

527

M18-39

527

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

422

Males

387

M18-39

387

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

570

Males

527

M18-39

527

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

957

Males

909

M18-39

909

20K→Half

12.4 - 13.1 mi

Top 6%
×2stories
+19ft-37ft

Overall

1523

Males

1459

M18-39

1459

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1851

Males

1774

M18-39

1774

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2477

Males

2356

M18-39

2356

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5331

Males

4793

M18-39

4793

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8365

Males

6671

M18-39

6671

21M→35K

21.0 - 21.8 mi

Top 24%
×7stories
+17ft-86ft

Overall

6439

Males

5519

M18-39

5519

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7043

Males

5838

M18-39

5838

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7654

Males

6092

M18-39

6092

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6437

Males

5283

M18-39

5283

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7659

Males

5935

M18-39

5935

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8028

Males

6164

M18-39

6164

Passing Analysis

Category:
Athletes Passed
209
Passed By
1622
Net Change
-1413
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#723
5K → 10K1572+155#723#568
10K → 15K2018+2#568#566
15K → 20K468-64#566#630
20K → Half119-18#630#648
Half → 25K4108-104#648#752
25K → 30K3183-180#752#932
30K → 20M1165-164#932#1096
20M → 21M3227-224#1096#1320
21M → 35K1110-109#1320#1429
35K → 23M2215-213#1429#1642
23M → 24M2171-169#1642#1811
24M → 40K4122-118#1811#1929
40K → 25.2M265-63#1929#1992
25.2M → Finish5149-144#1992#2136
TOTALS2091622-1413
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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