Boston Marathon logo
BOSTON MARATHON 2023

Aliaksandr Leuchanka

Bib: 378•M

NH

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 0.9%
Gender (Male)
#0 / 15176
Top 1%
Division (M18-39)
#0 / 5285
Top 3%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:41
Rank: #261
Start → 5K
17:41 | 5:42/mi
10K· 6.21 mi
35:46
Rank: #355 (-94)
5K → 10K
18:05 | 5:49/mi
15K· 9.32 mi
53:44
Rank: #353 (+2)
10K → 15K
17:58 | 5:47/mi
20K· 12.43 mi
1:11:50
Rank: #335 (+18)
15K → 20K
18:06 | 5:50/mi
Half· 13.11 mi
1:15:43
Rank: #328 (+7)
20K → Half
3:53 | 5:42/mi
25K· 15.53 mi
1:29:52
Rank: #328
Half → 25K
14:09 | 5:50/mi
30K· 18.64 mi
1:48:15
Rank: #314 (+14)
25K → 30K
18:23 | 5:55/mi
20M
1:56:17
Rank: #310 (+4)
30K → 20M
8:02 | 5:55/mi
21M
2:02:33
Rank: #302 (+8)
20M → 21M
6:16 | 6:16/mi
35K· 21.75 mi
2:06:49
Rank: #296 (+6)
21M → 35K
4:16 | 5:42/mi
23M
2:14:09
Rank: #278 (+18)
35K → 23M
7:20 | 5:51/mi
24M
2:19:48
Rank: #257 (+21)
23M → 24M
5:39 | 5:39/mi
40K· 24.85 mi
2:24:45
Rank: #243 (+14)
24M → 40K
4:57 | 5:47/mi
25.2M
2:26:56
Rank: #239 (+4)
40K → 25.2M
2:11 | 6:20/mi
Finish· 26.22 mi
2:32:41
Rank: #231 (+8)
25.2M → Finish
5:45 | 5:39/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
Time1:15:43
Pace5:47 /mi
2nd Half
Distance13.11 mi
Time1:16:58
Pace5:52 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:17:5117:415:4217:41
5:42
-
10K
6.21 mi10:35:5635:465:4518:05
5:49
+0:07
15K
9.32 mi10:53:5453:445:4617:58
5:47
-0:02
20K
12.43 mi11:12:001:11:505:4718:06
5:50
+0:03
Half
13.11 mi11:15:531:15:435:473:53
5:42
-0:08
25K
15.53 mi11:30:021:29:525:4714:09
5:50
+0:08
30K
18.64 mi11:48:251:48:155:4818:23
5:55
+0:05
20M
20.00 mi11:56:271:56:175:498:02
5:55
0:00
21M
21.00 mi12:02:432:02:335:506:16
6:16
+0:21
35K
21.75 mi12:06:592:06:495:504:16
5:42
-0:34
23M
23.00 mi12:14:192:14:095:507:20
5:51
+0:09
24M
24.00 mi12:19:582:19:485:505:39
5:39
-0:12
40K
24.85 mi12:24:552:24:455:494:57
5:47
+0:08
25.2M
25.20 mi12:27:062:26:565:502:11
6:20
+0:33
Finish
26.22 mi12:32:512:32:415:505:45
5:39
-0:41

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

5:39 /mi

Average Pace

5:50 /mi

Slowest Pace

6:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:14

94% of race

Time at Steady Pace

8:27

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:49 /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 mi10:17:5117:415:4217:41
5:42
#261
10K
6.21 mi10:35:5635:465:4518:05
5:49
#355
15K
9.32 mi10:53:5453:445:4617:58
5:47
#353
20K
12.43 mi11:12:001:11:505:4718:06
5:50
#335
Half
13.11 mi11:15:531:15:435:473:53
5:42
#328
25K
15.53 mi11:30:021:29:525:4714:09
5:50
#328
30K
18.64 mi11:48:251:48:155:4818:23
5:55
#314
20M
20.00 mi11:56:271:56:175:498:02
5:55
#310
21M
21.00 mi12:02:432:02:335:506:16
6:16
#302
35K
21.75 mi12:06:592:06:495:504:16
5:42
#296
23M
23.00 mi12:14:192:14:095:507:20
5:51
#278
24M
24.00 mi12:19:582:19:485:505:39
5:39
#257
40K
24.85 mi12:24:552:24:455:494:57
5:47
#243
25.2M
25.20 mi12:27:062:26:565:502:11
6:20
#239
Finish
26.22 mi12:32:512:32:415:505:45
5:39
#231
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi261261261351(Top 1%)318(Top 2%)318(Top 6%)
10K6.21 mi3.10 mi355-94321-60321-60453(Top 2%)418(Top 3%)418(Top 8%)
15K9.32 mi3.11 mi353+2320+1320+1351(Top 1%)318(Top 2%)318(Top 6%)
20K12.43 mi3.11 mi335+18302+18302+18335(Top 1%)303(Top 2%)303(Top 6%)
Half13.11 mi0.68 mi328+7296+6296+6266(Top 1.0%)244(Top 2%)244(Top 5%)
25K15.53 mi2.42 mi328296296321(Top 1%)293(Top 2%)293(Top 6%)
30K18.64 mi3.11 mi314+14282+14282+14278(Top 1%)254(Top 2%)254(Top 5%)
20M20.00 mi1.36 mi310+4279+3279+3254(Top 1.0%)230(Top 2%)230(Top 4%)
21M21.00 mi1.00 mi302+8271+8271+8303(Top 1%)277(Top 2%)277(Top 5%)
35K21.75 mi0.75 mi296+6265+6265+6228(Top 0.9%)205(Top 1%)205(Top 4%)
23M23.00 mi1.25 mi278+18250+15250+15176(Top 0.7%)153(Top 1%)153(Top 3%)
24M24.00 mi1.00 mi257+21231+19231+19145(Top 0.5%)127(Top 0.8%)127(Top 2%)
40K24.85 mi0.85 mi243+14218+13218+13135(Top 0.5%)121(Top 0.8%)121(Top 2%)
25.2M25.20 mi0.35 mi239+4214+4214+4247(Top 0.9%)227(Top 1%)227(Top 4%)
Finish26.22 mi1.02 mi231+8206+8206+8180(Top 0.7%)164(Top 1%)164(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

351

Males

318

M18-39

318

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

453

Males

418

M18-39

418

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

351

Males

318

M18-39

318

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

335

Males

303

M18-39

303

20K→Half

12.4 - 13.1 mi

Top 1.0%
×2stories
+19ft-37ft

Overall

266

Males

244

M18-39

244

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

321

Males

293

M18-39

293

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

278

Males

254

M18-39

254

30K→20M

18.6 - 20.0 mi

Top 1.0%
×5stories
+64ft-50ft

Overall

254

Males

230

M18-39

230

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

303

Males

277

M18-39

277

21M→35K

21.0 - 21.8 mi

Top 0.9%
×7stories
+17ft-86ft

Overall

228

Males

205

M18-39

205

35K→23M

21.8 - 23.0 mi

Top 0.7%
×5stories
+23ft-63ft

Overall

176

Males

153

M18-39

153

23M→24M

23.0 - 24.0 mi

Top 0.5%
×6stories
+12ft-82ft

Overall

145

Males

127

M18-39

127

24M→40K

24.0 - 24.9 mi

Top 0.5%
×1story
+6ft-20ft

Overall

135

Males

121

M18-39

121

40K→25.2M

24.9 - 25.2 mi

Top 0.9%
×1story
+13ft-16ft

Overall

247

Males

227

M18-39

227

25.2M→Finish

25.2 - 26.2 mi

Top 0.7%
×2stories
+22ft-21ft

Overall

180

Males

164

M18-39

164

Passing Analysis

Category:
Athletes Passed
163
Passed By
133
Net Change
+30
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#261
5K → 10K195-94#261#355
10K → 15K1513+2#355#353
15K → 20K202+18#353#335
20K → Half70+7#335#328
Half → 25K880#328#328
25K → 30K228+14#328#314
30K → 20M73+4#314#310
20M → 21M80+8#310#302
21M → 35K71+6#302#296
35K → 23M202+18#296#278
23M → 24M210+21#278#257
24M → 40K140+14#257#243
40K → 25.2M51+4#243#239
25.2M → Finish80+8#239#231
TOTALS163133+30
📊

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