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BOSTON MARATHON 2023

Stefan Liotchev

Bib: 2555•M

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 11%
Gender (Male)
#0 / 15176
Top 18%
Division (M18-39)
#0 / 5285
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:09
Rank: #2205
Start → 5K
20:09 | 6:29/mi
10K· 6.21 mi
40:08
Rank: #2275 (-70)
5K → 10K
19:59 | 6:26/mi
15K· 9.32 mi
1:00:23
Rank: #2435 (-160)
10K → 15K
20:15 | 6:31/mi
20K· 12.43 mi
1:20:45
Rank: #2438 (-3)
15K → 20K
20:22 | 6:33/mi
Half· 13.11 mi
1:25:04
Rank: #2405 (+33)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:41:14
Rank: #2502 (-97)
Half → 25K
16:10 | 6:40/mi
30K· 18.64 mi
2:02:53
Rank: #2706 (-204)
25K → 30K
21:39 | 6:58/mi
20M
2:12:30
Rank: #2778 (-72)
30K → 20M
9:37 | 7:05/mi
21M
2:20:02
Rank: #2864 (-86)
20M → 21M
7:32 | 7:32/mi
35K· 21.75 mi
2:25:05
Rank: #2891 (-27)
21M → 35K
5:03 | 6:45/mi
23M
2:33:49
Rank: #2902 (-11)
35K → 23M
8:44 | 6:59/mi
24M
2:40:44
Rank: #2959 (-57)
23M → 24M
6:55 | 6:55/mi
40K· 24.85 mi
2:46:32
Rank: #2923 (+36)
24M → 40K
5:48 | 6:47/mi
25.2M
2:49:03
Rank: #2905 (+18)
40K → 25.2M
2:31 | 7:18/mi
Finish· 26.22 mi
2:55:30
Rank: #2817 (+88)
25.2M → Finish
6:27 | 6:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:04
Pace6:29 /mi
2nd Half
Distance13.11 mi
Time1:30:26
Pace6:54 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:0320:096:2920:09
6:29
-
10K
6.21 mi10:41:0240:086:2819:59
6:26
-0:03
15K
9.32 mi11:01:171:00:236:2920:15
6:31
+0:05
20K
12.43 mi11:21:391:20:456:3020:22
6:33
+0:02
Half
13.11 mi11:25:581:25:046:294:19
6:20
-0:13
25K
15.53 mi11:42:081:41:146:3116:10
6:40
+0:20
30K
18.64 mi12:03:472:02:536:3621:39
6:58
+0:18
20M
20.00 mi12:13:242:12:306:379:37
7:05
+0:07
21M
21.00 mi12:20:562:20:026:407:32
7:32
+0:27
35K
21.75 mi12:25:592:25:056:405:03
6:45
-0:47
23M
23.00 mi12:34:432:33:496:418:44
6:59
+0:14
24M
24.00 mi12:41:382:40:446:426:55
6:55
-0:04
40K
24.85 mi12:47:262:46:326:425:48
6:47
-0:08
25.2M
25.20 mi12:49:572:49:036:432:31
7:18
+0:31
Finish
26.22 mi12:56:242:55:306:426:27
6:20
-0:58

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

6:20 /mi

Average Pace

6:42 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:05:27

71% of race

Time at Steady Pace

42:31

24% of race

Time at Slower Pace

7:32

4% of race

Average Pace: 6:42 /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 mi10:21:0320:096:2920:09
6:29
#2205
10K
6.21 mi10:41:0240:086:2819:59
6:26
#2275
15K
9.32 mi11:01:171:00:236:2920:15
6:31
#2435
20K
12.43 mi11:21:391:20:456:3020:22
6:33
#2438
Half
13.11 mi11:25:581:25:046:294:19
6:20
#2405
25K
15.53 mi11:42:081:41:146:3116:10
6:40
#2502
30K
18.64 mi12:03:472:02:536:3621:39
6:58
#2706
20M
20.00 mi12:13:242:12:306:379:37
7:05
#2778
21M
21.00 mi12:20:562:20:026:407:32
7:32
#2864
35K
21.75 mi12:25:592:25:056:405:03
6:45
#2891
23M
23.00 mi12:34:432:33:496:418:44
6:59
#2902
24M
24.00 mi12:41:382:40:446:426:55
6:55
#2959
40K
24.85 mi12:47:262:46:326:425:48
6:47
#2923
25.2M
25.20 mi12:49:572:49:036:432:31
7:18
#2905
Finish
26.22 mi12:56:242:55:306:426:27
6:20
#2817
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2205210421042741(Top 10%)2618(Top 17%)2618(Top 50%)
10K6.21 mi3.10 mi2275-702175-712175-712409(Top 9%)2307(Top 15%)2307(Top 44%)
15K9.32 mi3.11 mi2435-1602329-1542329-1542741(Top 10%)2618(Top 17%)2618(Top 50%)
20K12.43 mi3.11 mi2438-32336-72336-72596(Top 10%)2484(Top 16%)2484(Top 47%)
Half13.11 mi0.68 mi2405+332304+322304+321921(Top 7%)1846(Top 12%)1846(Top 35%)
25K15.53 mi2.42 mi2502-972395-912395-913103(Top 12%)2958(Top 19%)2958(Top 56%)
30K18.64 mi3.11 mi2706-2042586-1912586-1914121(Top 15%)3842(Top 25%)3842(Top 73%)
20M20.00 mi1.36 mi2778-722654-682654-684441(Top 17%)4082(Top 27%)4082(Top 77%)
21M21.00 mi1.00 mi2864-862736-822736-824714(Top 18%)4255(Top 28%)4255(Top 81%)
35K21.75 mi0.75 mi2891-272756-202756-203822(Top 14%)3516(Top 23%)3516(Top 67%)
23M23.00 mi1.25 mi2902-112761-52761-53637(Top 14%)3361(Top 22%)3361(Top 64%)
24M24.00 mi1.00 mi2959-572811-502811-504229(Top 16%)3841(Top 25%)3841(Top 73%)
40K24.85 mi0.85 mi2923+362777+342777+342739(Top 10%)2525(Top 17%)2525(Top 48%)
25.2M25.20 mi0.35 mi2905+182757+202757+202901(Top 11%)2656(Top 18%)2656(Top 50%)
Finish26.22 mi1.02 mi2817+882676+812676+811749(Top 7%)1645(Top 11%)1645(Top 31%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2741

Males

2618

M18-39

2618

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2409

Males

2307

M18-39

2307

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2741

Males

2618

M18-39

2618

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2596

Males

2484

M18-39

2484

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1921

Males

1846

M18-39

1846

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3103

Males

2958

M18-39

2958

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4121

Males

3842

M18-39

3842

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4441

Males

4082

M18-39

4082

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4714

Males

4255

M18-39

4255

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3822

Males

3516

M18-39

3516

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3637

Males

3361

M18-39

3361

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4229

Males

3841

M18-39

3841

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2739

Males

2525

M18-39

2525

40K→25.2M

24.9 - 25.2 mi

Top 11%
×1story
+13ft-16ft

Overall

2901

Males

2656

M18-39

2656

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1749

Males

1645

M18-39

1645

Passing Analysis

Category:
Athletes Passed
569
Passed By
1181
Net Change
-612
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2205
5K → 10K85155-70#2205#2275
10K → 15K27187-160#2275#2435
15K → 20K6063-3#2435#2438
20K → Half352+33#2438#2405
Half → 25K23120-97#2405#2502
25K → 30K24228-204#2502#2706
30K → 20M1890-72#2706#2778
20M → 21M22108-86#2778#2864
21M → 35K2047-27#2864#2891
35K → 23M5061-11#2891#2902
23M → 24M2683-57#2902#2959
24M → 40K5721+36#2959#2923
40K → 25.2M279+18#2923#2905
25.2M → Finish957+88#2905#2817
TOTALS5691181-612
📊

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