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BOSTON MARATHON 2024

Kirk Zafirovski

Bib: 8638•M

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 44%
Gender (Male)
#0 / 14578
Division (M18-39)
#0 / 4849
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:42
Rank: #9220
Start → 5K
22:42 | 7:18/mi
10K· 6.21 mi
45:57
Rank: #9599 (-379)
5K → 10K
23:15 | 7:29/mi
15K· 9.32 mi
1:09:32
Rank: #9817 (-218)
10K → 15K
23:35 | 7:35/mi
20K· 12.43 mi
1:34:05
Rank: #10182 (-365)
15K → 20K
24:33 | 7:54/mi
Half· 13.11 mi
1:39:22
Rank: #10202 (-20)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
2:00:30
Rank: #10986 (-784)
Half → 25K
21:08 | 8:43/mi
30K· 18.64 mi
2:30:12
Rank: #12050 (-1064)
25K → 30K
29:42 | 9:34/mi
20M
2:42:52
Rank: #12174 (-124)
30K → 20M
12:40 | 9:19/mi
21M
2:53:07
Rank: #12263 (-89)
20M → 21M
10:15 | 10:15/mi
35K· 21.75 mi
2:59:19
Rank: #12127 (+136)
21M → 35K
6:12 | 8:17/mi
23M
3:10:12
Rank: #11921 (+206)
35K → 23M
10:53 | 8:42/mi
24M
3:18:41
Rank: #11774 (+147)
23M → 24M
8:29 | 8:29/mi
40K· 24.85 mi
3:26:07
Rank: #11614 (+160)
24M → 40K
7:26 | 8:42/mi
25.2M
3:29:21
Rank: #11519 (+95)
40K → 25.2M
3:14 | 9:23/mi
Finish· 26.22 mi
3:37:30
Rank: #11353 (+166)
25.2M → Finish
8:09 | 8:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:22
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:58:08
Pace9:01 /mi
📊Positive Split: 18.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:5422:427:1822:42
7:18
-
10K
6.21 mi11:11:0945:577:2423:15
7:29
+0:11
15K
9.32 mi11:34:441:09:327:2823:35
7:35
+0:06
20K
12.43 mi11:59:171:34:057:3424:33
7:54
+0:19
Half
13.11 mi12:04:341:39:227:355:17
7:45
-0:09
25K
15.53 mi12:25:422:00:307:4521:08
8:43
+0:58
30K
18.64 mi12:55:242:30:128:0329:42
9:34
+0:51
20M
20.00 mi13:08:042:42:528:0912:40
9:19
-0:15
21M
21.00 mi13:18:192:53:078:1510:15
10:15
+0:56
35K
21.75 mi13:24:312:59:198:156:12
8:17
-1:58
23M
23.00 mi13:35:243:10:128:1610:53
8:42
+0:25
24M
24.00 mi13:43:533:18:418:178:29
8:29
-0:13
40K
24.85 mi13:51:193:26:078:187:26
8:42
+0:13
25.2M
25.20 mi13:54:333:29:218:183:14
9:23
+0:41
Finish
26.22 mi14:02:423:37:308:188:09
8:00
-1:23

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

7:18 /mi

Average Pace

8:18 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:31

49% of race

Time at Steady Pace

54:08

25% of race

Time at Slower Pace

55:51

26% of race

Average Pace: 8:18 /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 mi10:47:5422:427:1822:42
7:18
#9220
10K
6.21 mi11:11:0945:577:2423:15
7:29
#9599
15K
9.32 mi11:34:441:09:327:2823:35
7:35
#9817
20K
12.43 mi11:59:171:34:057:3424:33
7:54
#10182
Half
13.11 mi12:04:341:39:227:355:17
7:45
#10202
25K
15.53 mi12:25:422:00:307:4521:08
8:43
#10986
30K
18.64 mi12:55:242:30:128:0329:42
9:34
#12050
20M
20.00 mi13:08:042:42:528:0912:40
9:19
#12174
21M
21.00 mi13:18:192:53:078:1510:15
10:15
#12263
35K
21.75 mi13:24:312:59:198:156:12
8:17
#12127
23M
23.00 mi13:35:243:10:128:1610:53
8:42
#11921
24M
24.00 mi13:43:533:18:418:178:29
8:29
#11774
40K
24.85 mi13:51:193:26:078:187:26
8:42
#11614
25.2M
25.20 mi13:54:333:29:218:183:14
9:23
#11519
Finish
26.22 mi14:02:423:37:308:188:09
8:00
#11353
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi92207533753310350(Top 41%)7969(Top 55%)7969(Top 164%)
10K6.21 mi3.10 mi9599-3797713-1807713-18010132(Top 40%)7948(Top 55%)7948(Top 164%)
15K9.32 mi3.11 mi9817-2187795-827795-8210350(Top 41%)7969(Top 55%)7969(Top 164%)
20K12.43 mi3.11 mi10182-3657912-1177912-11711129(Top 44%)8223(Top 56%)8223(Top 170%)
Half13.11 mi0.68 mi10202-207914-27914-210878(Top 43%)8119(Top 56%)8119(Top 167%)
25K15.53 mi2.42 mi10986-7848241-3278241-32714137(Top 55%)9422(Top 65%)9422(Top 194%)
30K18.64 mi3.11 mi12050-10648647-4068647-40615690(Top 61%)9862(Top 68%)9862(Top 203%)
20M20.00 mi1.36 mi12174-1248648-18648-113693(Top 54%)8705(Top 60%)8705(Top 180%)
21M21.00 mi1.00 mi12263-898620+288620+2813905(Top 54%)8604(Top 59%)8604(Top 177%)
35K21.75 mi0.75 mi12127+1368523+978523+979475(Top 37%)6506(Top 45%)6506(Top 134%)
23M23.00 mi1.25 mi11921+2068366+1578366+1579508(Top 37%)6357(Top 44%)6357(Top 131%)
24M24.00 mi1.00 mi11774+1478255+1118255+1119345(Top 37%)6219(Top 43%)6219(Top 128%)
40K24.85 mi0.85 mi11614+1608134+1218134+1219361(Top 37%)6081(Top 42%)6081(Top 125%)
25.2M25.20 mi0.35 mi11519+958072+628072+628217(Top 32%)5446(Top 37%)5446(Top 112%)
Finish26.22 mi1.02 mi11353+1667937+1357937+1358503(Top 33%)5662(Top 39%)5662(Top 117%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21stories
+97ft-345ft

Overall

10350

Males

7969

M18-39

7969

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10132

Males

7948

M18-39

7948

10K→15K

6.2 - 9.3 mi

Top 41%
×3stories
+67ft-78ft

Overall

10350

Males

7969

M18-39

7969

15K→20K

9.3 - 12.4 mi

Top 44%
×5stories
+106ft-86ft

Overall

11129

Males

8223

M18-39

8223

20K→Half

12.4 - 13.1 mi

Top 43%
×2stories
+19ft-37ft

Overall

10878

Males

8119

M18-39

8119

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

14137

Males

9422

M18-39

9422

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

15690

Males

9862

M18-39

9862

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

13693

Males

8705

M18-39

8705

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

13905

Males

8604

M18-39

8604

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

9475

Males

6506

M18-39

6506

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

9508

Males

6357

M18-39

6357

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

9345

Males

6219

M18-39

6219

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9361

Males

6081

M18-39

6081

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8217

Males

5446

M18-39

5446

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8503

Males

5662

M18-39

5662

Passing Analysis

Category:
Athletes Passed
1815
Passed By
3946
Net Change
-2133
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9220
5K → 10K133512-379#9220#9599
10K → 15K131349-218#9599#9817
15K → 20K131494-365#9817#10182
20K → Half3151-20#10182#10202
Half → 25K65849-784#10202#10986
25K → 30K751139-1064#10986#12050
30K → 20M110234-124#12050#12174
20M → 21M109198-89#12174#12263
21M → 35K15216+136#12263#12127
35K → 23M24034+206#12127#11921
23M → 24M16720+147#11921#11774
24M → 40K18121+160#11774#11614
40K → 25.2M1016+95#11614#11519
25.2M → Finish18923+166#11519#11353
TOTALS18153946-2133
📊

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