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BOSTON MARATHON 2024

Kasey Gelfand

Bib: 1817•M

VT

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 9%
Gender (Male)
#0 / 14578
Top 15%
Division (M18-39)
#0 / 4849
Top 33%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:15
Rank: #630
Start → 5K
18:15 | 5:52/mi
10K· 6.21 mi
36:57
Rank: #758 (-128)
5K → 10K
18:42 | 6:01/mi
15K· 9.32 mi
55:43
Rank: #780 (-22)
10K → 15K
18:46 | 6:02/mi
20K· 12.43 mi
1:14:40
Rank: #787 (-7)
15K → 20K
18:57 | 6:06/mi
Half· 13.11 mi
1:18:48
Rank: #791 (-4)
20K → Half
4:08 | 6:03/mi
25K· 15.53 mi
1:34:05
Rank: #813 (-22)
Half → 25K
15:17 | 6:18/mi
30K· 18.64 mi
1:56:43
Rank: #1176 (-363)
25K → 30K
22:38 | 7:17/mi
20M
2:07:06
Rank: #1340 (-164)
30K → 20M
10:23 | 7:38/mi
21M
2:15:12
Rank: #1449 (-109)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:20:52
Rank: #1541 (-92)
21M → 35K
5:40 | 7:34/mi
23M
2:31:05
Rank: #1768 (-227)
35K → 23M
10:13 | 8:10/mi
24M
2:39:09
Rank: #1927 (-159)
23M → 24M
8:04 | 8:04/mi
40K· 24.85 mi
2:46:15
Rank: #2065 (-138)
24M → 40K
7:06 | 8:18/mi
25.2M
2:49:16
Rank: #2107 (-42)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
2:57:23
Rank: #2291 (-184)
25.2M → Finish
8:07 | 7:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:48
Pace6:01 /mi
2nd Half
Distance13.11 mi
Time1:38:35
Pace7:31 /mi
📊Positive Split: 25.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:4618:155:5218:15
5:52
-
10K
6.21 mi10:37:2836:575:5718:42
6:01
+0:09
15K
9.32 mi10:56:1455:435:5918:46
6:02
+0:01
20K
12.43 mi11:15:111:14:406:0018:57
6:06
+0:04
Half
13.11 mi11:19:191:18:486:014:08
6:03
-0:03
25K
15.53 mi11:34:361:34:056:0315:17
6:18
+0:15
30K
18.64 mi11:57:141:56:436:1622:38
7:17
+0:59
20M
20.00 mi12:07:372:07:066:2110:23
7:38
+0:21
21M
21.00 mi12:15:432:15:126:268:06
8:06
+0:28
35K
21.75 mi12:21:232:20:526:295:40
7:34
-0:32
23M
23.00 mi12:31:362:31:056:3410:13
8:10
+0:36
24M
24.00 mi12:39:402:39:096:388:04
8:04
-0:06
40K
24.85 mi12:46:462:46:156:417:06
8:18
+0:14
25.2M
25.20 mi12:49:472:49:166:433:01
8:45
+0:27
Finish
26.22 mi12:57:542:57:236:468:07
7:58
-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

5:52 /mi

Average Pace

6:46 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:05

53% of race

Time at Steady Pace

46:48

26% of race

Time at Slower Pace

36:30

21% of race

Average Pace: 6:46 /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 mi10:18:4618:155:5218:15
5:52
#630
10K
6.21 mi10:37:2836:575:5718:42
6:01
#758
15K
9.32 mi10:56:1455:435:5918:46
6:02
#780
20K
12.43 mi11:15:111:14:406:0018:57
6:06
#787
Half
13.11 mi11:19:191:18:486:014:08
6:03
#791
25K
15.53 mi11:34:361:34:056:0315:17
6:18
#813
30K
18.64 mi11:57:141:56:436:1622:38
7:17
#1176
20M
20.00 mi12:07:372:07:066:2110:23
7:38
#1340
21M
21.00 mi12:15:432:15:126:268:06
8:06
#1449
35K
21.75 mi12:21:232:20:526:295:40
7:34
#1541
23M
23.00 mi12:31:362:31:056:3410:13
8:10
#1768
24M
24.00 mi12:39:402:39:096:388:04
8:04
#1927
40K
24.85 mi12:46:462:46:156:417:06
8:18
#2065
25.2M
25.20 mi12:49:472:49:166:433:01
8:45
#2107
Finish
26.22 mi12:57:542:57:236:468:07
7:58
#2291
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi630604604880(Top 3%)853(Top 6%)853(Top 18%)
10K6.21 mi3.10 mi758-128731-127731-127919(Top 4%)885(Top 6%)885(Top 18%)
15K9.32 mi3.11 mi780-22753-22753-22880(Top 3%)853(Top 6%)853(Top 18%)
20K12.43 mi3.11 mi787-7760-7760-7806(Top 3%)775(Top 5%)775(Top 16%)
Half13.11 mi0.68 mi791-4764-4764-4957(Top 4%)924(Top 6%)924(Top 19%)
25K15.53 mi2.42 mi813-22780-16780-161153(Top 5%)1114(Top 8%)1114(Top 23%)
30K18.64 mi3.11 mi1176-3631136-3561136-3564122(Top 16%)3712(Top 25%)3712(Top 77%)
20M20.00 mi1.36 mi1340-1641292-1561292-1564901(Top 19%)4177(Top 29%)4177(Top 86%)
21M21.00 mi1.00 mi1449-1091395-1031395-1034512(Top 18%)3778(Top 26%)3778(Top 78%)
35K21.75 mi0.75 mi1541-921482-871482-875375(Top 21%)4299(Top 29%)4299(Top 89%)
23M23.00 mi1.25 mi1768-2271697-2151697-2156556(Top 26%)4826(Top 33%)4826(Top 100%)
24M24.00 mi1.00 mi1927-1591842-1451842-1456944(Top 27%)4940(Top 34%)4940(Top 102%)
40K24.85 mi0.85 mi2065-1381972-1301972-1307312(Top 29%)4988(Top 34%)4988(Top 103%)
25.2M25.20 mi0.35 mi2107-422003-312003-315363(Top 21%)3898(Top 27%)3898(Top 80%)
Finish26.22 mi1.02 mi2291-1842155-1522155-1528280(Top 32%)5530(Top 38%)5530(Top 114%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

880

Males

853

M18-39

853

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

919

Males

885

M18-39

885

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

880

Males

853

M18-39

853

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

806

Males

775

M18-39

775

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

957

Males

924

M18-39

924

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1153

Males

1114

M18-39

1114

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4122

Males

3712

M18-39

3712

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

4901

Males

4177

M18-39

4177

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4512

Males

3778

M18-39

3778

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5375

Males

4299

M18-39

4299

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

6556

Males

4826

M18-39

4826

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

6944

Males

4940

M18-39

4940

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7312

Males

4988

M18-39

4988

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5363

Males

3898

M18-39

3898

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8280

Males

5530

M18-39

5530

Passing Analysis

Category:
Athletes Passed
186
Passed By
1847
Net Change
-1661
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#630
5K → 10K5133-128#630#758
10K → 15K1840-22#758#780
15K → 20K3441-7#780#787
20K → Half15-4#787#791
Half → 25K3254-22#791#813
25K → 30K6369-363#813#1176
30K → 20M16180-164#1176#1340
20M → 21M17126-109#1340#1449
21M → 35K10102-92#1449#1541
35K → 23M10237-227#1541#1768
23M → 24M10169-159#1768#1927
24M → 40K9147-138#1927#2065
40K → 25.2M749-42#2065#2107
25.2M → Finish11195-184#2107#2291
TOTALS1861847-1661
📊

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