Boston Marathon logo
BOSTON MARATHON 2024

Stephen Kallir

Bib: 6467•M

AB

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 30%
Gender (Male)
#0 / 14578
Top 41%
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
21:34
Rank: #6670
Start → 5K
21:34 | 6:56/mi
10K· 6.21 mi
43:02
Rank: #6344 (+326)
5K → 10K
21:28 | 6:55/mi
15K· 9.32 mi
1:04:48
Rank: #6281 (+63)
10K → 15K
21:46 | 7:00/mi
20K· 12.43 mi
1:27:26
Rank: #6403 (-122)
15K → 20K
22:38 | 7:17/mi
Half· 13.11 mi
1:32:32
Rank: #6495 (-92)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:51:10
Rank: #6679 (-184)
Half → 25K
18:38 | 7:41/mi
30K· 18.64 mi
2:16:20
Rank: #6915 (-236)
25K → 30K
25:10 | 8:06/mi
20M
2:28:21
Rank: #7189 (-274)
30K → 20M
12:01 | 8:51/mi
21M
2:37:31
Rank: #7241 (-52)
20M → 21M
9:10 | 9:10/mi
35K· 21.75 mi
2:43:53
Rank: #7319 (-78)
21M → 35K
6:22 | 8:31/mi
23M
2:55:01
Rank: #7434 (-115)
35K → 23M
11:08 | 8:54/mi
24M
3:03:29
Rank: #7465 (-31)
23M → 24M
8:28 | 8:28/mi
40K· 24.85 mi
3:10:53
Rank: #7484 (-19)
24M → 40K
7:24 | 8:39/mi
25.2M
3:14:45
Rank: #7633 (-149)
40K → 25.2M
3:52 | 11:13/mi
Finish· 26.22 mi
3:22:39
Rank: #7554 (+79)
25.2M → Finish
7:54 | 7:45/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
Time1:32:32
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:50:07
Pace8:24 /mi
📊Positive Split: 19.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:4421:346:5621:34
6:56
-
10K
6.21 mi10:48:1243:026:5621:28
6:55
-0:01
15K
9.32 mi11:09:581:04:486:5721:46
7:00
+0:05
20K
12.43 mi11:32:361:27:267:0222:38
7:17
+0:17
Half
13.11 mi11:37:421:32:327:045:06
7:29
+0:12
25K
15.53 mi11:56:201:51:107:0918:38
7:41
+0:12
30K
18.64 mi12:21:302:16:207:1925:10
8:06
+0:25
20M
20.00 mi12:33:312:28:217:2512:01
8:51
+0:45
21M
21.00 mi12:42:412:37:317:309:10
9:10
+0:19
35K
21.75 mi12:49:032:43:537:326:22
8:31
-0:39
23M
23.00 mi13:00:112:55:017:3711:08
8:54
+0:23
24M
24.00 mi13:08:393:03:297:398:28
8:28
-0:26
40K
24.85 mi13:16:033:10:537:417:24
8:39
+0:11
25.2M
25.20 mi13:19:553:14:457:443:52
11:13
+2:34
Finish
26.22 mi13:27:493:22:397:447:54
7:45
-3:28

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

6:55 /mi

Average Pace

7:44 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:32

46% of race

Time at Steady Pace

1:06:32

33% of race

Time at Slower Pace

43:35

22% of race

Average Pace: 7:44 /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 mi10:26:4421:346:5621:34
6:56
#6670
10K
6.21 mi10:48:1243:026:5621:28
6:55
#6344
15K
9.32 mi11:09:581:04:486:5721:46
7:00
#6281
20K
12.43 mi11:32:361:27:267:0222:38
7:17
#6403
Half
13.11 mi11:37:421:32:327:045:06
7:29
#6495
25K
15.53 mi11:56:201:51:107:0918:38
7:41
#6679
30K
18.64 mi12:21:302:16:207:1925:10
8:06
#6915
20M
20.00 mi12:33:312:28:217:2512:01
8:51
#7189
21M
21.00 mi12:42:412:37:317:309:10
9:10
#7241
35K
21.75 mi12:49:032:43:537:326:22
8:31
#7319
23M
23.00 mi13:00:112:55:017:3711:08
8:54
#7434
24M
24.00 mi13:08:393:03:297:398:28
8:28
#7465
40K
24.85 mi13:16:033:10:537:417:24
8:39
#7484
25.2M
25.20 mi13:19:553:14:457:443:52
11:13
#7633
Finish
26.22 mi13:27:493:22:397:447:54
7:45
#7554
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6670593159316241(Top 24%)5561(Top 38%)5561(Top 115%)
10K6.21 mi3.10 mi6344+3265679+2525679+2526073(Top 24%)5466(Top 37%)5466(Top 113%)
15K9.32 mi3.11 mi6281+635628+515628+516241(Top 24%)5561(Top 38%)5561(Top 115%)
20K12.43 mi3.11 mi6403-1225682-545682-546882(Top 27%)5920(Top 41%)5920(Top 122%)
Half13.11 mi0.68 mi6495-925742-605742-608862(Top 35%)7079(Top 49%)7079(Top 146%)
25K15.53 mi2.42 mi6679-1845840-985840-988176(Top 32%)6520(Top 45%)6520(Top 134%)
30K18.64 mi3.11 mi6915-2365936-965936-968444(Top 33%)6467(Top 44%)6467(Top 133%)
20M20.00 mi1.36 mi7189-2746078-1426078-14211270(Top 44%)7609(Top 52%)7609(Top 157%)
21M21.00 mi1.00 mi7241-526061+176061+179325(Top 36%)6436(Top 44%)6436(Top 133%)
35K21.75 mi0.75 mi7319-786073-126073-1210755(Top 42%)7095(Top 49%)7095(Top 146%)
23M23.00 mi1.25 mi7434-1156086-136086-1310585(Top 41%)6852(Top 47%)6852(Top 141%)
24M24.00 mi1.00 mi7465-316047+396047+399240(Top 36%)6157(Top 42%)6157(Top 127%)
40K24.85 mi0.85 mi7484-196022+256022+259125(Top 36%)5956(Top 41%)5956(Top 123%)
25.2M25.20 mi0.35 mi7633-1496084-626084-6215114(Top 59%)8978(Top 62%)8978(Top 185%)
Finish26.22 mi1.02 mi7554+795993+915993+917047(Top 28%)4892(Top 34%)4892(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6241

Males

5561

M18-39

5561

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6073

Males

5466

M18-39

5466

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6241

Males

5561

M18-39

5561

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

6882

Males

5920

M18-39

5920

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

8862

Males

7079

M18-39

7079

Half→25K

13.1 - 15.5 mi

Top 32%
×4stories
+66ft-88ft

Overall

8176

Males

6520

M18-39

6520

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8444

Males

6467

M18-39

6467

30K→20M

18.6 - 20.0 mi

Top 44%
×5stories
+64ft-50ft

Overall

11270

Males

7609

M18-39

7609

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

9325

Males

6436

M18-39

6436

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

10755

Males

7095

M18-39

7095

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

10585

Males

6852

M18-39

6852

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

9240

Males

6157

M18-39

6157

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9125

Males

5956

M18-39

5956

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15114

Males

8978

M18-39

8978

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7047

Males

4892

M18-39

4892

Passing Analysis

Category:
Athletes Passed
1570
Passed By
2454
Net Change
-884
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6670
5K → 10K39064+326#6670#6344
10K → 15K172109+63#6344#6281
15K → 20K124246-122#6281#6403
20K → Half15107-92#6403#6495
Half → 25K98282-184#6495#6679
25K → 30K152388-236#6679#6915
30K → 20M50324-274#6915#7189
20M → 21M103155-52#7189#7241
21M → 35K68146-78#7241#7319
35K → 23M88203-115#7319#7434
23M → 24M93124-31#7434#7465
24M → 40K7594-19#7465#7484
40K → 25.2M18167-149#7484#7633
25.2M → Finish12445+79#7633#7554
TOTALS15702454-884
📊

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