Boston Marathon logo
BOSTON MARATHON 2024

Alexander Kellam

Bib: 4073•M

CO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Top 8%
Gender (Male)
#0 / 14578
Top 13%
Division (M18-39)
#0 / 4849
Top 31%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:22
Rank: #3665
Start → 5K
20:22 | 6:33/mi
10K· 6.21 mi
40:51
Rank: #3582 (+83)
5K → 10K
20:29 | 6:36/mi
15K· 9.32 mi
1:01:07
Rank: #3317 (+265)
10K → 15K
20:16 | 6:31/mi
20K· 12.43 mi
1:21:32
Rank: #3032 (+285)
15K → 20K
20:25 | 6:34/mi
Half· 13.11 mi
1:26:02
Rank: #3024 (+8)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:42:16
Rank: #2884 (+140)
Half → 25K
16:14 | 6:42/mi
30K· 18.64 mi
2:04:32
Rank: #2947 (-63)
25K → 30K
22:16 | 7:10/mi
20M
2:13:46
Rank: #2762 (+185)
30K → 20M
9:14 | 6:48/mi
21M
2:21:07
Rank: #2652 (+110)
20M → 21M
7:21 | 7:21/mi
35K· 21.75 mi
2:26:03
Rank: #2567 (+85)
21M → 35K
4:56 | 6:36/mi
23M
2:34:42
Rank: #2452 (+115)
35K → 23M
8:39 | 6:55/mi
24M
2:41:28
Rank: #2368 (+84)
23M → 24M
6:46 | 6:46/mi
40K· 24.85 mi
2:47:08
Rank: #2217 (+151)
24M → 40K
5:40 | 6:38/mi
25.2M
2:49:40
Rank: #2167 (+50)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
2:56:05
Rank: #2059 (+108)
25.2M → Finish
6:25 | 6:18/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
Time1:26:02
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:30:03
Pace6:52 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5020:226:3320:22
6:33
-
10K
6.21 mi10:44:1940:516:3420:29
6:36
+0:03
15K
9.32 mi11:04:351:01:076:3320:16
6:31
-0:05
20K
12.43 mi11:25:001:21:326:3420:25
6:34
+0:03
Half
13.11 mi11:29:301:26:026:344:30
6:36
+0:02
25K
15.53 mi11:45:441:42:166:3516:14
6:42
+0:06
30K
18.64 mi12:08:002:04:326:4122:16
7:10
+0:28
20M
20.00 mi12:17:142:13:466:419:14
6:48
-0:22
21M
21.00 mi12:24:352:21:076:437:21
7:21
+0:33
35K
21.75 mi12:29:312:26:036:434:56
6:36
-0:45
23M
23.00 mi12:38:102:34:426:448:39
6:55
+0:19
24M
24.00 mi12:44:562:41:286:446:46
6:46
-0:09
40K
24.85 mi12:50:362:47:086:435:40
6:38
-0:08
25.2M
25.20 mi12:53:082:49:406:442:32
7:21
+0:43
Finish
26.22 mi12:59:332:56:056:436:25
6:18
-1:03

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

6:18 /mi

Average Pace

6:43 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:56

82% of race

Time at Steady Pace

32:09

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:43 /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 mi10:23:5020:226:3320:22
6:33
#3665
10K
6.21 mi10:44:1940:516:3420:29
6:36
#3582
15K
9.32 mi11:04:351:01:076:3320:16
6:31
#3317
20K
12.43 mi11:25:001:21:326:3420:25
6:34
#3032
Half
13.11 mi11:29:301:26:026:344:30
6:36
#3024
25K
15.53 mi11:45:441:42:166:3516:14
6:42
#2884
30K
18.64 mi12:08:002:04:326:4122:16
7:10
#2947
20M
20.00 mi12:17:142:13:466:419:14
6:48
#2762
21M
21.00 mi12:24:352:21:076:437:21
7:21
#2652
35K
21.75 mi12:29:312:26:036:434:56
6:36
#2567
23M
23.00 mi12:38:102:34:426:448:39
6:55
#2452
24M
24.00 mi12:44:562:41:286:446:46
6:46
#2368
40K
24.85 mi12:50:362:47:086:435:40
6:38
#2217
25.2M
25.20 mi12:53:082:49:406:442:32
7:21
#2167
Finish
26.22 mi12:59:332:56:056:436:25
6:18
#2059
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3665347834782834(Top 11%)2708(Top 19%)2708(Top 56%)
10K6.21 mi3.10 mi3582+833399+793399+793549(Top 14%)3360(Top 23%)3360(Top 69%)
15K9.32 mi3.11 mi3317+2653156+2433156+2432834(Top 11%)2708(Top 19%)2708(Top 56%)
20K12.43 mi3.11 mi3032+2852893+2632893+2632496(Top 10%)2388(Top 16%)2388(Top 49%)
Half13.11 mi0.68 mi3024+82887+62887+63088(Top 12%)2932(Top 20%)2932(Top 60%)
25K15.53 mi2.42 mi2884+1402751+1362751+1362590(Top 10%)2458(Top 17%)2458(Top 51%)
30K18.64 mi3.11 mi2947-632796-452796-453635(Top 14%)3317(Top 23%)3317(Top 68%)
20M20.00 mi1.36 mi2762+1852622+1742622+1741585(Top 6%)1503(Top 10%)1503(Top 31%)
21M21.00 mi1.00 mi2652+1102516+1062516+1062007(Top 8%)1864(Top 13%)1864(Top 38%)
35K21.75 mi0.75 mi2567+852437+792437+791538(Top 6%)1441(Top 10%)1441(Top 30%)
23M23.00 mi1.25 mi2452+1152329+1082329+1081637(Top 6%)1520(Top 10%)1520(Top 31%)
24M24.00 mi1.00 mi2368+842245+842245+841577(Top 6%)1453(Top 10%)1453(Top 30%)
40K24.85 mi0.85 mi2217+1512100+1452100+145957(Top 4%)889(Top 6%)889(Top 18%)
25.2M25.20 mi0.35 mi2167+502055+452055+451125(Top 4%)1038(Top 7%)1038(Top 21%)
Finish26.22 mi1.02 mi2059+1081955+1001955+100914(Top 4%)846(Top 6%)846(Top 17%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

2834

Males

2708

M18-39

2708

5K→10K

3.1 - 6.2 mi

Top 14%
×5stories
+79ft-138ft

Overall

3549

Males

3360

M18-39

3360

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

2834

Males

2708

M18-39

2708

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2496

Males

2388

M18-39

2388

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3088

Males

2932

M18-39

2932

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2590

Males

2458

M18-39

2458

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3635

Males

3317

M18-39

3317

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1585

Males

1503

M18-39

1503

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2007

Males

1864

M18-39

1864

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1538

Males

1441

M18-39

1441

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1637

Males

1520

M18-39

1520

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1577

Males

1453

M18-39

1453

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

957

Males

889

M18-39

889

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1125

Males

1038

M18-39

1038

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

914

Males

846

M18-39

846

Passing Analysis

Category:
Athletes Passed
2024
Passed By
418
Net Change
+1606
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3665
5K → 10K18198+83#3665#3582
10K → 15K27510+265#3582#3317
15K → 20K29813+285#3317#3032
20K → Half2416+8#3032#3024
Half → 25K16626+140#3024#2884
25K → 30K144207-63#2884#2947
30K → 20M1938+185#2947#2762
20M → 21M12515+110#2762#2652
21M → 35K861+85#2652#2567
35K → 23M12914+115#2567#2452
23M → 24M906+84#2452#2368
24M → 40K1510+151#2368#2217
40K → 25.2M511+50#2217#2167
25.2M → Finish1113+108#2167#2059
TOTALS2024418+1606
📊

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