Boston Marathon logo
BOSTON MARATHON 2023

Jacob Mccomb

Bib: 3117•M

CT

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 4%
Division (M18-39)
#0 / 5285
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:36
Rank: #1455
Start → 5K
19:36 | 6:19/mi
10K· 6.21 mi
38:39
Rank: #1250 (+205)
5K → 10K
19:03 | 6:08/mi
15K· 9.32 mi
57:46
Rank: #1187 (+63)
10K → 15K
19:07 | 6:09/mi
20K· 12.43 mi
1:16:54
Rank: #1126 (+61)
15K → 20K
19:08 | 6:10/mi
Half· 13.11 mi
1:21:06
Rank: #1125 (+1)
20K → Half
4:12 | 6:09/mi
25K· 15.53 mi
1:36:02
Rank: #1076 (+49)
Half → 25K
14:56 | 6:10/mi
30K· 18.64 mi
1:55:18
Rank: #977 (+99)
25K → 30K
19:16 | 6:12/mi
20M
2:03:38
Rank: #931 (+46)
30K → 20M
8:20 | 6:08/mi
21M
2:09:59
Rank: #888 (+43)
20M → 21M
6:21 | 6:21/mi
35K· 21.75 mi
2:14:25
Rank: #862 (+26)
21M → 35K
4:26 | 5:56/mi
23M
2:22:01
Rank: #815 (+47)
35K → 23M
7:36 | 6:04/mi
24M
2:27:48
Rank: #775 (+40)
23M → 24M
5:47 | 5:47/mi
40K· 24.85 mi
2:32:47
Rank: #735 (+40)
24M → 40K
4:59 | 5:50/mi
25.2M
2:34:56
Rank: #718 (+17)
40K → 25.2M
2:09 | 6:14/mi
Finish· 26.22 mi
2:40:42
Rank: #682 (+36)
25.2M → Finish
5:46 | 5:40/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 Half
Distance13.11 mi
Time1:21:06
Pace6:11 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:19:36
Pace6:04 /mi
📊Negative Split: 1.8% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5719:366:1919:36
6:19
-
10K
6.21 mi10:40:0038:396:1319:03
6:08
-0:11
15K
9.32 mi10:59:0757:466:1219:07
6:09
+0:01
20K
12.43 mi11:18:151:16:546:1119:08
6:10
+0:01
Half
13.11 mi11:22:271:21:066:114:12
6:09
-0:01
25K
15.53 mi11:37:231:36:026:1114:56
6:10
+0:01
30K
18.64 mi11:56:391:55:186:1119:16
6:12
+0:02
20M
20.00 mi12:04:592:03:386:118:20
6:08
-0:04
21M
21.00 mi12:11:202:09:596:116:21
6:21
+0:13
35K
21.75 mi12:15:462:14:256:114:26
5:56
-0:25
23M
23.00 mi12:23:222:22:016:107:36
6:04
+0:08
24M
24.00 mi12:29:092:27:486:105:47
5:47
-0:17
40K
24.85 mi12:34:082:32:476:094:59
5:50
+0:03
25.2M
25.20 mi12:36:172:34:566:092:09
6:14
+0:24
Finish
26.22 mi12:42:032:40:426:085:46
5:40
-0:34

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

5:40 /mi

Average Pace

6:08 /mi

Slowest Pace

6:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:45

84% of race

Time at Steady Pace

25:57

16% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:08 /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 mi10:20:5719:366:1919:36
6:19
#1455
10K
6.21 mi10:40:0038:396:1319:03
6:08
#1250
15K
9.32 mi10:59:0757:466:1219:07
6:09
#1187
20K
12.43 mi11:18:151:16:546:1119:08
6:10
#1126
Half
13.11 mi11:22:271:21:066:114:12
6:09
#1125
25K
15.53 mi11:37:231:36:026:1114:56
6:10
#1076
30K
18.64 mi11:56:391:55:186:1119:16
6:12
#977
20M
20.00 mi12:04:592:03:386:118:20
6:08
#931
21M
21.00 mi12:11:202:09:596:116:21
6:21
#888
35K
21.75 mi12:15:462:14:256:114:26
5:56
#862
23M
23.00 mi12:23:222:22:016:107:36
6:04
#815
24M
24.00 mi12:29:092:27:486:105:47
5:47
#775
40K
24.85 mi12:34:082:32:476:094:59
5:50
#735
25.2M
25.20 mi12:36:172:34:566:092:09
6:14
#718
Finish
26.22 mi12:42:032:40:426:085:46
5:40
#682
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1455138413841100(Top 4%)1047(Top 7%)1047(Top 20%)
10K6.21 mi3.10 mi1250+2051185+1991185+1991114(Top 4%)1056(Top 7%)1056(Top 20%)
15K9.32 mi3.11 mi1187+631126+591126+591100(Top 4%)1047(Top 7%)1047(Top 20%)
20K12.43 mi3.11 mi1126+611071+551071+55924(Top 3%)877(Top 6%)877(Top 17%)
Half13.11 mi0.68 mi1125+11070+11070+11152(Top 4%)1101(Top 7%)1101(Top 21%)
25K15.53 mi2.42 mi1076+491021+491021+49881(Top 3%)835(Top 6%)835(Top 16%)
30K18.64 mi3.11 mi977+99927+94927+94685(Top 3%)648(Top 4%)648(Top 12%)
20M20.00 mi1.36 mi931+46883+44883+44544(Top 2%)510(Top 3%)510(Top 10%)
21M21.00 mi1.00 mi888+43841+42841+42413(Top 2%)381(Top 3%)381(Top 7%)
35K21.75 mi0.75 mi862+26816+25816+25564(Top 2%)526(Top 3%)526(Top 10%)
23M23.00 mi1.25 mi815+47771+45771+45410(Top 2%)382(Top 3%)382(Top 7%)
24M24.00 mi1.00 mi775+40732+39732+39233(Top 0.9%)210(Top 1%)210(Top 4%)
40K24.85 mi0.85 mi735+40693+39693+39169(Top 0.6%)152(Top 1%)152(Top 3%)
25.2M25.20 mi0.35 mi718+17676+17676+17190(Top 0.7%)171(Top 1%)171(Top 3%)
Finish26.22 mi1.02 mi682+36640+36640+36201(Top 0.8%)185(Top 1%)185(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1100

Males

1047

M18-39

1047

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1114

Males

1056

M18-39

1056

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1100

Males

1047

M18-39

1047

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

924

Males

877

M18-39

877

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1152

Males

1101

M18-39

1101

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

881

Males

835

M18-39

835

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

685

Males

648

M18-39

648

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

544

Males

510

M18-39

510

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

413

Males

381

M18-39

381

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

564

Males

526

M18-39

526

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

410

Males

382

M18-39

382

23M→24M

23.0 - 24.0 mi

Top 0.9%
×6stories
+12ft-82ft

Overall

233

Males

210

M18-39

210

24M→40K

24.0 - 24.9 mi

Top 0.6%
×1story
+6ft-20ft

Overall

169

Males

152

M18-39

152

40K→25.2M

24.9 - 25.2 mi

Top 0.7%
×1story
+13ft-16ft

Overall

190

Males

171

M18-39

171

25.2M→Finish

25.2 - 26.2 mi

Top 0.8%
×2stories
+22ft-21ft

Overall

201

Males

185

M18-39

185

Passing Analysis

Category:
Athletes Passed
814
Passed By
41
Net Change
+773
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1455
5K → 10K21510+205#1455#1250
10K → 15K7512+63#1250#1187
15K → 20K654+61#1187#1126
20K → Half32+1#1126#1125
Half → 25K545+49#1125#1076
25K → 30K1023+99#1076#977
30K → 20M471+46#977#931
20M → 21M441+43#931#888
21M → 35K260+26#888#862
35K → 23M481+47#862#815
23M → 24M400+40#815#775
24M → 40K400+40#775#735
40K → 25.2M170+17#735#718
25.2M → Finish382+36#718#682
TOTALS81441+773
📊

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