Boston Marathon logo
BOSTON MARATHON 2023

Thomas Mackey

Bib: 5944•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 26%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:47
Rank: #3588
Start → 5K
20:47 | 6:41/mi
10K· 6.21 mi
41:45
Rank: #4184 (-596)
5K → 10K
20:58 | 6:45/mi
15K· 9.32 mi
1:02:40
Rank: #4253 (-69)
10K → 15K
20:55 | 6:44/mi
20K· 12.43 mi
1:24:00
Rank: #4441 (-188)
15K → 20K
21:20 | 6:52/mi
Half· 13.11 mi
1:28:34
Rank: #4421 (+20)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:45:05
Rank: #4368 (+53)
Half → 25K
16:31 | 6:49/mi
30K· 18.64 mi
2:06:33
Rank: #4206 (+162)
25K → 30K
21:28 | 6:55/mi
20M
2:15:57
Rank: #4129 (+77)
30K → 20M
9:24 | 6:55/mi
21M
2:23:30
Rank: #4166 (-37)
20M → 21M
7:33 | 7:33/mi
35K· 21.75 mi
2:28:37
Rank: #4172 (-6)
21M → 35K
5:07 | 6:50/mi
23M
2:37:17
Rank: #4098 (+74)
35K → 23M
8:40 | 6:55/mi
24M
2:44:04
Rank: #4056 (+42)
23M → 24M
6:47 | 6:47/mi
40K· 24.85 mi
2:50:13
Rank: #4104 (-48)
24M → 40K
6:09 | 7:12/mi
25.2M
2:52:50
Rank: #4107 (-3)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:00:29
Rank: #4303 (-196)
25.2M → Finish
7:39 | 7:30/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
Time1:28:34
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:31:55
Pace7:01 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5220:476:4120:47
6:41
-
10K
6.21 mi10:44:5041:456:4320:58
6:45
+0:04
15K
9.32 mi11:05:451:02:406:4320:55
6:44
-0:01
20K
12.43 mi11:27:051:24:006:4621:20
6:52
+0:08
Half
13.11 mi11:31:391:28:346:454:34
6:42
-0:10
25K
15.53 mi11:48:101:45:056:4616:31
6:49
+0:07
30K
18.64 mi12:09:382:06:336:4721:28
6:55
+0:06
20M
20.00 mi12:19:022:15:576:489:24
6:55
0:00
21M
21.00 mi12:26:352:23:306:507:33
7:33
+0:38
35K
21.75 mi12:31:422:28:376:505:07
6:50
-0:43
23M
23.00 mi12:40:222:37:176:508:40
6:55
+0:05
24M
24.00 mi12:47:092:44:046:506:47
6:47
-0:08
40K
24.85 mi12:53:182:50:136:516:09
7:12
+0:25
25.2M
25.20 mi12:55:552:52:506:522:37
7:35
+0:23
Finish
26.22 mi13:03:343:00:296:537:39
7:30
-0:05

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

6:41 /mi

Average Pace

6:53 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:40

90% of race

Time at Steady Pace

17:49

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:53 /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 mi10:23:5220:476:4120:47
6:41
#3588
10K
6.21 mi10:44:5041:456:4320:58
6:45
#4184
15K
9.32 mi11:05:451:02:406:4320:55
6:44
#4253
20K
12.43 mi11:27:051:24:006:4621:20
6:52
#4441
Half
13.11 mi11:31:391:28:346:454:34
6:42
#4421
25K
15.53 mi11:48:101:45:056:4616:31
6:49
#4368
30K
18.64 mi12:09:382:06:336:4721:28
6:55
#4206
20M
20.00 mi12:19:022:15:576:489:24
6:55
#4129
21M
21.00 mi12:26:352:23:306:507:33
7:33
#4166
35K
21.75 mi12:31:422:28:376:505:07
6:50
#4172
23M
23.00 mi12:40:222:37:176:508:40
6:55
#4098
24M
24.00 mi12:47:092:44:046:506:47
6:47
#4056
40K
24.85 mi12:53:182:50:136:516:09
7:12
#4104
25.2M
25.20 mi12:55:552:52:506:522:37
7:35
#4107
Finish
26.22 mi13:03:343:00:296:537:39
7:30
#4303
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3588338133814443(Top 17%)4152(Top 27%)4152(Top 79%)
10K6.21 mi3.10 mi4184-5963922-5413922-5414802(Top 18%)4459(Top 29%)4459(Top 84%)
15K9.32 mi3.11 mi4253-693985-633985-634443(Top 17%)4152(Top 27%)4152(Top 79%)
20K12.43 mi3.11 mi4441-1884153-1684153-1685051(Top 19%)4674(Top 31%)4674(Top 88%)
Half13.11 mi0.68 mi4421+204138+154138+154285(Top 16%)4009(Top 26%)4009(Top 76%)
25K15.53 mi2.42 mi4368+534088+504088+504256(Top 16%)3981(Top 26%)3981(Top 75%)
30K18.64 mi3.11 mi4206+1623949+1393949+1393725(Top 14%)3497(Top 23%)3497(Top 66%)
20M20.00 mi1.36 mi4129+773878+713878+713549(Top 13%)3314(Top 22%)3314(Top 63%)
21M21.00 mi1.00 mi4166-373903-253903-254806(Top 18%)4333(Top 29%)4333(Top 82%)
35K21.75 mi0.75 mi4172-63906-33906-34430(Top 17%)4048(Top 27%)4048(Top 77%)
23M23.00 mi1.25 mi4098+743839+673839+673380(Top 13%)3133(Top 21%)3133(Top 59%)
24M24.00 mi1.00 mi4056+423799+403799+403567(Top 13%)3278(Top 22%)3278(Top 62%)
40K24.85 mi0.85 mi4104-483841-423841-424824(Top 18%)4224(Top 28%)4224(Top 80%)
25.2M25.20 mi0.35 mi4107-33845-43845-44289(Top 16%)3759(Top 25%)3759(Top 71%)
Finish26.22 mi1.02 mi4303-1964015-1704015-1708554(Top 32%)6484(Top 43%)6484(Top 123%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4443

Males

4152

M18-39

4152

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4802

Males

4459

M18-39

4459

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4443

Males

4152

M18-39

4152

15K→20K

9.3 - 12.4 mi

Top 19%
×5stories
+106ft-86ft

Overall

5051

Males

4674

M18-39

4674

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4285

Males

4009

M18-39

4009

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4256

Males

3981

M18-39

3981

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

3725

Males

3497

M18-39

3497

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3549

Males

3314

M18-39

3314

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4806

Males

4333

M18-39

4333

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4430

Males

4048

M18-39

4048

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3380

Males

3133

M18-39

3133

23M→24M

23.0 - 24.0 mi

Top 13%
×6stories
+12ft-82ft

Overall

3567

Males

3278

M18-39

3278

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

4824

Males

4224

M18-39

4224

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4289

Males

3759

M18-39

3759

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

8554

Males

6484

M18-39

6484

Passing Analysis

Category:
Athletes Passed
965
Passed By
1680
Net Change
-715
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3588
5K → 10K36632-596#3588#4184
10K → 15K104173-69#4184#4253
15K → 20K49237-188#4253#4441
20K → Half3111+20#4441#4421
Half → 25K11057+53#4421#4368
25K → 30K20038+162#4368#4206
30K → 20M10427+77#4206#4129
20M → 21M5996-37#4129#4166
21M → 35K3036-6#4166#4172
35K → 23M10026+74#4172#4098
23M → 24M7432+42#4098#4056
24M → 40K3482-48#4056#4104
40K → 25.2M2326-3#4104#4107
25.2M → Finish11207-196#4107#4303
TOTALS9651680-715
📊

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