Boston Marathon logo
BOSTON MARATHON 2023

Andrew Childs

Bib: 25861•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:49
Rank: #24852
Start → 5K
10:34/mi
32:49 split
10K· 6.21 mi
1:06:12
Rank: #25004 (-152)
5K → 10K
10:45/mi
33:23 split
15K· 9.32 mi
1:36:48
Rank: #24398 (+606)
10K → 15K
9:51/mi
30:36 split
20K· 12.43 mi
2:08:12
Rank: #24049 (+349)
15K → 20K
10:06/mi
31:24 split
Half· 13.11 mi
2:14:48
Rank: #23963 (+86)
20K → Half
9:40/mi
6:36 split
25K· 15.53 mi
2:40:48
Rank: #23866 (+97)
Half → 25K
10:43/mi
26:00 split
30K· 18.64 mi
3:13:11
Rank: #23547 (+319)
25K → 30K
10:25/mi
32:23 split
20M
3:27:15
Rank: #23406 (+141)
30K → 20M
10:21/mi
14:04 split
21M
3:38:19
Rank: #23283 (+123)
20M → 21M
11:04/mi
11:04 split
35K· 21.75 mi
3:46:07
Rank: #23240 (+43)
21M → 35K
10:26/mi
7:48 split
23M
3:59:29
Rank: #23167 (+73)
35K → 23M
10:41/mi
13:22 split
24M
4:09:52
Rank: #23103 (+64)
23M → 24M
10:23/mi
10:23 split
40K· 24.85 mi
4:18:58
Rank: #23029 (+74)
24M → 40K
10:39/mi
9:06 split
25.2M
4:22:46
Rank: #22987 (+42)
40K → 25.2M
11:01/mi
3:48 split
Finish· 26.22 mi
4:32:34
Rank: #22927 (+60)
25.2M → Finish
9:37/mi
9:48 split

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
Time2:14:48
Pace10:17 /mi
2nd Half
Distance13.11 mi
Time2:17:46
Pace10:31 /mi
📊Positive Split: 2.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:1532:4910:3432:49
10:34
-
10K
6.21 mi12:24:381:06:1210:3933:23
10:45
+0:11
15K
9.32 mi12:55:141:36:4810:2330:36
9:51
-0:54
20K
12.43 mi13:26:382:08:1210:1931:24
10:06
+0:15
Half
13.11 mi13:33:142:14:4810:176:36
9:40
-0:26
25K
15.53 mi13:59:142:40:4810:2126:00
10:43
+1:03
30K
18.64 mi14:31:373:13:1110:2232:23
10:25
-0:18
20M
20.00 mi14:45:413:27:1510:2214:04
10:21
-0:04
21M
21.00 mi14:56:453:38:1910:2411:04
11:04
+0:43
35K
21.75 mi15:04:333:46:0710:247:48
10:26
-0:38
23M
23.00 mi15:17:553:59:2910:2513:22
10:41
+0:15
24M
24.00 mi15:28:184:09:5210:2510:23
10:23
-0:18
40K
24.85 mi15:37:244:18:5810:259:06
10:39
+0:16
25.2M
25.20 mi15:41:124:22:4610:263:48
11:01
+0:22
Finish
26.22 mi15:51:004:32:3410:249:48
9:37
-1:24

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

9:37 /mi

Average Pace

10:24 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:51

65% of race

Time at Steady Pace

1:36:43

35% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:24 /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 mi11:51:1532:4910:3432:49
10:34
#24852
10K
6.21 mi12:24:381:06:1210:3933:23
10:45
#25004
15K
9.32 mi12:55:141:36:4810:2330:36
9:51
#24398
20K
12.43 mi13:26:382:08:1210:1931:24
10:06
#24049
Half
13.11 mi13:33:142:14:4810:176:36
9:40
#23963
25K
15.53 mi13:59:142:40:4810:2126:00
10:43
#23866
30K
18.64 mi14:31:373:13:1110:2232:23
10:25
#23547
20M
20.00 mi14:45:413:27:1510:2214:04
10:21
#23406
21M
21.00 mi14:56:453:38:1910:2411:04
11:04
#23283
35K
21.75 mi15:04:333:46:0710:247:48
10:26
#23240
23M
23.00 mi15:17:553:59:2910:2513:22
10:41
#23167
24M
24.00 mi15:28:184:09:5210:2510:23
10:23
#23103
40K
24.85 mi15:37:244:18:5810:259:06
10:39
#23029
25.2M
25.20 mi15:41:124:22:4610:263:48
11:01
#22987
Finish
26.22 mi15:51:004:32:3410:249:48
9:37
#22927
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi24852144701447023172(Top 87%)13715(Top 90%)13715(Top 612%)
10K6.21 mi3.10 mi25004-15214546-7614546-7625075(Top 94%)14567(Top 96%)14567(Top 650%)
15K9.32 mi3.11 mi24398+60614270+27614270+27623172(Top 87%)13715(Top 90%)13715(Top 612%)
20K12.43 mi3.11 mi24049+34914106+16414106+16423124(Top 87%)13688(Top 90%)13688(Top 611%)
Half13.11 mi0.68 mi23963+8614071+3514071+3522578(Top 85%)13438(Top 89%)13438(Top 600%)
25K15.53 mi2.42 mi23866+9714014+5714014+5723547(Top 88%)13825(Top 91%)13825(Top 617%)
30K18.64 mi3.11 mi23547+31913855+15913855+15922054(Top 83%)13095(Top 86%)13095(Top 584%)
20M20.00 mi1.36 mi23406+14113774+8113774+8121401(Top 80%)12742(Top 84%)12742(Top 569%)
21M21.00 mi1.00 mi23283+12313717+5713717+5720963(Top 79%)12506(Top 82%)12506(Top 558%)
35K21.75 mi0.75 mi23240+4313685+3213685+3222233(Top 84%)13033(Top 86%)13033(Top 582%)
23M23.00 mi1.25 mi23167+7313640+4513640+4521703(Top 82%)12775(Top 84%)12775(Top 570%)
24M24.00 mi1.00 mi23103+6413597+4313597+4321748(Top 82%)12755(Top 84%)12755(Top 569%)
40K24.85 mi0.85 mi23029+7413546+5113546+5121562(Top 81%)12625(Top 83%)12625(Top 563%)
25.2M25.20 mi0.35 mi22987+4213532+1413532+1420502(Top 77%)12169(Top 80%)12169(Top 543%)
Finish26.22 mi1.02 mi22927+6013494+3813494+3820530(Top 77%)12206(Top 80%)12206(Top 545%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23172

Males

13715

M40-44

13715

5K→10K

3.1 - 6.2 mi

Top 94%
×5stories
+79ft-138ft

Overall

25075

Males

14567

M40-44

14567

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23172

Males

13715

M40-44

13715

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

23124

Males

13688

M40-44

13688

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22578

Males

13438

M40-44

13438

Half→25K

13.1 - 15.5 mi

Top 88%
×4stories
+66ft-88ft

Overall

23547

Males

13825

M40-44

13825

25K→30K

15.5 - 18.6 mi

Top 83%
×9stories
+181ft-148ft

Overall

22054

Males

13095

M40-44

13095

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

21401

Males

12742

M40-44

12742

20M→21M

20.0 - 21.0 mi

Top 79%
×8stories
+106ft-24ft

Overall

20963

Males

12506

M40-44

12506

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

22233

Males

13033

M40-44

13033

35K→23M

21.8 - 23.0 mi

Top 82%
×5stories
+23ft-63ft

Overall

21703

Males

12775

M40-44

12775

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

21748

Males

12755

M40-44

12755

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21562

Males

12625

M40-44

12625

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20502

Males

12169

M40-44

12169

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

20530

Males

12206

M40-44

12206

Passing Analysis

Category:
Athletes Passed
2311
Passed By
386
Net Change
+1925
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24852
5K → 10K119271-152#24852#25004
10K → 15K6093+606#25004#24398
15K → 20K3589+349#24398#24049
20K → Half882+86#24049#23963
Half → 25K13437+97#23963#23866
25K → 30K3234+319#23866#23547
30K → 20M1454+141#23547#23406
20M → 21M1274+123#23406#23283
21M → 35K5512+43#23283#23240
35K → 23M8310+73#23240#23167
23M → 24M728+64#23167#23103
24M → 40K806+74#23103#23029
40K → 25.2M453+42#23029#22987
25.2M → Finish7313+60#22987#22927
TOTALS2311386+1925
📊

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