Boston Marathon logo
BOSTON MARATHON 2023

Craig Lambert

Bib: 4484•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 21%
Masters (Masters Men)
#0 / 9891
Top 8%
Division (M50-54)
#0 / 2052
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:04
Rank: #4469
Start → 5K
21:04 | 6:47/mi
10K· 6.21 mi
42:06
Rank: #4737 (-268)
5K → 10K
21:02 | 6:46/mi
15K· 9.32 mi
1:03:09
Rank: #4744 (-7)
10K → 15K
21:03 | 6:47/mi
20K· 12.43 mi
1:24:19
Rank: #4684 (+60)
15K → 20K
21:10 | 6:49/mi
Half· 13.11 mi
1:28:55
Rank: #4674 (+10)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:45:19
Rank: #4498 (+176)
Half → 25K
16:24 | 6:46/mi
30K· 18.64 mi
2:06:43
Rank: #4295 (+203)
25K → 30K
21:24 | 6:53/mi
20M
2:15:58
Rank: #4138 (+157)
30K → 20M
9:15 | 6:48/mi
21M
2:23:09
Rank: #4016 (+122)
20M → 21M
7:11 | 7:11/mi
35K· 21.75 mi
2:27:59
Rank: #3911 (+105)
21M → 35K
4:50 | 6:28/mi
23M
2:36:22
Rank: #3731 (+180)
35K → 23M
8:23 | 6:42/mi
24M
2:42:47
Rank: #3570 (+161)
23M → 24M
6:25 | 6:25/mi
40K· 24.85 mi
2:48:24
Rank: #3458 (+112)
24M → 40K
5:37 | 6:34/mi
25.2M
2:50:49
Rank: #3419 (+39)
40K → 25.2M
2:25 | 7:00/mi
Finish· 26.22 mi
2:57:23
Rank: #3299 (+120)
25.2M → Finish
6:34 | 6:27/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⚖️ Balanced
Distance13.11 mi
Time1:28:55
Pace6:47 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:28:28
Pace6:45 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3621:046:4721:04
6:47
-
10K
6.21 mi10:43:3842:066:4721:02
6:46
-0:01
15K
9.32 mi11:04:411:03:096:4721:03
6:47
+0:01
20K
12.43 mi11:25:511:24:196:4721:10
6:49
+0:02
Half
13.11 mi11:30:271:28:556:474:36
6:45
-0:04
25K
15.53 mi11:46:511:45:196:4716:24
6:46
+0:01
30K
18.64 mi12:08:152:06:436:4821:24
6:53
+0:07
20M
20.00 mi12:17:302:15:586:489:15
6:48
-0:05
21M
21.00 mi12:24:412:23:096:497:11
7:11
+0:23
35K
21.75 mi12:29:312:27:596:484:50
6:28
-0:43
23M
23.00 mi12:37:542:36:226:488:23
6:42
+0:14
24M
24.00 mi12:44:192:42:476:476:25
6:25
-0:17
40K
24.85 mi12:49:562:48:246:475:37
6:34
+0:09
25.2M
25.20 mi12:52:212:50:496:472:25
7:00
+0:26
Finish
26.22 mi12:58:552:57:236:466:34
6:27
-0:33

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

6:25 /mi

Average Pace

6:46 /mi

Slowest Pace

7:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:12

96% of race

Time at Steady Pace

7:11

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:46 /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 mi10:22:3621:046:4721:04
6:47
#4469
10K
6.21 mi10:43:3842:066:4721:02
6:46
#4737
15K
9.32 mi11:04:411:03:096:4721:03
6:47
#4744
20K
12.43 mi11:25:511:24:196:4721:10
6:49
#4684
Half
13.11 mi11:30:271:28:556:474:36
6:45
#4674
25K
15.53 mi11:46:511:45:196:4716:24
6:46
#4498
30K
18.64 mi12:08:152:06:436:4821:24
6:53
#4295
20M
20.00 mi12:17:302:15:586:489:15
6:48
#4138
21M
21.00 mi12:24:412:23:096:497:11
7:11
#4016
35K
21.75 mi12:29:312:27:596:484:50
6:28
#3911
23M
23.00 mi12:37:542:36:226:488:23
6:42
#3731
24M
24.00 mi12:44:192:42:476:476:25
6:25
#3570
40K
24.85 mi12:49:562:48:246:475:37
6:34
#3458
25.2M
25.20 mi12:52:212:50:496:472:25
7:00
#3419
Finish
26.22 mi12:58:552:57:236:466:34
6:27
#3299
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi4469417141714846(Top 18%)4507(Top 30%)4507(Top 220%)
10K6.21 mi3.10 mi4737-2684413-2424413-2424972(Top 19%)4604(Top 30%)4604(Top 224%)
15K9.32 mi3.11 mi4744-74416-34416-34846(Top 18%)4507(Top 30%)4507(Top 220%)
20K12.43 mi3.11 mi4684+604370+464370+464535(Top 17%)4224(Top 28%)4224(Top 206%)
Half13.11 mi0.68 mi4674+104361+94361+94653(Top 17%)4315(Top 28%)4315(Top 210%)
25K15.53 mi2.42 mi4498+1764204+1574204+1573831(Top 14%)3603(Top 24%)3603(Top 176%)
30K18.64 mi3.11 mi4295+2034026+1784026+1783565(Top 13%)3347(Top 22%)3347(Top 163%)
20M20.00 mi1.36 mi4138+1573883+1433883+1432868(Top 11%)2703(Top 18%)2703(Top 132%)
21M21.00 mi1.00 mi4016+1223771+1123771+1123001(Top 11%)2812(Top 19%)2812(Top 137%)
35K21.75 mi0.75 mi3911+1053677+943677+942262(Top 8%)2149(Top 14%)2149(Top 105%)
23M23.00 mi1.25 mi3731+1803515+1623515+1622179(Top 8%)2059(Top 14%)2059(Top 100%)
24M24.00 mi1.00 mi3570+1613372+1433372+1431768(Top 7%)1669(Top 11%)1669(Top 81%)
40K24.85 mi0.85 mi3458+1123266+1063266+1061815(Top 7%)1710(Top 11%)1710(Top 83%)
25.2M25.20 mi0.35 mi3419+393229+373229+371802(Top 7%)1695(Top 11%)1695(Top 83%)
Finish26.22 mi1.02 mi3299+1203119+1103119+1102226(Top 8%)2066(Top 14%)2066(Top 101%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

4846

Males

4507

M50-54

4507

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4972

Males

4604

M50-54

4604

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

4846

Males

4507

M50-54

4507

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4535

Males

4224

M50-54

4224

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4653

Males

4315

M50-54

4315

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3831

Males

3603

M50-54

3603

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3565

Males

3347

M50-54

3347

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2868

Males

2703

M50-54

2703

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3001

Males

2812

M50-54

2812

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2262

Males

2149

M50-54

2149

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2179

Males

2059

M50-54

2059

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1768

Males

1669

M50-54

1669

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1815

Males

1710

M50-54

1710

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1802

Males

1695

M50-54

1695

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2226

Males

2066

M50-54

2066

Passing Analysis

Category:
Athletes Passed
1832
Passed By
662
Net Change
+1170
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4469
5K → 10K113381-268#4469#4737
10K → 15K110117-7#4737#4744
15K → 20K12666+60#4744#4684
20K → Half2313+10#4684#4674
Half → 25K19317+176#4674#4498
25K → 30K23532+203#4498#4295
30K → 20M1636+157#4295#4138
20M → 21M13614+122#4138#4016
21M → 35K1105+105#4016#3911
35K → 23M1800+180#3911#3731
23M → 24M1632+161#3731#3570
24M → 40K1120+112#3570#3458
40K → 25.2M423+39#3458#3419
25.2M → Finish1266+120#3419#3299
TOTALS1832662+1170
📊

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