Boston Marathon logo
BOSTON MARATHON 2023

Albert Crooker

Bib: 1838•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 5%
Division (M18-39)
#0 / 5285
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:01
Rank: #942
Start → 5K
19:01 | 6:07/mi
10K· 6.21 mi
37:39
Rank: #858 (+84)
5K → 10K
18:38 | 6:00/mi
15K· 9.32 mi
56:24
Rank: #835 (+23)
10K → 15K
18:45 | 6:02/mi
20K· 12.43 mi
1:15:33
Rank: #849 (-14)
15K → 20K
19:09 | 6:10/mi
Half· 13.11 mi
1:19:38
Rank: #842 (+7)
20K → Half
4:05 | 5:59/mi
25K· 15.53 mi
1:34:47
Rank: #875 (-33)
Half → 25K
15:09 | 6:15/mi
30K· 18.64 mi
1:53:57
Rank: #801 (+74)
25K → 30K
19:10 | 6:10/mi
20M
2:02:29
Rank: #802 (-1)
30K → 20M
8:32 | 6:17/mi
21M
2:09:08
Rank: #797 (+5)
20M → 21M
6:39 | 6:39/mi
35K· 21.75 mi
2:13:49
Rank: #803 (-6)
21M → 35K
4:41 | 6:16/mi
23M
2:22:01
Rank: #817 (-14)
35K → 23M
8:12 | 6:33/mi
24M
2:28:22
Rank: #828 (-11)
23M → 24M
6:21 | 6:21/mi
40K· 24.85 mi
2:33:48
Rank: #816 (+12)
24M → 40K
5:26 | 6:21/mi
25.2M
2:36:10
Rank: #812 (+4)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:42:24
Rank: #801 (+11)
25.2M → Finish
6:14 | 6:07/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
Time1:19:38
Pace6:04 /mi
2nd Half
Distance13.11 mi
Time1:22:46
Pace6:19 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2219:016:0719:01
6:07
-
10K
6.21 mi10:39:0037:396:0418:38
6:00
-0:07
15K
9.32 mi10:57:4556:246:0318:45
6:02
+0:02
20K
12.43 mi11:16:541:15:336:0519:09
6:10
+0:08
Half
13.11 mi11:20:591:19:386:044:05
5:59
-0:11
25K
15.53 mi11:36:081:34:476:0615:09
6:15
+0:16
30K
18.64 mi11:55:181:53:576:0719:10
6:10
-0:05
20M
20.00 mi12:03:502:02:296:078:32
6:17
+0:07
21M
21.00 mi12:10:292:09:086:096:39
6:39
+0:22
35K
21.75 mi12:15:102:13:496:094:41
6:16
-0:23
23M
23.00 mi12:23:222:22:016:108:12
6:33
+0:17
24M
24.00 mi12:29:432:28:226:116:21
6:21
-0:12
40K
24.85 mi12:35:092:33:486:115:26
6:21
0:00
25.2M
25.20 mi12:37:312:36:106:122:22
6:52
+0:31
Finish
26.22 mi12:43:452:42:246:126:14
6:07
-0:45

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

5:59 /mi

Average Pace

6:12 /mi

Slowest Pace

6:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:23

94% of race

Time at Steady Pace

9:01

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:12 /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 mi10:20:2219:016:0719:01
6:07
#942
10K
6.21 mi10:39:0037:396:0418:38
6:00
#858
15K
9.32 mi10:57:4556:246:0318:45
6:02
#835
20K
12.43 mi11:16:541:15:336:0519:09
6:10
#849
Half
13.11 mi11:20:591:19:386:044:05
5:59
#842
25K
15.53 mi11:36:081:34:476:0615:09
6:15
#875
30K
18.64 mi11:55:181:53:576:0719:10
6:10
#801
20M
20.00 mi12:03:502:02:296:078:32
6:17
#802
21M
21.00 mi12:10:292:09:086:096:39
6:39
#797
35K
21.75 mi12:15:102:13:496:094:41
6:16
#803
23M
23.00 mi12:23:222:22:016:108:12
6:33
#817
24M
24.00 mi12:29:432:28:226:116:21
6:21
#828
40K
24.85 mi12:35:092:33:486:115:26
6:21
#816
25.2M
25.20 mi12:37:312:36:106:122:22
6:52
#812
Finish
26.22 mi12:43:452:42:246:126:14
6:07
#801
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi942886886795(Top 3%)749(Top 5%)749(Top 14%)
10K6.21 mi3.10 mi858+84808+78808+78787(Top 3%)742(Top 5%)742(Top 14%)
15K9.32 mi3.11 mi835+23787+21787+21795(Top 3%)749(Top 5%)749(Top 14%)
20K12.43 mi3.11 mi849-14802-15802-15945(Top 4%)897(Top 6%)897(Top 17%)
Half13.11 mi0.68 mi842+7796+6796+6722(Top 3%)681(Top 4%)681(Top 13%)
25K15.53 mi2.42 mi875-33828-32828-321126(Top 4%)1073(Top 7%)1073(Top 20%)
30K18.64 mi3.11 mi801+74758+70758+70627(Top 2%)591(Top 4%)591(Top 11%)
20M20.00 mi1.36 mi802-1760-2760-2823(Top 3%)783(Top 5%)783(Top 15%)
21M21.00 mi1.00 mi797+5754+6754+6961(Top 4%)913(Top 6%)913(Top 17%)
35K21.75 mi0.75 mi803-6759-5759-51406(Top 5%)1332(Top 9%)1332(Top 25%)
23M23.00 mi1.25 mi817-14773-14773-141581(Top 6%)1501(Top 10%)1501(Top 28%)
24M24.00 mi1.00 mi828-11783-10783-101539(Top 6%)1455(Top 10%)1455(Top 28%)
40K24.85 mi0.85 mi816+12771+12771+121033(Top 4%)976(Top 6%)976(Top 18%)
25.2M25.20 mi0.35 mi812+4768+3768+31292(Top 5%)1222(Top 8%)1222(Top 23%)
Finish26.22 mi1.02 mi801+11757+11757+111027(Top 4%)976(Top 6%)976(Top 18%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

795

Males

749

M18-39

749

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

787

Males

742

M18-39

742

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

795

Males

749

M18-39

749

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

945

Males

897

M18-39

897

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

722

Males

681

M18-39

681

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1126

Males

1073

M18-39

1073

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

627

Males

591

M18-39

591

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

823

Males

783

M18-39

783

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

961

Males

913

M18-39

913

21M→35K

21.0 - 21.8 mi

Top 5%
×7stories
+17ft-86ft

Overall

1406

Males

1332

M18-39

1332

35K→23M

21.8 - 23.0 mi

Top 6%
×5stories
+23ft-63ft

Overall

1581

Males

1501

M18-39

1501

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1539

Males

1455

M18-39

1455

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1033

Males

976

M18-39

976

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1292

Males

1222

M18-39

1222

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1027

Males

976

M18-39

976

Passing Analysis

Category:
Athletes Passed
355
Passed By
214
Net Change
+141
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#942
5K → 10K9915+84#942#858
10K → 15K3613+23#858#835
15K → 20K2236-14#835#849
20K → Half103+7#849#842
Half → 25K1649-33#842#875
25K → 30K751+74#875#801
30K → 20M1314-1#801#802
20M → 21M149+5#802#797
21M → 35K410-6#797#803
35K → 23M1327-14#803#817
23M → 24M718-11#817#828
24M → 40K175+12#828#816
40K → 25.2M84+4#816#812
25.2M → Finish2110+11#812#801
TOTALS355214+141
📊

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