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BOSTON MARATHON 2023

Alexander Ring

Bib: 12009 M GB

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 38%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 42%
Division (M50-54)
#0 / 2052
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:42/mi
23:54
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:28/mi
47:06
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:34/mi
1:10:36
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:43/mi
1:34:36
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:39/mi
1:39:49
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:47/mi
1:58:41
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:01/mi
2:23:36
↑ 181↓ 1480.2%
138 ft elev
20M
8:02/mi
2:34:31
↑ 64↓ 500.2%
148 ft elev
21M
8:15/mi
2:42:46
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:49/mi
2:48:37
↑ 17↓ 861.7%
156 ft elev
23M
7:58/mi
2:58:36
↑ 23↓ 630.6%
116 ft elev
24M
7:43/mi
3:06:19
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:48/mi
3:12:59
↓ 200.3%
20 ft elev
25.2M
8:30/mi
3:15:55
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:28/mi
3:23:32
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:39:497:37 /mi⚡ faster
2nd Half
1:43:437:55 /mi+3.9%
Positive split — 3.9% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4023:547:4223:54
7:42
-
10K
6.21 mi11:14:5247:067:3523:12
7:28
-0:14
15K
9.32 mi11:38:221:10:367:3423:30
7:34
+0:06
20K
12.43 mi12:02:221:34:367:3724:00
7:43
+0:09
Half
13.11 mi12:07:351:39:497:375:13
7:39
-0:04
25K
15.53 mi12:26:271:58:417:3818:52
7:47
+0:08
30K
18.64 mi12:51:222:23:367:4224:55
8:01
+0:14
20M
20.00 mi13:02:172:34:317:4410:55
8:02
+0:01
21M
21.00 mi13:10:322:42:467:458:15
8:15
+0:13
35K
21.75 mi13:16:232:48:377:455:51
7:49
-0:26
23M
23.00 mi13:26:222:58:367:469:59
7:58
+0:09
24M
24.00 mi13:34:053:06:197:467:43
7:43
-0:15
40K
24.85 mi13:40:453:12:597:466:40
7:48
+0:05
25.2M
25.20 mi13:43:413:15:557:462:56
8:30
+0:42
Finish
26.22 mi13:51:183:23:327:467:37
7:28
-1:02

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

7:28 /mi

Average Pace

7:46 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

3:12:21

95% of race

Time at Steady Pace

11:11

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:46 /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 mi10:51:4023:547:4223:54
7:42
#11362
10K
6.21 mi11:14:5247:067:3523:12
7:28
#10734
15K
9.32 mi11:38:221:10:367:3423:30
7:34
#10703
20K
12.43 mi12:02:221:34:367:3724:00
7:43
#10806
Half
13.11 mi12:07:351:39:497:375:13
7:39
#10845
25K
15.53 mi12:26:271:58:417:3818:52
7:47
#10815
30K
18.64 mi12:51:222:23:367:4224:55
8:01
#10806
20M
20.00 mi13:02:172:34:317:4410:55
8:02
#10743
21M
21.00 mi13:10:322:42:467:458:15
8:15
#10620
35K
21.75 mi13:16:232:48:377:455:51
7:49
#10595
23M
23.00 mi13:26:222:58:367:469:59
7:58
#10524
24M
24.00 mi13:34:053:06:197:467:43
7:43
#10447
40K
24.85 mi13:40:453:12:597:466:40
7:48
#10348
25.2M
25.20 mi13:43:413:15:557:462:56
8:30
#10323
Finish
26.22 mi13:51:183:23:327:467:37
7:28
#10209
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi11362882688261068784958495
10K6.21 mi3.10 mi10734+6288526+3008526+3001019682738273
15K9.32 mi3.11 mi10703+318519+78519+71068784958495
20K12.43 mi3.11 mi10806-1038543-248543-241109986248624
Half13.11 mi0.68 mi10845-398568-258568-251133687698769
25K15.53 mi2.42 mi10815+308542+268542+261093484688468
30K18.64 mi3.11 mi10806+98487+558487+551104983678367
20M20.00 mi1.36 mi10743+638423+648423+641049479957995
21M21.00 mi1.00 mi10620+1238344+798344+79889870127012
35K21.75 mi0.75 mi10595+258309+358309+351076679897989
23M23.00 mi1.25 mi10524+718248+618248+61956172657265
24M24.00 mi1.00 mi10447+778177+718177+71918269856985
40K24.85 mi0.85 mi10348+998106+718106+71865766416641
25.2M25.20 mi0.35 mi10323+258079+278079+27951170377037
Finish26.22 mi1.02 mi10209+1147996+837996+83836763836383

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10687

Males

8495

M50-54

8495

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10196

Males

8273

M50-54

8273

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10687

Males

8495

M50-54

8495

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11099

Males

8624

M50-54

8624

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

11336

Males

8769

M50-54

8769

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10934

Males

8468

M50-54

8468

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

11049

Males

8367

M50-54

8367

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

10494

Males

7995

M50-54

7995

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8898

Males

7012

M50-54

7012

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10766

Males

7989

M50-54

7989

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9561

Males

7265

M50-54

7265

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9182

Males

6985

M50-54

6985

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8657

Males

6641

M50-54

6641

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9511

Males

7037

M50-54

7037

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8367

Males

6383

M50-54

6383

Passing Analysis

Category:
Athletes Passed
2236*
Passed By
1083
Net Change
+1153
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11362
5K → 10K71991+628#11362#10734
10K → 15K201170+31#10734#10703
15K → 20K124227-103#10703#10806
20K → Half1049-39#10806#10845
Half → 25K142112+30#10845#10815
25K → 30K197188+9#10815#10806
30K → 20M105*42+63#10806#10743
20M → 21M14118+123#10743#10620
21M → 35K6540+25#10620#10595
35K → 23M11544+71#10595#10524
23M → 24M11134+77#10524#10447
24M → 40K12425+99#10447#10348
40K → 25.2M4621+25#10348#10323
25.2M → Finish13622+114#10323#10209
TOTALS2236*1083+1153

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing