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BOSTON MARATHON 2023

Jeff Alexander

Bib: 9470•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 20%
Gender (Male)
#0 / 15176
Top 31%
Masters (Masters Men)
#0 / 9891
Top 17%
Division (M50-54)
#0 / 2052
Top 12%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:48
Rank: #6336
Start → 5K
21:48 | 7:01/mi
10K· 6.21 mi
43:11
Rank: #6188 (+148)
5K → 10K
21:23 | 6:53/mi
15K· 9.32 mi
1:04:55
Rank: #6282 (-94)
10K → 15K
21:44 | 7:00/mi
20K· 12.43 mi
1:27:43
Rank: #6682 (-400)
15K → 20K
22:48 | 7:20/mi
Half· 13.11 mi
1:32:26
Rank: #6644 (+38)
20K → Half
4:43 | 6:55/mi
25K· 15.53 mi
1:49:31
Rank: #6498 (+146)
Half → 25K
17:05 | 7:03/mi
30K· 18.64 mi
2:11:50
Rank: #6249 (+249)
25K → 30K
22:19 | 7:11/mi
20M
2:21:28
Rank: #6081 (+168)
30K → 20M
9:38 | 7:05/mi
21M
2:28:56
Rank: #5937 (+144)
20M → 21M
7:28 | 7:28/mi
35K· 21.75 mi
2:34:03
Rank: #5864 (+73)
21M → 35K
5:07 | 6:50/mi
23M
2:42:48
Rank: #5674 (+190)
35K → 23M
8:45 | 6:59/mi
24M
2:49:26
Rank: #5512 (+162)
23M → 24M
6:38 | 6:38/mi
40K· 24.85 mi
2:55:19
Rank: #5365 (+147)
24M → 40K
5:53 | 6:53/mi
25.2M
2:57:51
Rank: #5299 (+66)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
3:04:45
Rank: #5203 (+96)
25.2M → Finish
6:54 | 6:46/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:32:26
Pace7:03 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:32:19
Pace7:03 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:2621:487:0121:48
7:01
-
10K
6.21 mi11:08:4943:116:5721:23
6:53
-0:08
15K
9.32 mi11:30:331:04:556:5821:44
7:00
+0:07
20K
12.43 mi11:53:211:27:437:0322:48
7:20
+0:20
Half
13.11 mi11:58:041:32:267:034:43
6:55
-0:25
25K
15.53 mi12:15:091:49:317:0317:05
7:03
+0:08
30K
18.64 mi12:37:282:11:507:0422:19
7:11
+0:08
20M
20.00 mi12:47:062:21:287:049:38
7:05
-0:06
21M
21.00 mi12:54:342:28:567:067:28
7:28
+0:23
35K
21.75 mi12:59:412:34:037:055:07
6:50
-0:38
23M
23.00 mi13:08:262:42:487:058:45
6:59
+0:09
24M
24.00 mi13:15:042:49:267:046:38
6:38
-0:21
40K
24.85 mi13:20:572:55:197:035:53
6:53
+0:15
25.2M
25.20 mi13:23:292:57:517:032:32
7:21
+0:28
Finish
26.22 mi13:30:233:04:457:036:54
6:46
-0:35

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

6:38 /mi

Average Pace

7:03 /mi

Slowest Pace

7:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:57

82% of race

Time at Steady Pace

32:48

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:03 /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 mi10:47:2621:487:0121:48
7:01
#6336
10K
6.21 mi11:08:4943:116:5721:23
6:53
#6188
15K
9.32 mi11:30:331:04:556:5821:44
7:00
#6282
20K
12.43 mi11:53:211:27:437:0322:48
7:20
#6682
Half
13.11 mi11:58:041:32:267:034:43
6:55
#6644
25K
15.53 mi12:15:091:49:317:0317:05
7:03
#6498
30K
18.64 mi12:37:282:11:507:0422:19
7:11
#6249
20M
20.00 mi12:47:062:21:287:049:38
7:05
#6081
21M
21.00 mi12:54:342:28:567:067:28
7:28
#5937
35K
21.75 mi12:59:412:34:037:055:07
6:50
#5864
23M
23.00 mi13:08:262:42:487:058:45
6:59
#5674
24M
24.00 mi13:15:042:49:267:046:38
6:38
#5512
40K
24.85 mi13:20:572:55:197:035:53
6:53
#5365
25.2M
25.20 mi13:23:292:57:517:032:32
7:21
#5299
Finish
26.22 mi13:30:233:04:457:036:54
6:46
#5203
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi6336576557656512(Top 24%)5866(Top 39%)5866(Top 286%)
10K6.21 mi3.10 mi6188+1485628+1375628+1375995(Top 23%)5458(Top 36%)5458(Top 266%)
15K9.32 mi3.11 mi6282-945696-685696-686512(Top 24%)5866(Top 39%)5866(Top 286%)
20K12.43 mi3.11 mi6682-4005999-3035999-3038057(Top 30%)6921(Top 46%)6921(Top 337%)
Half13.11 mi0.68 mi6644+385967+325967+326032(Top 23%)5502(Top 36%)5502(Top 268%)
25K15.53 mi2.42 mi6498+1465849+1185849+1185819(Top 22%)5306(Top 35%)5306(Top 259%)
30K18.64 mi3.11 mi6249+2495651+1985651+1985388(Top 20%)4910(Top 32%)4910(Top 239%)
20M20.00 mi1.36 mi6081+1685516+1355516+1354569(Top 17%)4194(Top 28%)4194(Top 204%)
21M21.00 mi1.00 mi5937+1445390+1265390+1264431(Top 17%)4045(Top 27%)4045(Top 197%)
35K21.75 mi0.75 mi5864+735329+615329+614464(Top 17%)4082(Top 27%)4082(Top 199%)
23M23.00 mi1.25 mi5674+1905174+1555174+1553750(Top 14%)3464(Top 23%)3464(Top 169%)
24M24.00 mi1.00 mi5512+1625034+1405034+1402785(Top 10%)2594(Top 17%)2594(Top 126%)
40K24.85 mi0.85 mi5365+1474902+1324902+1323251(Top 12%)2981(Top 20%)2981(Top 145%)
25.2M25.20 mi0.35 mi5299+664843+594843+593215(Top 12%)2938(Top 19%)2938(Top 143%)
Finish26.22 mi1.02 mi5203+964761+824761+823920(Top 15%)3476(Top 23%)3476(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 24%
×21stories
+97ft-345ft

Overall

6512

Males

5866

M50-54

5866

5K→10K

3.1 - 6.2 mi

Top 23%
×5stories
+79ft-138ft

Overall

5995

Males

5458

M50-54

5458

10K→15K

6.2 - 9.3 mi

Top 24%
×3stories
+67ft-78ft

Overall

6512

Males

5866

M50-54

5866

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8057

Males

6921

M50-54

6921

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6032

Males

5502

M50-54

5502

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5819

Males

5306

M50-54

5306

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5388

Males

4910

M50-54

4910

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4569

Males

4194

M50-54

4194

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4431

Males

4045

M50-54

4045

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4464

Males

4082

M50-54

4082

35K→23M

21.8 - 23.0 mi

Top 14%
×5stories
+23ft-63ft

Overall

3750

Males

3464

M50-54

3464

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2785

Males

2594

M50-54

2594

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3251

Males

2981

M50-54

2981

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3215

Males

2938

M50-54

2938

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

3920

Males

3476

M50-54

3476

Passing Analysis

Category:
Athletes Passed
1924
Passed By
791
Net Change
+1133
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6336
5K → 10K269121+148#6336#6188
10K → 15K77171-94#6188#6282
15K → 20K28428-400#6282#6682
20K → Half424+38#6682#6644
Half → 25K16519+146#6644#6498
25K → 30K26617+249#6498#6249
30K → 20M1702+168#6249#6081
20M → 21M1517+144#6081#5937
21M → 35K796+73#5937#5864
35K → 23M1911+190#5864#5674
23M → 24M1642+162#5674#5512
24M → 40K1503+147#5512#5365
40K → 25.2M660+66#5365#5299
25.2M → Finish10610+96#5299#5203
TOTALS1924791+1133
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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