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BOSTON MARATHON 2023

Charles Stack

Bib: 9868•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 41%
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
22:54
Rank: #8596
Start → 5K
22:54 | 7:22/mi
10K· 6.21 mi
46:31
Rank: #9887 (-1291)
5K → 10K
23:37 | 7:36/mi
15K· 9.32 mi
1:10:13
Rank: #10361 (-474)
10K → 15K
23:42 | 7:38/mi
20K· 12.43 mi
1:34:09
Rank: #10480 (-119)
15K → 20K
23:56 | 7:42/mi
Half· 13.11 mi
1:39:21
Rank: #10524 (-44)
20K → Half
5:12 | 7:37/mi
25K· 15.53 mi
1:58:09
Rank: #10528 (-4)
Half → 25K
18:48 | 7:45/mi
30K· 18.64 mi
2:22:39
Rank: #10374 (+154)
25K → 30K
24:30 | 7:53/mi
20M
2:33:32
Rank: #10366 (+8)
30K → 20M
10:53 | 8:01/mi
21M
2:41:50
Rank: #10269 (+97)
20M → 21M
8:18 | 8:18/mi
35K· 21.75 mi
2:47:51
Rank: #10336 (-67)
21M → 35K
6:01 | 8:03/mi
23M
2:57:54
Rank: #10280 (+56)
35K → 23M
10:03 | 8:02/mi
24M
3:05:35
Rank: #10197 (+83)
23M → 24M
7:41 | 7:41/mi
40K· 24.85 mi
3:12:04
Rank: #10053 (+144)
24M → 40K
6:29 | 7:35/mi
25.2M
3:14:58
Rank: #10012 (+41)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:22:33
Rank: #9900 (+112)
25.2M → Finish
7:35 | 7:26/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:21
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:43:12
Pace7:52 /mi
📊Positive Split: 3.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:2122:547:2222:54
7:22
-
10K
6.21 mi11:11:5846:317:2923:37
7:36
+0:14
15K
9.32 mi11:35:401:10:137:3223:42
7:38
+0:02
20K
12.43 mi11:59:361:34:097:3523:56
7:42
+0:04
Half
13.11 mi12:04:481:39:217:355:12
7:37
-0:05
25K
15.53 mi12:23:361:58:097:3618:48
7:45
+0:08
30K
18.64 mi12:48:062:22:397:3924:30
7:53
+0:08
20M
20.00 mi12:58:592:33:327:4110:53
8:01
+0:08
21M
21.00 mi13:07:172:41:507:428:18
8:18
+0:17
35K
21.75 mi13:13:182:47:517:436:01
8:03
-0:15
23M
23.00 mi13:23:212:57:547:4410:03
8:02
-0:01
24M
24.00 mi13:31:023:05:357:447:41
7:41
-0:21
40K
24.85 mi13:37:313:12:047:446:29
7:35
-0:06
25.2M
25.20 mi13:40:253:14:587:442:54
8:25
+0:50
Finish
26.22 mi13:48:003:22:337:447:35
7:26
-0:59

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

7:22 /mi

Average Pace

7:44 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:21

94% of race

Time at Steady Pace

11:12

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:44 /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 mi10:48:2122:547:2222:54
7:22
#8596
10K
6.21 mi11:11:5846:317:2923:37
7:36
#9887
15K
9.32 mi11:35:401:10:137:3223:42
7:38
#10361
20K
12.43 mi11:59:361:34:097:3523:56
7:42
#10480
Half
13.11 mi12:04:481:39:217:355:12
7:37
#10524
25K
15.53 mi12:23:361:58:097:3618:48
7:45
#10528
30K
18.64 mi12:48:062:22:397:3924:30
7:53
#10374
20M
20.00 mi12:58:592:33:327:4110:53
8:01
#10366
21M
21.00 mi13:07:172:41:507:428:18
8:18
#10269
35K
21.75 mi13:13:182:47:517:436:01
8:03
#10336
23M
23.00 mi13:23:212:57:547:4410:03
8:02
#10280
24M
24.00 mi13:31:023:05:357:447:41
7:41
#10197
40K
24.85 mi13:37:313:12:047:446:29
7:35
#10053
25.2M
25.20 mi13:40:253:14:587:442:54
8:25
#10012
Finish
26.22 mi13:48:003:22:337:447:35
7:26
#9900
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi85967356735611231(Top 42%)8738(Top 58%)8738(Top 390%)
10K6.21 mi3.10 mi9887-12918088-7328088-73211333(Top 43%)8801(Top 58%)8801(Top 393%)
15K9.32 mi3.11 mi10361-4748356-2688356-26811231(Top 42%)8738(Top 58%)8738(Top 390%)
20K12.43 mi3.11 mi10480-1198406-508406-5010932(Top 41%)8539(Top 56%)8539(Top 381%)
Half13.11 mi0.68 mi10524-448431-258431-2511129(Top 42%)8661(Top 57%)8661(Top 386%)
25K15.53 mi2.42 mi10528-48405+268405+2610712(Top 40%)8348(Top 55%)8348(Top 373%)
30K18.64 mi3.11 mi10374+1548272+1338272+13310016(Top 38%)7835(Top 52%)7835(Top 350%)
20M20.00 mi1.36 mi10366+88250+228250+2210299(Top 39%)7912(Top 52%)7912(Top 353%)
21M21.00 mi1.00 mi10269+978173+778173+779225(Top 35%)7197(Top 47%)7197(Top 321%)
35K21.75 mi0.75 mi10336-678191-188191-1812372(Top 46%)8706(Top 57%)8706(Top 388%)
23M23.00 mi1.25 mi10280+568133+588133+589915(Top 37%)7430(Top 49%)7430(Top 332%)
24M24.00 mi1.00 mi10197+838062+718062+718959(Top 34%)6873(Top 45%)6873(Top 307%)
40K24.85 mi0.85 mi10053+1447956+1067956+1067219(Top 27%)5767(Top 38%)5767(Top 257%)
25.2M25.20 mi0.35 mi10012+417917+397917+398931(Top 34%)6704(Top 44%)6704(Top 299%)
Finish26.22 mi1.02 mi9900+1127839+787839+788077(Top 30%)6213(Top 41%)6213(Top 277%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11231

Males

8738

M40-44

8738

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11333

Males

8801

M40-44

8801

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11231

Males

8738

M40-44

8738

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

10932

Males

8539

M40-44

8539

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11129

Males

8661

M40-44

8661

Half→25K

13.1 - 15.5 mi

Top 40%
×4stories
+66ft-88ft

Overall

10712

Males

8348

M40-44

8348

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10016

Males

7835

M40-44

7835

30K→20M

18.6 - 20.0 mi

Top 39%
×5stories
+64ft-50ft

Overall

10299

Males

7912

M40-44

7912

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9225

Males

7197

M40-44

7197

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12372

Males

8706

M40-44

8706

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

9915

Males

7430

M40-44

7430

23M→24M

23.0 - 24.0 mi

Top 34%
×6stories
+12ft-82ft

Overall

8959

Males

6873

M40-44

6873

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7219

Males

5767

M40-44

5767

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8931

Males

6704

M40-44

6704

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2stories
+22ft-21ft

Overall

8077

Males

6213

M40-44

6213

Passing Analysis

Category:
Athletes Passed
1391*
Passed By
2693
Net Change
-1304
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8596
5K → 10K281319-1291#8596#9887
10K → 15K59531-474#9887#10361
15K → 20K112231-119#10361#10480
20K → Half1660-44#10480#10524
Half → 25K126130-4#10524#10528
25K → 30K24288+154#10528#10374
30K → 20M71*63+8#10374#10366
20M → 21M13841+97#10366#10269
21M → 35K2895-67#10269#10336
35K → 23M11357+56#10336#10280
23M → 24M10926+83#10280#10197
24M → 40K1539+144#10197#10053
40K → 25.2M54*13+41#10053#10012
25.2M → Finish142*30+112#10012#9900
TOTALS1391*2693-1304

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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