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BOSTON MARATHON 2023

Chelsea Benson

Bib: 16384•F

PA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 31%
Gender (Female)
#0 / 11423
Top 12%
Division (F18-39)
#0 / 4884
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:56
Rank: #11481
Start → 5K
23:56 | 7:42/mi
10K· 6.21 mi
46:48
Rank: #10320 (+1161)
5K → 10K
22:52 | 7:22/mi
15K· 9.32 mi
1:09:45
Rank: #9889 (+431)
10K → 15K
22:57 | 7:23/mi
20K· 12.43 mi
1:32:39
Rank: #9450 (+439)
15K → 20K
22:54 | 7:22/mi
Half· 13.11 mi
1:37:41
Rank: #9439 (+11)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:55:52
Rank: #9306 (+133)
Half → 25K
18:11 | 7:30/mi
30K· 18.64 mi
2:19:06
Rank: #8848 (+458)
25K → 30K
23:14 | 7:29/mi
20M
2:29:22
Rank: #8704 (+144)
30K → 20M
10:16 | 7:33/mi
21M
2:37:26
Rank: #8614 (+90)
20M → 21M
8:04 | 8:04/mi
35K· 21.75 mi
2:42:57
Rank: #8585 (+29)
21M → 35K
5:31 | 7:22/mi
23M
2:52:38
Rank: #8521 (+64)
35K → 23M
9:41 | 7:44/mi
24M
3:00:02
Rank: #8411 (+110)
23M → 24M
7:24 | 7:24/mi
40K· 24.85 mi
3:06:35
Rank: #8366 (+45)
24M → 40K
6:33 | 7:40/mi
25.2M
3:09:27
Rank: #8342 (+24)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:16:57
Rank: #8282 (+60)
25.2M → Finish
7:30 | 7:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:41
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:39:16
Pace7:34 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:1123:567:4223:56
7:42
-
10K
6.21 mi11:37:0346:487:3222:52
7:22
-0:20
15K
9.32 mi12:00:001:09:457:2922:57
7:23
+0:01
20K
12.43 mi12:22:541:32:397:2722:54
7:22
-0:01
Half
13.11 mi12:27:561:37:417:275:02
7:23
+0:01
25K
15.53 mi12:46:071:55:527:2818:11
7:30
+0:07
30K
18.64 mi13:09:212:19:067:2823:14
7:29
-0:01
20M
20.00 mi13:19:372:29:227:2810:16
7:33
+0:04
21M
21.00 mi13:27:412:37:267:308:04
8:04
+0:31
35K
21.75 mi13:33:122:42:577:305:31
7:22
-0:42
23M
23.00 mi13:42:532:52:387:309:41
7:44
+0:22
24M
24.00 mi13:50:173:00:027:307:24
7:24
-0:20
40K
24.85 mi13:56:503:06:357:306:33
7:40
+0:16
25.2M
25.20 mi13:59:423:09:277:312:52
8:19
+0:39
Finish
26.22 mi14:07:123:16:577:317:30
7:22
-0:57

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

7:31 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:05

99% of race

Time at Steady Pace

2:52

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi11:14:1123:567:4223:56
7:42
#11481
10K
6.21 mi11:37:0346:487:3222:52
7:22
#10320
15K
9.32 mi12:00:001:09:457:2922:57
7:23
#9889
20K
12.43 mi12:22:541:32:397:2722:54
7:22
#9450
Half
13.11 mi12:27:561:37:417:275:02
7:23
#9439
25K
15.53 mi12:46:071:55:527:2818:11
7:30
#9306
30K
18.64 mi13:09:212:19:067:2823:14
7:29
#8848
20M
20.00 mi13:19:372:29:227:2810:16
7:33
#8704
21M
21.00 mi13:27:412:37:267:308:04
8:04
#8614
35K
21.75 mi13:33:122:42:577:305:31
7:22
#8585
23M
23.00 mi13:42:532:52:387:309:41
7:44
#8521
24M
24.00 mi13:50:173:00:027:307:24
7:24
#8411
40K
24.85 mi13:56:503:06:357:306:33
7:40
#8366
25.2M
25.20 mi13:59:423:09:277:312:52
8:19
#8342
Finish
26.22 mi14:07:123:16:577:317:30
7:22
#8282
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi11481257725779240(Top 35%)1535(Top 13%)1535(Top 31%)
10K6.21 mi3.10 mi10320+11611984+5931984+5939317(Top 35%)1550(Top 14%)1550(Top 32%)
15K9.32 mi3.11 mi9889+4311778+2061778+2069240(Top 35%)1535(Top 13%)1535(Top 31%)
20K12.43 mi3.11 mi9450+4391611+1671611+1678316(Top 31%)1227(Top 11%)1227(Top 25%)
Half13.11 mi0.68 mi9439+111607+41607+49282(Top 35%)1574(Top 14%)1574(Top 32%)
25K15.53 mi2.42 mi9306+1331566+411566+418793(Top 33%)1472(Top 13%)1472(Top 30%)
30K18.64 mi3.11 mi8848+4581424+1421424+1427085(Top 27%)955(Top 8%)955(Top 20%)
20M20.00 mi1.36 mi8704+1441393+311393+317219(Top 27%)1111(Top 10%)1111(Top 23%)
21M21.00 mi1.00 mi8614+901378+151378+157816(Top 29%)1431(Top 13%)1431(Top 29%)
35K21.75 mi0.75 mi8585+291379-11379-17678(Top 29%)1372(Top 12%)1372(Top 28%)
23M23.00 mi1.25 mi8521+641381-21381-27972(Top 30%)1569(Top 14%)1569(Top 32%)
24M24.00 mi1.00 mi8411+1101357+241357+247088(Top 27%)1317(Top 12%)1317(Top 27%)
40K24.85 mi0.85 mi8366+451361-41361-47739(Top 29%)1646(Top 14%)1646(Top 34%)
25.2M25.20 mi0.35 mi8342+241363-21363-28428(Top 32%)1979(Top 17%)1979(Top 41%)
Finish26.22 mi1.02 mi8282+601364-11364-17528(Top 28%)1633(Top 14%)1633(Top 33%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9240

Females

1535

F18-39

1535

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9317

Females

1550

F18-39

1550

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9240

Females

1535

F18-39

1535

15K→20K

9.3 - 12.4 mi

Top 31%
×5stories
+106ft-86ft

Overall

8316

Females

1227

F18-39

1227

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9282

Females

1574

F18-39

1574

Half→25K

13.1 - 15.5 mi

Top 33%
×4stories
+66ft-88ft

Overall

8793

Females

1472

F18-39

1472

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7085

Females

955

F18-39

955

30K→20M

18.6 - 20.0 mi

Top 27%
×5stories
+64ft-50ft

Overall

7219

Females

1111

F18-39

1111

20M→21M

20.0 - 21.0 mi

Top 29%
×8stories
+106ft-24ft

Overall

7816

Females

1431

F18-39

1431

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

7678

Females

1372

F18-39

1372

35K→23M

21.8 - 23.0 mi

Top 30%
×5stories
+23ft-63ft

Overall

7972

Females

1569

F18-39

1569

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7088

Females

1317

F18-39

1317

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7739

Females

1646

F18-39

1646

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8428

Females

1979

F18-39

1979

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7528

Females

1633

F18-39

1633

Passing Analysis

Category:
Athletes Passed
3560*
Passed By
361
Net Change
+3199
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11481
5K → 10K1189*28+1161#11481#10320
10K → 15K460*29+431#10320#9889
15K → 20K451*12+439#9889#9450
20K → Half2615+11#9450#9439
Half → 25K18148+133#9439#9306
25K → 30K47214+458#9306#8848
30K → 20M16319+144#8848#8704
20M → 21M11323+90#8704#8614
21M → 35K5728+29#8614#8585
35K → 23M11147+64#8585#8521
23M → 24M12616+110#8521#8411
24M → 40K7328+45#8411#8366
40K → 25.2M4016+24#8366#8342
25.2M → Finish9838+60#8342#8282
TOTALS3560*361+3199

* 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