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BOSTON MARATHON 2023

Allison Coffman

Bib: 17420•F

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Division (F18-39)
#0 / 4884
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:53/mi
24:31
↑ 97↓ 3451.5%
10K· 6.21 mi
7:30/mi
47:48
↑ 79↓ 1380.4%
15K· 9.32 mi
7:32/mi
1:11:13
↑ 67↓ 78
20K· 12.43 mi
7:43/mi
1:35:12
↑ 106↓ 860.1%
Half· 13.11 mi
7:29/mi
1:40:18
↑ 19↓ 370.5%
25K· 15.53 mi
7:47/mi
1:59:11
↑ 66↓ 880.2%
30K· 18.64 mi
8:11/mi
2:24:37
↑ 181↓ 1480.2%
20M
8:06/mi
2:35:38
↑ 64↓ 500.2%
21M
8:56/mi
2:44:34
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:50:36
↑ 17↓ 861.7%
23M
8:20/mi
3:01:02
↑ 23↓ 630.6%
24M
8:10/mi
3:09:12
↓ 821.3%
40K· 24.85 mi
8:21/mi
3:16:20
↓ 200.3%
25.2M
8:39/mi
3:19:19
↑ 13↓ 160.2%
Finish· 26.22 mi
7:58/mi
3:27:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:18
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:47:08
Pace8:10 /mi
📊Positive Split: 6.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:1224:317:5324:31
7:53
-
10K
6.21 mi11:38:2947:487:4223:17
7:30
-0:23
15K
9.32 mi12:01:541:11:137:3823:25
7:32
+0:02
20K
12.43 mi12:25:531:35:127:4023:59
7:43
+0:11
Half
13.11 mi12:30:591:40:187:395:06
7:29
-0:14
25K
15.53 mi12:49:521:59:117:4018:53
7:47
+0:18
30K
18.64 mi13:15:182:24:377:4525:26
8:11
+0:24
20M
20.00 mi13:26:192:35:387:4711:01
8:06
-0:05
21M
21.00 mi13:35:152:44:347:508:56
8:56
+0:50
35K
21.75 mi13:41:172:50:367:516:02
8:04
-0:52
23M
23.00 mi13:51:433:01:027:5210:26
8:20
+0:16
24M
24.00 mi13:59:533:09:127:538:10
8:10
-0:10
40K
24.85 mi14:07:013:16:207:547:08
8:21
+0:11
25.2M
25.20 mi14:10:003:19:197:552:59
8:39
+0:18
Finish
26.22 mi14:18:073:27:267:558:07
7:58
-0:41

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

7:29 /mi

Average Pace

7:55 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:57:57

86% of race

Time at Steady Pace

20:33

10% of race

Time at Slower Pace

8:56

4% of race

Average Pace: 7:55 /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 mi11:15:1224:317:5324:31
7:53
#13166
10K
6.21 mi11:38:2947:487:4223:17
7:30
#11740
15K
9.32 mi12:01:541:11:137:3823:25
7:32
#11297
20K
12.43 mi12:25:531:35:127:4023:59
7:43
#11194
Half
13.11 mi12:30:591:40:187:395:06
7:29
#11134
25K
15.53 mi12:49:521:59:117:4018:53
7:47
#11083
30K
18.64 mi13:15:182:24:377:4525:26
8:11
#11234
20M
20.00 mi13:26:192:35:387:4711:01
8:06
#11203
21M
21.00 mi13:35:152:44:347:508:56
8:56
#11298
35K
21.75 mi13:41:172:50:367:516:02
8:04
#11347
23M
23.00 mi13:51:433:01:027:5210:26
8:20
#11407
24M
24.00 mi13:59:533:09:127:538:10
8:10
#11438
40K
24.85 mi14:07:013:16:207:547:08
8:21
#11477
25.2M
25.20 mi14:10:003:19:197:552:59
8:39
#11447
Finish
26.22 mi14:18:073:27:267:558:07
7:58
#11440
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131663530353010504(Top 39%)2080(Top 18%)2080(Top 43%)
10K6.21 mi3.10 mi11740+14262727+8032727+80310409(Top 39%)2012(Top 18%)2012(Top 41%)
15K9.32 mi3.11 mi11297+4432489+2382489+23810504(Top 39%)2080(Top 18%)2080(Top 43%)
20K12.43 mi3.11 mi11194+1032429+602429+6011087(Top 42%)2453(Top 21%)2453(Top 50%)
Half13.11 mi0.68 mi11134+602403+262403+2610122(Top 38%)1958(Top 17%)1958(Top 40%)
25K15.53 mi2.42 mi11083+512400+32400+311021(Top 41%)2498(Top 22%)2498(Top 51%)
30K18.64 mi3.11 mi11234-1512552-1522552-15212250(Top 46%)3325(Top 29%)3325(Top 68%)
20M20.00 mi1.36 mi11203+312546+62546+611093(Top 42%)2782(Top 24%)2782(Top 57%)
21M21.00 mi1.00 mi11298-952622-762622-7613033(Top 49%)3954(Top 35%)3954(Top 81%)
35K21.75 mi0.75 mi11347-492654-322654-3212584(Top 47%)3745(Top 33%)3745(Top 77%)
23M23.00 mi1.25 mi11407-602723-692723-6912136(Top 46%)3586(Top 31%)3586(Top 73%)
24M24.00 mi1.00 mi11438-312757-342757-3412387(Top 47%)3784(Top 33%)3784(Top 77%)
40K24.85 mi0.85 mi11477-392801-442801-4412346(Top 46%)3846(Top 34%)3846(Top 79%)
25.2M25.20 mi0.35 mi11447+302798+32798+310512(Top 39%)2938(Top 26%)2938(Top 60%)
Finish26.22 mi1.02 mi11440+72815-172815-1711882(Top 45%)3639(Top 32%)3639(Top 75%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10504

Females

2080

F18-39

2080

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10409

Females

2012

F18-39

2012

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10504

Females

2080

F18-39

2080

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11087

Females

2453

F18-39

2453

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10122

Females

1958

F18-39

1958

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

11021

Females

2498

F18-39

2498

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12250

Females

3325

F18-39

3325

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11093

Females

2782

F18-39

2782

20M→21M

20.0 - 21.0 mi

Top 49%
×8story building
+106ft-24ft

Overall

13033

Females

3954

F18-39

3954

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

12584

Females

3745

F18-39

3745

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12136

Females

3586

F18-39

3586

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12387

Females

3784

F18-39

3784

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12346

Females

3846

F18-39

3846

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10512

Females

2938

F18-39

2938

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

11882

Females

3639

F18-39

3639

Passing Analysis

Category:
Athletes Passed
2991
Passed By
1265
Net Change
+1726
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13166
5K → 10K145731+1426#13166#11740
10K → 15K48441+443#11740#11297
15K → 20K208105+103#11297#11194
20K → Half644+60#11194#11134
Half → 25K14594+51#11134#11083
25K → 30K131282-151#11083#11234
30K → 20M10776+31#11234#11203
20M → 21M58153-95#11203#11298
21M → 35K3685-49#11298#11347
35K → 23M70130-60#11347#11407
23M → 24M5283-31#11407#11438
24M → 40K5291-39#11438#11477
40K → 25.2M4818+30#11477#11447
25.2M → Finish7972+7#11447#11440
TOTALS29911265+1726
📊

Passing Visuals

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