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BOSTON MARATHON 2023

Mary Hafner

Bib: 18036•F

GA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Division (F18-39)
#0 / 4884
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
8:11/mi
25:26
↑ 97↓ 3451.5%
10K· 6.21 mi
8:08/mi
50:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:15:37
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:41:05
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:46:35
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:06:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:36/mi
2:33:33
↑ 181↓ 1480.2%
20M
8:56/mi
2:45:42
↑ 64↓ 500.2%
21M
9:29/mi
2:55:11
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:01:45
↑ 17↓ 861.7%
23M
9:12/mi
3:13:16
↑ 23↓ 630.6%
24M
8:49/mi
3:22:05
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:29:54
↓ 200.3%
25.2M
9:54/mi
3:33:19
↑ 13↓ 160.2%
Finish· 26.22 mi
9:06/mi
3:42:35
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:35
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:56:00
Pace8:51 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:2925:268:1125:26
8:11
-
10K
6.21 mi11:41:4650:438:1025:17
8:08
-0:03
15K
9.32 mi12:06:401:15:378:0724:54
8:01
-0:07
20K
12.43 mi12:32:081:41:058:0825:28
8:12
+0:11
Half
13.11 mi12:37:381:46:358:085:30
8:04
-0:08
25K
15.53 mi12:57:532:06:508:1020:15
8:21
+0:17
30K
18.64 mi13:24:362:33:338:1426:43
8:36
+0:15
20M
20.00 mi13:36:452:45:428:1712:09
8:56
+0:20
21M
21.00 mi13:46:142:55:118:219:29
9:29
+0:33
35K
21.75 mi13:52:483:01:458:216:34
8:47
-0:42
23M
23.00 mi14:04:193:13:168:2411:31
9:12
+0:25
24M
24.00 mi14:13:083:22:058:258:49
8:49
-0:23
40K
24.85 mi14:20:573:29:548:277:49
9:09
+0:20
25.2M
25.20 mi14:24:223:33:198:283:25
9:54
+0:45
Finish
26.22 mi14:33:383:42:358:309:16
9:06
-0:48

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

8:01 /mi

Average Pace

8:30 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:50

57% of race

Time at Steady Pace

54:15

24% of race

Time at Slower Pace

41:30

19% of race

Average Pace: 8:29 /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 mi11:16:2925:268:1125:26
8:11
#15377
10K
6.21 mi11:41:4650:438:1025:17
8:08
#15564
15K
9.32 mi12:06:401:15:378:0724:54
8:01
#15208
20K
12.43 mi12:32:081:41:058:0825:28
8:12
#15126
Half
13.11 mi12:37:381:46:358:085:30
8:04
#15105
25K
15.53 mi12:57:532:06:508:1020:15
8:21
#15098
30K
18.64 mi13:24:362:33:338:1426:43
8:36
#15059
20M
20.00 mi13:36:452:45:428:1712:09
8:56
#15133
21M
21.00 mi13:46:142:55:118:219:29
9:29
#15160
35K
21.75 mi13:52:483:01:458:216:34
8:47
#15199
23M
23.00 mi14:04:193:13:168:2411:31
9:12
#15310
24M
24.00 mi14:13:083:22:058:258:49
8:49
#15367
40K
24.85 mi14:20:573:29:548:277:49
9:09
#15432
25.2M
25.20 mi14:24:223:33:198:283:25
9:54
#15453
Finish
26.22 mi14:33:383:42:358:309:16
9:06
#15591
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi153774887488714516(Top 55%)4397(Top 38%)4397(Top 90%)
10K6.21 mi3.10 mi15564-1875007-1205007-12015809(Top 59%)5151(Top 45%)5151(Top 105%)
15K9.32 mi3.11 mi15208+3564789+2184789+21814516(Top 55%)4397(Top 38%)4397(Top 90%)
20K12.43 mi3.11 mi15126+824764+254764+2514949(Top 56%)4684(Top 41%)4684(Top 96%)
Half13.11 mi0.68 mi15105+214751+134751+1314942(Top 56%)4662(Top 41%)4662(Top 95%)
25K15.53 mi2.42 mi15098+74771-204771-2015291(Top 57%)5015(Top 44%)5015(Top 103%)
30K18.64 mi3.11 mi15059+394793-224793-2214929(Top 56%)4888(Top 43%)4888(Top 100%)
20M20.00 mi1.36 mi15133-744859-664859-6616232(Top 61%)5703(Top 50%)5703(Top 117%)
21M21.00 mi1.00 mi15160-274902-434902-4315902(Top 60%)5573(Top 49%)5573(Top 114%)
35K21.75 mi0.75 mi15199-394946-444946-4416841(Top 63%)6185(Top 54%)6185(Top 127%)
23M23.00 mi1.25 mi15310-1115036-905036-9017055(Top 64%)6317(Top 55%)6317(Top 129%)
24M24.00 mi1.00 mi15367-575085-495085-4916304(Top 61%)5967(Top 52%)5967(Top 122%)
40K24.85 mi0.85 mi15432-655151-665151-6616838(Top 63%)6303(Top 55%)6303(Top 129%)
25.2M25.20 mi0.35 mi15453-215167-165167-1617036(Top 64%)6428(Top 56%)6428(Top 132%)
Finish26.22 mi1.02 mi15591-1385258-915258-9118437(Top 69%)7133(Top 62%)7133(Top 146%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14516

Females

4397

F18-39

4397

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

15809

Females

5151

F18-39

5151

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14516

Females

4397

F18-39

4397

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

14949

Females

4684

F18-39

4684

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14942

Females

4662

F18-39

4662

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

15291

Females

5015

F18-39

5015

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14929

Females

4888

F18-39

4888

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

16232

Females

5703

F18-39

5703

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

15902

Females

5573

F18-39

5573

21M→35K

21.0 - 21.8 mi

Top 63%
×7story building
+17ft-86ft

Overall

16841

Females

6185

F18-39

6185

35K→23M

21.8 - 23.0 mi

Top 64%
×5story building
+23ft-63ft

Overall

17055

Females

6317

F18-39

6317

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16304

Females

5967

F18-39

5967

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16838

Females

6303

F18-39

6303

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

17036

Females

6428

F18-39

6428

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18437

Females

7133

F18-39

7133

Passing Analysis

Category:
Athletes Passed
1601
Passed By
1815
Net Change
-214
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15377
5K → 10K213400-187#15377#15564
10K → 15K41357+356#15564#15208
15K → 20K221139+82#15208#15126
20K → Half4928+21#15126#15105
Half → 25K137130+7#15105#15098
25K → 30K195156+39#15098#15059
30K → 20M64138-74#15059#15133
20M → 21M76103-27#15133#15160
21M → 35K3877-39#15160#15199
35K → 23M50161-111#15199#15310
23M → 24M52109-57#15310#15367
24M → 40K40105-65#15367#15432
40K → 25.2M2748-21#15432#15453
25.2M → Finish26164-138#15453#15591
TOTALS16011815-214
📊

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