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BOSTON MARATHON 2023

Jane Heinrichs

MD

Bib: 21462 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:39/mi
26:51
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:31/mi
53:18
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:33/mi
1:19:51
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:41/mi
1:46:51
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:37/mi
1:52:44
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:55/mi
2:14:20
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:09/mi
2:42:46
↑ 181↓ 1480.2%
138 ft elev
20M
9:23/mi
2:55:31
↑ 64↓ 500.2%
148 ft elev
21M
9:54/mi
3:05:25
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:31/mi
3:12:32
↑ 17↓ 861.7%
156 ft elev
23M
9:48/mi
3:24:48
↑ 23↓ 630.6%
116 ft elev
24M
9:56/mi
3:34:44
↓ 821.3%
34 ft elev
40K· 24.85 mi
9:55/mi
3:43:13
↓ 200.3%
20 ft elev
25.2M
10:26/mi
3:46:49
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:30/mi
3:56:30
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:44
Pace8:36 /mi
2nd Half
Distance13.11 mi
Time2:03:46
Pace9:26 /mi
📊Positive Split: 9.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:4526:518:3926:51
8:39
-
10K
6.21 mi11:50:1253:188:3526:27
8:31
-0:08
15K
9.32 mi12:16:451:19:518:3426:33
8:33
+0:02
20K
12.43 mi12:43:451:46:518:3627:00
8:41
+0:08
Half
13.11 mi12:49:381:52:448:365:53
8:37
-0:04
25K
15.53 mi13:11:142:14:208:3921:36
8:55
+0:18
30K
18.64 mi13:39:402:42:468:4428:26
9:09
+0:14
20M
20.00 mi13:52:252:55:318:4712:45
9:23
+0:14
21M
21.00 mi14:02:193:05:258:509:54
9:54
+0:31
35K
21.75 mi14:09:263:12:328:517:07
9:31
-0:23
23M
23.00 mi14:21:423:24:488:5412:16
9:48
+0:17
24M
24.00 mi14:31:383:34:448:579:56
9:56
+0:08
40K
24.85 mi14:40:073:43:138:598:29
9:55
-0:01
25.2M
25.20 mi14:43:433:46:499:003:36
10:26
+0:31
Finish
26.22 mi14:53:243:56:309:029:41
9:30
-0:56

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

8:31 /mi

Average Pace

9:02 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:14:20

57% of race

Time at Steady Pace

57:59

25% of race

Time at Slower Pace

44:11

19% of race

Average Pace: 9:01 /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 mi11:23:4526:518:3926:51
8:39
#18530
10K
6.21 mi11:50:1253:188:3526:27
8:31
#18404
15K
9.32 mi12:16:451:19:518:3426:33
8:33
#18283
20K
12.43 mi12:43:451:46:518:3627:00
8:41
#18198
Half
13.11 mi12:49:381:52:448:365:53
8:37
#18212
25K
15.53 mi13:11:142:14:208:3921:36
8:55
#18253
30K
18.64 mi13:39:402:42:468:4428:26
9:09
#18172
20M
20.00 mi13:52:252:55:318:4712:45
9:23
#18185
21M
21.00 mi14:02:193:05:258:509:54
9:54
#18148
35K
21.75 mi14:09:263:12:328:517:07
9:31
#18244
23M
23.00 mi14:21:423:24:488:5412:16
9:48
#18328
24M
24.00 mi14:31:383:34:448:579:56
9:56
#18488
40K
24.85 mi14:40:073:43:138:598:29
9:55
#18557
25.2M
25.20 mi14:43:433:46:499:003:36
10:26
#18573
Finish
26.22 mi14:53:243:56:309:029:41
9:30
#18660
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi185306895689518140(Top 68%)6588(Top 58%)6588(Top 546%)
10K6.21 mi3.10 mi18404+1266766+1296766+12918357(Top 69%)6693(Top 59%)6693(Top 555%)
15K9.32 mi3.11 mi18283+1216683+836683+8318140(Top 68%)6588(Top 58%)6588(Top 546%)
20K12.43 mi3.11 mi18198+856630+536630+5318081(Top 68%)6559(Top 57%)6559(Top 543%)
Half13.11 mi0.68 mi18212-146642-126642-1218539(Top 70%)6815(Top 60%)6815(Top 565%)
25K15.53 mi2.42 mi18253-416682-406682-4018525(Top 70%)6868(Top 60%)6868(Top 569%)
30K18.64 mi3.11 mi18172+816673+96673+917949(Top 67%)6624(Top 58%)6624(Top 549%)
20M20.00 mi1.36 mi18185-136692-196692-1918419(Top 69%)6987(Top 61%)6987(Top 579%)
21M21.00 mi1.00 mi18148+376688+46688+417685(Top 66%)6584(Top 58%)6584(Top 545%)
35K21.75 mi0.75 mi18244-966750-626750-6219929(Top 75%)7897(Top 69%)7897(Top 654%)
23M23.00 mi1.25 mi18328-846808-586808-5819444(Top 73%)7658(Top 67%)7658(Top 634%)
24M24.00 mi1.00 mi18488-1606900-926900-9220624(Top 77%)8346(Top 73%)8346(Top 691%)
40K24.85 mi0.85 mi18557-696952-526952-5219785(Top 74%)7947(Top 70%)7947(Top 658%)
25.2M25.20 mi0.35 mi18573-166969-176969-1718983(Top 71%)7522(Top 66%)7522(Top 623%)
Finish26.22 mi1.02 mi18660-877027-587027-5820173(Top 76%)8109(Top 71%)8109(Top 672%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

18140

Females

6588

F50-54

6588

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18357

Females

6693

F50-54

6693

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

18140

Females

6588

F50-54

6588

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

18081

Females

6559

F50-54

6559

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18539

Females

6815

F50-54

6815

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18525

Females

6868

F50-54

6868

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17949

Females

6624

F50-54

6624

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

18419

Females

6987

F50-54

6987

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17685

Females

6584

F50-54

6584

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

19929

Females

7897

F50-54

7897

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19444

Females

7658

F50-54

7658

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20624

Females

8346

F50-54

8346

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19785

Females

7947

F50-54

7947

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18983

Females

7522

F50-54

7522

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

20173

Females

8109

F50-54

8109

Passing Analysis

Category:
Athletes Passed
1578
Passed By
1708
Net Change
-130
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18530
5K → 10K408282+126#18530#18404
10K → 15K245124+121#18404#18283
15K → 20K202117+85#18283#18198
20K → Half2337-14#18198#18212
Half → 25K115156-41#18212#18253
25K → 30K226145+81#18253#18172
30K → 20M7891-13#18172#18185
20M → 21M11881+37#18185#18148
21M → 35K23119-96#18148#18244
35K → 23M50134-84#18244#18328
23M → 24M15175-160#18328#18488
24M → 40K36105-69#18488#18557
40K → 25.2M1733-16#18557#18573
25.2M → Finish22109-87#18573#18660
TOTALS15781708-130
📊

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