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BOSTON MARATHON 2023

Lorna Tan-Friederich

Bib: 21835•F

CA

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

Start
0:00:00
Race begins
5K· 3.11 mi
28:27
Rank: #21075
Start → 5K
28:27 | 9:09/mi
10K· 6.21 mi
57:51
Rank: #21763 (-688)
5K → 10K
29:24 | 9:28/mi
15K· 9.32 mi
1:27:20
Rank: #21897 (-134)
10K → 15K
29:29 | 9:29/mi
20K· 12.43 mi
1:57:11
Rank: #21895 (+2)
15K → 20K
29:51 | 9:36/mi
Half· 13.11 mi
2:03:46
Rank: #21909 (-14)
20K → Half
6:35 | 9:39/mi
25K· 15.53 mi
2:27:47
Rank: #21932 (-23)
Half → 25K
24:01 | 9:54/mi
30K· 18.64 mi
3:01:18
Rank: #22146 (-214)
25K → 30K
33:31 | 10:47/mi
20M
3:16:08
Rank: #22174 (-28)
30K → 20M
14:50 | 10:55/mi
21M
3:28:04
Rank: #22191 (-17)
20M → 21M
11:56 | 11:56/mi
35K· 21.75 mi
3:36:11
Rank: #22227 (-36)
21M → 35K
8:07 | 10:51/mi
23M
3:49:51
Rank: #22229 (-2)
35K → 23M
13:40 | 10:55/mi
24M
4:00:39
Rank: #22254 (-25)
23M → 24M
10:48 | 10:48/mi
40K· 24.85 mi
4:10:07
Rank: #22264 (-10)
24M → 40K
9:28 | 11:04/mi
25.2M
4:14:14
Rank: #22268 (-4)
40K → 25.2M
4:07 | 11:56/mi
Finish· 26.22 mi
4:24:23
Rank: #22255 (+13)
25.2M → Finish
10:09 | 9:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:03:46
Pace9:26 /mi
2nd Half
Distance13.11 mi
Time2:20:37
Pace10:44 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:0228:279:0928:27
9:09
-
10K
6.21 mi11:51:2657:519:1929:24
9:28
+0:19
15K
9.32 mi12:20:551:27:209:2229:29
9:29
+0:01
20K
12.43 mi12:50:461:57:119:2629:51
9:36
+0:07
Half
13.11 mi12:57:212:03:469:266:35
9:39
+0:03
25K
15.53 mi13:21:222:27:479:3124:01
9:54
+0:15
30K
18.64 mi13:54:533:01:189:4433:31
10:47
+0:53
20M
20.00 mi14:09:433:16:089:4814:50
10:55
+0:08
21M
21.00 mi14:21:393:28:049:5411:56
11:56
+1:01
35K
21.75 mi14:29:463:36:119:568:07
10:51
-1:05
23M
23.00 mi14:43:263:49:5110:0013:40
10:55
+0:04
24M
24.00 mi14:54:144:00:3910:0210:48
10:48
-0:07
40K
24.85 mi15:03:424:10:0710:049:28
11:04
+0:16
25.2M
25.20 mi15:07:494:14:1410:054:07
11:56
+0:52
Finish
26.22 mi15:17:584:24:2310:0510:09
9:58
-1:58

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

9:09 /mi

Average Pace

10:05 /mi

Slowest Pace

11:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:56

60% of race

Time at Steady Pace

1:30:24

34% of race

Time at Slower Pace

16:03

6% of race

Average Pace: 10:05 /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 mi11:22:0228:279:0928:27
9:09
#21075
10K
6.21 mi11:51:2657:519:1929:24
9:28
#21763
15K
9.32 mi12:20:551:27:209:2229:29
9:29
#21897
20K
12.43 mi12:50:461:57:119:2629:51
9:36
#21895
Half
13.11 mi12:57:212:03:469:266:35
9:39
#21909
25K
15.53 mi13:21:222:27:479:3124:01
9:54
#21932
30K
18.64 mi13:54:533:01:189:4433:31
10:47
#22146
20M
20.00 mi14:09:433:16:089:4814:50
10:55
#22174
21M
21.00 mi14:21:393:28:049:5411:56
11:56
#22191
35K
21.75 mi14:29:463:36:119:568:07
10:51
#22227
23M
23.00 mi14:43:263:49:5110:0013:40
10:55
#22229
24M
24.00 mi14:54:144:00:3910:0210:48
10:48
#22254
40K
24.85 mi15:03:424:10:0710:049:28
11:04
#22264
25.2M
25.20 mi15:07:494:14:1410:054:07
11:56
#22268
Finish
26.22 mi15:17:584:24:2310:0510:09
9:58
#22255
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi210758411841122235(Top 84%)8925(Top 78%)8925(Top 739%)
10K6.21 mi3.10 mi21763-6888724-3138724-31322416(Top 84%)9041(Top 79%)9041(Top 749%)
15K9.32 mi3.11 mi21897-1348782-588782-5822235(Top 84%)8925(Top 78%)8925(Top 739%)
20K12.43 mi3.11 mi21895+28775+78775+721893(Top 82%)8740(Top 77%)8740(Top 724%)
Half13.11 mi0.68 mi21909-148782-78782-722534(Top 85%)9097(Top 80%)9097(Top 754%)
25K15.53 mi2.42 mi21932-238788-68788-622009(Top 83%)8844(Top 77%)8844(Top 733%)
30K18.64 mi3.11 mi22146-2148919-1318919-13122768(Top 86%)9333(Top 82%)9333(Top 773%)
20M20.00 mi1.36 mi22174-288942-238942-2322556(Top 85%)9274(Top 81%)9274(Top 768%)
21M21.00 mi1.00 mi22191-178960-188960-1822655(Top 85%)9362(Top 82%)9362(Top 776%)
35K21.75 mi0.75 mi22227-368987-278987-2723024(Top 86%)9601(Top 84%)9601(Top 795%)
23M23.00 mi1.25 mi22229-29004-179004-1722188(Top 83%)9157(Top 80%)9157(Top 759%)
24M24.00 mi1.00 mi22254-259021-179021-1722667(Top 85%)9454(Top 83%)9454(Top 783%)
40K24.85 mi0.85 mi22264-109033-129033-1222509(Top 85%)9401(Top 82%)9401(Top 779%)
25.2M25.20 mi0.35 mi22268-49041-89041-822399(Top 84%)9347(Top 82%)9347(Top 774%)
Finish26.22 mi1.02 mi22255+139039+29039+221667(Top 81%)8945(Top 78%)8945(Top 741%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 84%
×21stories
+97ft-345ft

Overall

22235

Females

8925

F50-54

8925

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

22416

Females

9041

F50-54

9041

10K→15K

6.2 - 9.3 mi

Top 84%
×3stories
+67ft-78ft

Overall

22235

Females

8925

F50-54

8925

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21893

Females

8740

F50-54

8740

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

22534

Females

9097

F50-54

9097

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

22009

Females

8844

F50-54

8844

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22768

Females

9333

F50-54

9333

30K→20M

18.6 - 20.0 mi

Top 85%
×5stories
+64ft-50ft

Overall

22556

Females

9274

F50-54

9274

20M→21M

20.0 - 21.0 mi

Top 85%
×8stories
+106ft-24ft

Overall

22655

Females

9362

F50-54

9362

21M→35K

21.0 - 21.8 mi

Top 86%
×7stories
+17ft-86ft

Overall

23024

Females

9601

F50-54

9601

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22188

Females

9157

F50-54

9157

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

22667

Females

9454

F50-54

9454

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22509

Females

9401

F50-54

9401

40K→25.2M

24.9 - 25.2 mi

Top 84%
×1story
+13ft-16ft

Overall

22399

Females

9347

F50-54

9347

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

21667

Females

8945

F50-54

8945

Passing Analysis

Category:
Athletes Passed
793
Passed By
1973
Net Change
-1180
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21075
5K → 10K71759-688#21075#21763
10K → 15K113247-134#21763#21897
15K → 20K131129+2#21897#21895
20K → Half1832-14#21895#21909
Half → 25K95118-23#21909#21932
25K → 30K75289-214#21932#22146
30K → 20M5381-28#22146#22174
20M → 21M4663-17#22174#22191
21M → 35K2359-36#22191#22227
35K → 23M5153-2#22227#22229
23M → 24M3459-25#22229#22254
24M → 40K3747-10#22254#22264
40K → 25.2M1317-4#22264#22268
25.2M → Finish3320+13#22268#22255
TOTALS7931973-1180
📊

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