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BOSTON MARATHON 2023

Lottie Nilsen

Bib: 25483•F

FL

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

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
10:52/mi
33:47
↑ 97↓ 3451.5%
10K· 6.21 mi
11:30/mi
1:09:31
↑ 79↓ 1380.4%
15K· 9.32 mi
11:51/mi
1:46:21
↑ 67↓ 78
20K· 12.43 mi
12:09/mi
2:24:06
↑ 106↓ 860.1%
Half· 13.11 mi
12:25/mi
2:32:34
↑ 19↓ 370.5%
25K· 15.53 mi
12:29/mi
3:02:51
↑ 66↓ 880.2%
30K· 18.64 mi
13:38/mi
3:45:13
↑ 181↓ 1480.2%
20M
14:18/mi
4:04:39
↑ 64↓ 500.2%
21M
15:27/mi
4:20:06
↑ 106↓ 241.6%
35K· 21.75 mi
13:33/mi
4:30:14
↑ 17↓ 861.7%
23M
13:36/mi
4:47:16
↑ 23↓ 630.6%
24M
12:58/mi
5:00:14
↓ 821.3%
40K· 24.85 mi
15:06/mi
5:13:09
↓ 200.3%
25.2M
14:50/mi
5:18:16
↑ 13↓ 160.2%
Finish· 26.22 mi
11:49/mi
5:30:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:32:34
Pace11:38 /mi
2nd Half
Distance13.11 mi
Time2:57:44
Pace13:33 /mi
📊Positive Split: 16.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:3833:4710:5233:47
10:52
-
10K
6.21 mi12:25:221:09:3111:1135:44
11:30
+0:38
15K
9.32 mi13:02:121:46:2111:2536:50
11:51
+0:21
20K
12.43 mi13:39:572:24:0611:3637:45
12:09
+0:18
Half
13.11 mi13:48:252:32:3411:388:28
12:25
+0:16
25K
15.53 mi14:18:423:02:5111:4630:17
12:29
+0:04
30K
18.64 mi15:01:043:45:1312:0542:22
13:38
+1:09
20M
20.00 mi15:20:304:04:3912:1419:26
14:18
+0:40
21M
21.00 mi15:35:574:20:0612:2315:27
15:27
+1:09
35K
21.75 mi15:46:054:30:1412:2610:08
13:33
-1:54
23M
23.00 mi16:03:074:47:1612:2917:02
13:36
+0:03
24M
24.00 mi16:16:055:00:1412:3112:58
12:58
-0:38
40K
24.85 mi16:29:005:13:0912:3612:55
15:06
+2:08
25.2M
25.20 mi16:34:075:18:1612:385:07
14:50
-0:16
Finish
26.22 mi16:46:095:30:1812:3612:02
11:49
-3:01

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

10:52 /mi

Average Pace

12:36 /mi

Slowest Pace

15:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:08

47% of race

Time at Steady Pace

2:01:15

37% of race

Time at Slower Pace

52:55

16% of race

Average Pace: 12:36 /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 mi11:49:3833:4710:5233:47
10:52
#25498
10K
6.21 mi12:25:221:09:3111:1135:44
11:30
#25810
15K
9.32 mi13:02:121:46:2111:2536:50
11:51
#25898
20K
12.43 mi13:39:572:24:0611:3637:45
12:09
#25877
Half
13.11 mi13:48:252:32:3411:388:28
12:25
#25899
25K
15.53 mi14:18:423:02:5111:4630:17
12:29
#25840
30K
18.64 mi15:01:043:45:1312:0542:22
13:38
#25852
20M
20.00 mi15:20:304:04:3912:1419:26
14:18
#25880
21M
21.00 mi15:35:574:20:0612:2315:27
15:27
#25896
35K
21.75 mi15:46:054:30:1412:2610:08
13:33
#25910
23M
23.00 mi16:03:074:47:1612:2917:02
13:36
#25896
24M
24.00 mi16:16:055:00:1412:3112:58
12:58
#25877
40K
24.85 mi16:29:005:13:0912:3612:55
15:06
#25920
25.2M
25.20 mi16:34:075:18:1612:385:07
14:50
#25915
Finish
26.22 mi16:46:095:30:1812:3612:02
11:49
#25901
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi25498107231072325972(Top 98%)11024(Top 97%)11024(Top 913%)
10K6.21 mi3.10 mi25810-31210929-20610929-20625961(Top 98%)11016(Top 96%)11016(Top 913%)
15K9.32 mi3.11 mi25898-8810979-5010979-5025972(Top 98%)11024(Top 97%)11024(Top 913%)
20K12.43 mi3.11 mi25877+2110961+1810961+1825740(Top 97%)10914(Top 96%)10914(Top 904%)
Half13.11 mi0.68 mi25899-2210972-1110972-1126110(Top 98%)11124(Top 97%)11124(Top 922%)
25K15.53 mi2.42 mi25840+5910952+2010952+2025542(Top 96%)10817(Top 95%)10817(Top 896%)
30K18.64 mi3.11 mi25852-1210966-1410966-1425838(Top 97%)11017(Top 96%)11017(Top 913%)
20M20.00 mi1.36 mi25880-2810988-2210988-2226005(Top 98%)11129(Top 97%)11129(Top 922%)
21M21.00 mi1.00 mi25896-1611000-1211000-1225988(Top 98%)11107(Top 97%)11107(Top 920%)
35K21.75 mi0.75 mi25910-1411012-1211012-1225922(Top 97%)11103(Top 97%)11103(Top 920%)
23M23.00 mi1.25 mi25896+1411006+611006+625581(Top 96%)10948(Top 96%)10948(Top 907%)
24M24.00 mi1.00 mi25877+1910999+710999+725449(Top 96%)10904(Top 95%)10904(Top 903%)
40K24.85 mi0.85 mi25920-4311023-2411023-2426195(Top 98%)11264(Top 99%)11264(Top 933%)
25.2M25.20 mi0.35 mi25915+511021+211021+225617(Top 96%)10984(Top 96%)10984(Top 910%)
Finish26.22 mi1.02 mi25901+1411012+911012+925054(Top 94%)10699(Top 94%)10699(Top 886%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21story building
+97ft-345ft

Overall

25972

Females

11024

F50-54

11024

5K→10K

3.1 - 6.2 mi

Top 98%
×5story building
+79ft-138ft

Overall

25961

Females

11016

F50-54

11016

10K→15K

6.2 - 9.3 mi

Top 98%
×3story building
+67ft-78ft

Overall

25972

Females

11024

F50-54

11024

15K→20K

9.3 - 12.4 mi

Top 97%
×5story building
+106ft-86ft

Overall

25740

Females

10914

F50-54

10914

20K→Half

12.4 - 13.1 mi

Top 98%
×2story building
+19ft-37ft

Overall

26110

Females

11124

F50-54

11124

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

25542

Females

10817

F50-54

10817

25K→30K

15.5 - 18.6 mi

Top 97%
×9story building
+181ft-148ft

Overall

25838

Females

11017

F50-54

11017

30K→20M

18.6 - 20.0 mi

Top 98%
×5story building
+64ft-50ft

Overall

26005

Females

11129

F50-54

11129

20M→21M

20.0 - 21.0 mi

Top 98%
×8story building
+106ft-24ft

Overall

25988

Females

11107

F50-54

11107

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

25922

Females

11103

F50-54

11103

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25581

Females

10948

F50-54

10948

23M→24M

23.0 - 24.0 mi

Top 96%
×6story building
+12ft-82ft

Overall

25449

Females

10904

F50-54

10904

24M→40K

24.0 - 24.9 mi

Top 98%
×1story
+6ft-20ft

Overall

26195

Females

11264

F50-54

11264

40K→25.2M

24.9 - 25.2 mi

Top 96%
×1story
+13ft-16ft

Overall

25617

Females

10984

F50-54

10984

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

25054

Females

10699

F50-54

10699

Passing Analysis

Category:
Athletes Passed
396
Passed By
799
Net Change
-403
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25498
5K → 10K45357-312#25498#25810
10K → 15K48136-88#25810#25898
15K → 20K6847+21#25898#25877
20K → Half426-22#25877#25899
Half → 25K7213+59#25899#25840
25K → 30K4052-12#25840#25852
30K → 20M1644-28#25852#25880
20M → 21M1531-16#25880#25896
21M → 35K923-14#25896#25910
35K → 23M239+14#25910#25896
23M → 24M245+19#25896#25877
24M → 40K245-43#25877#25920
40K → 25.2M105+5#25920#25915
25.2M → Finish206+14#25915#25901
TOTALS396799-403
📊

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