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BOSTON MARATHON 2023

Barbara Looser

Bib: 19990•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 37%
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
7:49/mi
24:17
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
48:33
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:13:32
↑ 67↓ 78
20K· 12.43 mi
8:13/mi
1:39:03
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:44:33
↑ 19↓ 370.5%
25K· 15.53 mi
8:12/mi
2:04:27
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:30:26
↑ 181↓ 1480.2%
20M
8:32/mi
2:42:02
↑ 64↓ 500.2%
21M
9:09/mi
2:51:11
↑ 106↓ 241.6%
35K· 21.75 mi
8:23/mi
2:57:27
↑ 17↓ 861.7%
23M
8:37/mi
3:08:14
↑ 23↓ 630.6%
24M
8:16/mi
3:16:30
↓ 821.3%
40K· 24.85 mi
8:40/mi
3:23:55
↓ 200.3%
25.2M
9:34/mi
3:27:13
↑ 13↓ 160.2%
Finish· 26.22 mi
8:24/mi
3:35:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:33
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:51:14
Pace8:29 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4724:177:4924:17
7:49
-
10K
6.21 mi11:40:0348:337:4924:16
7:49
0:00
15K
9.32 mi12:05:021:13:327:5324:59
8:02
+0:13
20K
12.43 mi12:30:331:39:037:5825:31
8:13
+0:11
Half
13.11 mi12:36:031:44:337:595:30
8:04
-0:09
25K
15.53 mi12:55:572:04:278:0119:54
8:12
+0:08
30K
18.64 mi13:21:562:30:268:0425:59
8:22
+0:10
20M
20.00 mi13:33:322:42:028:0611:36
8:32
+0:10
21M
21.00 mi13:42:412:51:118:099:09
9:09
+0:37
35K
21.75 mi13:48:572:57:278:106:16
8:23
-0:46
23M
23.00 mi13:59:443:08:148:1110:47
8:37
+0:14
24M
24.00 mi14:08:003:16:308:118:16
8:16
-0:21
40K
24.85 mi14:15:253:23:558:127:25
8:40
+0:24
25.2M
25.20 mi14:18:433:27:138:133:18
9:34
+0:54
Finish
26.22 mi14:27:173:35:478:148:34
8:24
-1:10

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

7:49 /mi

Average Pace

8:14 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:02

37% of race

Time at Steady Pace

1:46:06

49% of race

Time at Slower Pace

30:39

14% of race

Average Pace: 8:14 /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 mi11:15:4724:177:4924:17
7:49
#12525
10K
6.21 mi11:40:0348:337:4924:16
7:49
#12831
15K
9.32 mi12:05:021:13:327:5324:59
8:02
#13495
20K
12.43 mi12:30:331:39:037:5825:31
8:13
#13868
Half
13.11 mi12:36:031:44:337:595:30
8:04
#13910
25K
15.53 mi12:55:572:04:278:0119:54
8:12
#13953
30K
18.64 mi13:21:562:30:268:0425:59
8:22
#13854
20M
20.00 mi13:33:322:42:028:0611:36
8:32
#13844
21M
21.00 mi13:42:412:51:118:099:09
9:09
#13861
35K
21.75 mi13:48:572:57:278:106:16
8:23
#13876
23M
23.00 mi13:59:443:08:148:1110:47
8:37
#13844
24M
24.00 mi14:08:003:16:308:118:16
8:16
#13781
40K
24.85 mi14:15:253:23:558:127:25
8:40
#13800
25.2M
25.20 mi14:18:433:27:138:133:18
9:34
#13825
Finish
26.22 mi14:27:173:35:478:148:34
8:24
#13852
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi125253178317814739(Top 55%)4528(Top 40%)4528(Top 93%)
10K6.21 mi3.10 mi12831-3063337-1593337-15913235(Top 50%)3575(Top 31%)3575(Top 73%)
15K9.32 mi3.11 mi13495-6643746-4093746-40914739(Top 55%)4528(Top 40%)4528(Top 93%)
20K12.43 mi3.11 mi13868-3734003-2574003-25715051(Top 57%)4745(Top 42%)4745(Top 97%)
Half13.11 mi0.68 mi13910-424033-304033-3014886(Top 56%)4606(Top 40%)4606(Top 94%)
25K15.53 mi2.42 mi13953-434084-514084-5114293(Top 54%)4385(Top 38%)4385(Top 90%)
30K18.64 mi3.11 mi13854+994048+364048+3613443(Top 50%)4000(Top 35%)4000(Top 82%)
20M20.00 mi1.36 mi13844+104066-184066-1813859(Top 52%)4328(Top 38%)4328(Top 89%)
21M21.00 mi1.00 mi13861-174089-234089-2314224(Top 53%)4601(Top 40%)4601(Top 94%)
35K21.75 mi0.75 mi13876-154120-314120-3114600(Top 55%)4882(Top 43%)4882(Top 100%)
23M23.00 mi1.25 mi13844+324130-104130-1013886(Top 52%)4549(Top 40%)4549(Top 93%)
24M24.00 mi1.00 mi13781+634122+84122+813088(Top 49%)4177(Top 37%)4177(Top 86%)
40K24.85 mi0.85 mi13800-194145-234145-2314388(Top 54%)4960(Top 43%)4960(Top 102%)
25.2M25.20 mi0.35 mi13825-254170-254170-2515520(Top 58%)5581(Top 49%)5581(Top 114%)
Finish26.22 mi1.02 mi13852-274203-334203-3314796(Top 56%)5145(Top 45%)5145(Top 105%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14739

Females

4528

F18-39

4528

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13235

Females

3575

F18-39

3575

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14739

Females

4528

F18-39

4528

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15051

Females

4745

F18-39

4745

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

14886

Females

4606

F18-39

4606

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

14293

Females

4385

F18-39

4385

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13443

Females

4000

F18-39

4000

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13859

Females

4328

F18-39

4328

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

14224

Females

4601

F18-39

4601

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14600

Females

4882

F18-39

4882

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

13886

Females

4549

F18-39

4549

23M→24M

23.0 - 24.0 mi

Top 49%
×6story building
+12ft-82ft

Overall

13088

Females

4177

F18-39

4177

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

14388

Females

4960

F18-39

4960

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15520

Females

5581

F18-39

5581

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14796

Females

5145

F18-39

5145

Passing Analysis

Category:
Athletes Passed
1237
Passed By
2564
Net Change
-1327
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12525
5K → 10K169475-306#12525#12831
10K → 15K55719-664#12831#13495
15K → 20K84457-373#13495#13868
20K → Half2264-42#13868#13910
Half → 25K112155-43#13910#13953
25K → 30K230131+99#13953#13854
30K → 20M9888+10#13854#13844
20M → 21M85102-17#13844#13861
21M → 35K4560-15#13861#13876
35K → 23M9967+32#13876#13844
23M → 24M10542+63#13844#13781
24M → 40K5574-19#13781#13800
40K → 25.2M2045-25#13800#13825
25.2M → Finish5885-27#13825#13852
TOTALS12372564-1327
📊

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