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BOSTON MARATHON 2023

Meredith Anderson

IA

Bib: 10989 F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 37%
Gender (Female)
#0 / 11423
Top 18%
Division (F18-39)
#0 / 4884
Top 32%
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
7:28/mi
23:12
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:15/mi
45:44
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:16/mi
1:08:18
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:29/mi
1:31:34
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:26/mi
1:36:38
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:41/mi
1:55:16
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:05/mi
2:20:22
↑ 181↓ 1480.2%
138 ft elev
20M
8:03/mi
2:31:19
↑ 64↓ 500.2%
148 ft elev
21M
9:03/mi
2:40:22
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:29/mi
2:45:58
↑ 17↓ 861.7%
156 ft elev
23M
8:18/mi
2:56:21
↑ 23↓ 630.6%
116 ft elev
24M
7:42/mi
3:04:03
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:10/mi
3:11:02
↓ 200.3%
20 ft elev
25.2M
9:34/mi
3:14:20
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:59/mi
3:22:28
↑ 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
Time1:36:38
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:45:50
Pace8:04 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:3123:127:2823:12
7:28
-
10K
6.21 mi11:12:0345:447:2222:32
7:15
-0:13
15K
9.32 mi11:34:371:08:187:2022:34
7:16
+0:01
20K
12.43 mi11:57:531:31:347:2223:16
7:29
+0:13
Half
13.11 mi12:02:571:36:387:225:04
7:26
-0:03
25K
15.53 mi12:21:351:55:167:2518:38
7:41
+0:15
30K
18.64 mi12:46:412:20:227:3225:06
8:05
+0:24
20M
20.00 mi12:57:382:31:197:3410:57
8:03
-0:02
21M
21.00 mi13:06:412:40:227:389:03
9:03
+1:00
35K
21.75 mi13:12:172:45:587:385:36
7:29
-1:34
23M
23.00 mi13:22:402:56:217:4010:23
8:18
+0:49
24M
24.00 mi13:30:223:04:037:407:42
7:42
-0:36
40K
24.85 mi13:37:213:11:027:416:59
8:10
+0:28
25.2M
25.20 mi13:40:393:14:207:433:18
9:34
+1:24
Finish
26.22 mi13:48:473:22:287:448:08
7:59
-1:35

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

7:15 /mi

Average Pace

7:44 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

45:06

22% of race

Time at Steady Pace

1:31:36

45% of race

Time at Slower Pace

1:05:46

32% of race

Average Pace: 7:43 /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 mi10:49:3123:127:2823:12
7:28
#9371
10K
6.21 mi11:12:0345:447:2222:32
7:15
#8898
15K
9.32 mi11:34:371:08:187:2022:34
7:16
#8677
20K
12.43 mi11:57:531:31:347:2223:16
7:29
#8755
Half
13.11 mi12:02:571:36:387:225:04
7:26
#8797
25K
15.53 mi12:21:351:55:167:2518:38
7:41
#8985
30K
18.64 mi12:46:412:20:227:3225:06
8:05
#9399
20M
20.00 mi12:57:382:31:197:3410:57
8:03
#9499
21M
21.00 mi13:06:412:40:227:389:03
9:03
#9711
35K
21.75 mi13:12:172:45:587:385:36
7:29
#9651
23M
23.00 mi13:22:402:56:217:4010:23
8:18
#9749
24M
24.00 mi13:30:223:04:037:407:42
7:42
#9686
40K
24.85 mi13:37:213:11:027:416:59
8:10
#9725
25.2M
25.20 mi13:40:393:14:207:433:18
9:34
#9818
Finish
26.22 mi13:48:473:22:287:448:08
7:59
#9873
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi937115661566827911741174
10K6.21 mi3.10 mi8898+4731372+1941372+194852512401240
15K9.32 mi3.11 mi8677+2211292+801292+80827911741174
20K12.43 mi3.11 mi8755-781333-411333-41924515821582
Half13.11 mi0.68 mi8797-421360-271360-27968417551755
25K15.53 mi2.42 mi8985-1881441-811441-811020520882088
30K18.64 mi3.11 mi9399-4141653-2121653-2121151529042904
20M20.00 mi1.36 mi9499-1001706-531706-531071625842584
21M21.00 mi1.00 mi9711-2121808-1021808-1021368243064306
35K21.75 mi0.75 mi9651+601799+91799+9850417031703
23M23.00 mi1.25 mi9749-981886-871886-871184334213421
24M24.00 mi1.00 mi9686+631882+41882+4911221562156
40K24.85 mi0.85 mi9725-391926-441926-441115132213221
25.2M25.20 mi0.35 mi9818-931988-621988-621550155625562
Finish26.22 mi1.02 mi9873-552036-482036-481199636943694

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 31%
×21story building
+97ft-345ft

Overall

8279

Females

1174

F18-39

1174

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8525

Females

1240

F18-39

1240

10K→15K

6.2 - 9.3 mi

Top 31%
×3story building
+67ft-78ft

Overall

8279

Females

1174

F18-39

1174

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

9245

Females

1582

F18-39

1582

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

9684

Females

1755

F18-39

1755

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10205

Females

2088

F18-39

2088

25K→30K

15.5 - 18.6 mi

Top 43%
×9story building
+181ft-148ft

Overall

11515

Females

2904

F18-39

2904

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

10716

Females

2584

F18-39

2584

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13682

Females

4306

F18-39

4306

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8504

Females

1703

F18-39

1703

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11843

Females

3421

F18-39

3421

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9112

Females

2156

F18-39

2156

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11151

Females

3221

F18-39

3221

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

15501

Females

5562

F18-39

5562

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

11996

Females

3694

F18-39

3694

Passing Analysis

Category:
Athletes Passed
1523*
Passed By
2025
Net Change
-502
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9371
5K → 10K56895+473#9371#8898
10K → 15K27352+221#8898#8677
15K → 20K102180-78#8677#8755
20K → Half1153-42#8755#8797
Half → 25K57245-188#8797#8985
25K → 30K72486-414#8985#9399
30K → 20M59159-100#9399#9499
20M → 21M29241-212#9499#9711
21M → 35K7313+60#9711#9651
35K → 23M68166-98#9651#9749
23M → 24M9532+63#9749#9686
24M → 40K46*85-39#9686#9725
40K → 25.2M15108-93#9725#9818
25.2M → Finish55*110-55#9818#9873
TOTALS1523*2025-502

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Charts

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