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BOSTON MARATHON 2023

Nina Anderson

Bib: 13230•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 15%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 4%
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
6:50/mi
21:14
↑ 97↓ 3451.5%
10K· 6.21 mi
6:48/mi
42:22
↑ 79↓ 1380.4%
15K· 9.32 mi
6:47/mi
1:03:28
↑ 67↓ 78
20K· 12.43 mi
6:50/mi
1:24:41
↑ 106↓ 860.1%
Half· 13.11 mi
6:47/mi
1:29:19
↑ 19↓ 370.5%
25K· 15.53 mi
6:52/mi
1:45:59
↑ 66↓ 880.2%
30K· 18.64 mi
6:58/mi
2:07:37
↑ 181↓ 1480.2%
20M
7:03/mi
2:17:12
↑ 64↓ 500.2%
21M
7:22/mi
2:24:34
↑ 106↓ 241.6%
35K· 21.75 mi
6:41/mi
2:29:34
↑ 17↓ 861.7%
23M
6:52/mi
2:38:10
↑ 23↓ 630.6%
24M
6:32/mi
2:44:42
↓ 821.3%
40K· 24.85 mi
6:40/mi
2:50:24
↓ 200.3%
25.2M
6:58/mi
2:52:48
↑ 13↓ 160.2%
Finish· 26.22 mi
6:20/mi
2:59:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:29:19
Pace6:49 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:56
Pace6:52 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:1021:146:5021:14
6:50
-
10K
6.21 mi11:10:1842:226:4921:08
6:48
-0:02
15K
9.32 mi11:31:241:03:286:4921:06
6:47
-0:01
20K
12.43 mi11:52:371:24:416:4921:13
6:50
+0:03
Half
13.11 mi11:57:151:29:196:494:38
6:47
-0:03
25K
15.53 mi12:13:551:45:596:4916:40
6:52
+0:05
30K
18.64 mi12:35:332:07:376:5121:38
6:58
+0:06
20M
20.00 mi12:45:082:17:126:529:35
7:03
+0:05
21M
21.00 mi12:52:302:24:346:537:22
7:22
+0:19
35K
21.75 mi12:57:302:29:346:535:00
6:41
-0:41
23M
23.00 mi13:06:062:38:106:538:36
6:52
+0:11
24M
24.00 mi13:12:382:44:426:526:32
6:32
-0:20
40K
24.85 mi13:18:202:50:246:515:42
6:40
+0:08
25.2M
25.20 mi13:20:442:52:486:512:24
6:58
+0:18
Finish
26.22 mi13:27:112:59:156:506:27
6:20
-0:38

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

6:20 /mi

Average Pace

6:50 /mi

Slowest Pace

7:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:16

77% of race

Time at Steady Pace

40:59

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:50 /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 mi10:49:1021:146:5021:14
6:50
#5022
10K
6.21 mi11:10:1842:226:4921:08
6:48
#5114
15K
9.32 mi11:31:241:03:286:4921:06
6:47
#5084
20K
12.43 mi11:52:371:24:416:4921:13
6:50
#4971
Half
13.11 mi11:57:151:29:196:494:38
6:47
#4981
25K
15.53 mi12:13:551:45:596:4916:40
6:52
#4921
30K
18.64 mi12:35:332:07:376:5121:38
6:58
#4720
20M
20.00 mi12:45:082:17:126:529:35
7:03
#4677
21M
21.00 mi12:52:302:24:346:537:22
7:22
#4621
35K
21.75 mi12:57:302:29:346:535:00
6:41
#4559
23M
23.00 mi13:06:062:38:106:538:36
6:52
#4421
24M
24.00 mi13:12:382:44:426:526:32
6:32
#4290
40K
24.85 mi13:18:202:50:246:515:42
6:40
#4164
25.2M
25.20 mi13:20:442:52:486:512:24
6:58
#4097
Finish
26.22 mi13:27:112:59:156:506:27
6:20
#3947
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi50223563565049(Top 19%)358(Top 3%)358(Top 7%)
10K6.21 mi3.10 mi5114-92367-11367-115344(Top 20%)400(Top 4%)400(Top 8%)
15K9.32 mi3.11 mi5084+30358+9358+95049(Top 19%)358(Top 3%)358(Top 7%)
20K12.43 mi3.11 mi4971+113339+19339+194734(Top 18%)327(Top 3%)327(Top 7%)
Half13.11 mi0.68 mi4981-10344-5344-55268(Top 20%)390(Top 3%)390(Top 8%)
25K15.53 mi2.42 mi4921+60342+2342+24784(Top 18%)342(Top 3%)342(Top 7%)
30K18.64 mi3.11 mi4720+201317+25317+254114(Top 15%)273(Top 2%)273(Top 6%)
20M20.00 mi1.36 mi4677+43311+6311+64362(Top 16%)338(Top 3%)338(Top 7%)
21M21.00 mi1.00 mi4621+56313-2313-24004(Top 15%)310(Top 3%)310(Top 6%)
35K21.75 mi0.75 mi4559+62306+7306+73521(Top 13%)253(Top 2%)253(Top 5%)
23M23.00 mi1.25 mi4421+138290+16290+163080(Top 12%)207(Top 2%)207(Top 4%)
24M24.00 mi1.00 mi4290+131273+17273+172273(Top 9%)147(Top 1%)147(Top 3%)
40K24.85 mi0.85 mi4164+126264+9264+92232(Top 8%)158(Top 1%)158(Top 3%)
25.2M25.20 mi0.35 mi4097+67259+5259+51696(Top 6%)106(Top 0.9%)106(Top 2%)
Finish26.22 mi1.02 mi3947+150250+9250+91769(Top 7%)110(Top 1.0%)110(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

5049

Females

358

F18-39

358

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5344

Females

400

F18-39

400

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

5049

Females

358

F18-39

358

15K→20K

9.3 - 12.4 mi

Top 18%
×5story building
+106ft-86ft

Overall

4734

Females

327

F18-39

327

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5268

Females

390

F18-39

390

Half→25K

13.1 - 15.5 mi

Top 18%
×4story building
+66ft-88ft

Overall

4784

Females

342

F18-39

342

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

4114

Females

273

F18-39

273

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4362

Females

338

F18-39

338

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

4004

Females

310

F18-39

310

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3521

Females

253

F18-39

253

35K→23M

21.8 - 23.0 mi

Top 12%
×5story building
+23ft-63ft

Overall

3080

Females

207

F18-39

207

23M→24M

23.0 - 24.0 mi

Top 9%
×6story building
+12ft-82ft

Overall

2273

Females

147

F18-39

147

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2232

Females

158

F18-39

158

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1696

Females

106

F18-39

106

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2story building
+22ft-21ft

Overall

1769

Females

110

F18-39

110

Passing Analysis

Category:
Athletes Passed
1730
Passed By
655
Net Change
+1075
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5022
5K → 10K155247-92#5022#5114
10K → 15K131101+30#5114#5084
15K → 20K16653+113#5084#4971
20K → Half1727-10#4971#4981
Half → 25K12969+60#4981#4921
25K → 30K24443+201#4921#4720
30K → 20M8845+43#4720#4677
20M → 21M8327+56#4677#4621
21M → 35K7513+62#4621#4559
35K → 23M15719+138#4559#4421
23M → 24M1332+131#4421#4290
24M → 40K1271+126#4290#4164
40K → 25.2M681+67#4164#4097
25.2M → Finish1577+150#4097#3947
TOTALS1730655+1075
📊

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