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BOSTON MARATHON 2023

Allison Norris

Bib: 20257•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 35%
Masters (Masters Women)
#0 / 6539
Top 21%
Division (F45-49)
#0 / 1817
Top 23%
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
8:17/mi
25:44
↑ 97↓ 3451.5%
10K· 6.21 mi
7:59/mi
50:32
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:15:28
↑ 67↓ 78
20K· 12.43 mi
8:03/mi
1:40:30
↑ 106↓ 860.1%
Half· 13.11 mi
7:58/mi
1:45:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:06/mi
2:05:34
↑ 66↓ 880.2%
30K· 18.64 mi
8:21/mi
2:31:32
↑ 181↓ 1480.2%
20M
8:23/mi
2:42:56
↑ 64↓ 500.2%
21M
9:21/mi
2:52:17
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:58:19
↑ 17↓ 861.7%
23M
8:12/mi
3:08:35
↑ 23↓ 630.6%
24M
8:05/mi
3:16:40
↓ 821.3%
40K· 24.85 mi
7:57/mi
3:23:28
↓ 200.3%
25.2M
8:45/mi
3:26:29
↑ 13↓ 160.2%
Finish· 26.22 mi
7:46/mi
3:34:24
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:56
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:48:28
Pace8:16 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5825:448:1725:44
8:17
-
10K
6.21 mi11:42:4650:328:0824:48
7:59
-0:18
15K
9.32 mi12:07:421:15:288:0624:56
8:02
+0:03
20K
12.43 mi12:32:441:40:308:0525:02
8:03
+0:01
Half
13.11 mi12:38:101:45:568:055:26
7:58
-0:05
25K
15.53 mi12:57:482:05:348:0519:38
8:06
+0:08
30K
18.64 mi13:23:462:31:328:0825:58
8:21
+0:15
20M
20.00 mi13:35:102:42:568:0911:24
8:23
+0:02
21M
21.00 mi13:44:312:52:178:129:21
9:21
+0:58
35K
21.75 mi13:50:332:58:198:126:02
8:04
-1:17
23M
23.00 mi14:00:493:08:358:1210:16
8:12
+0:08
24M
24.00 mi14:08:543:16:408:128:05
8:05
-0:07
40K
24.85 mi14:15:423:23:288:116:48
7:57
-0:08
25.2M
25.20 mi14:18:433:26:298:123:01
8:45
+0:48
Finish
26.22 mi14:26:383:34:248:117:55
7:46
-0:59

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

7:46 /mi

Average Pace

8:11 /mi

Slowest Pace

9:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:55

4% of race

Time at Steady Pace

2:11:01

61% of race

Time at Slower Pace

1:15:28

35% of race

Average Pace: 8:11 /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 mi11:17:5825:448:1725:44
8:17
#16025
10K
6.21 mi11:42:4650:328:0824:48
7:59
#15328
15K
9.32 mi12:07:421:15:288:0624:56
8:02
#15106
20K
12.43 mi12:32:441:40:308:0525:02
8:03
#14769
Half
13.11 mi12:38:101:45:568:055:26
7:58
#14737
25K
15.53 mi12:57:482:05:348:0519:38
8:06
#14528
30K
18.64 mi13:23:462:31:328:0825:58
8:21
#14326
20M
20.00 mi13:35:102:42:568:0911:24
8:23
#14198
21M
21.00 mi13:44:312:52:178:129:21
9:21
#14247
35K
21.75 mi13:50:332:58:198:126:02
8:04
#14163
23M
23.00 mi14:00:493:08:358:1210:16
8:12
#13961
24M
24.00 mi14:08:543:16:408:128:05
8:05
#13834
40K
24.85 mi14:15:423:23:288:116:48
7:57
#13658
25.2M
25.20 mi14:18:433:26:298:123:01
8:45
#13601
Finish
26.22 mi14:26:383:34:248:117:55
7:46
#13465
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi160255298529814595(Top 55%)4438(Top 39%)4438(Top 244%)
10K6.21 mi3.10 mi15328+6974857+4414857+44114691(Top 55%)4474(Top 39%)4474(Top 246%)
15K9.32 mi3.11 mi15106+2224728+1294728+12914595(Top 55%)4438(Top 39%)4438(Top 244%)
20K12.43 mi3.11 mi14769+3374539+1894539+18913907(Top 52%)4054(Top 35%)4054(Top 223%)
Half13.11 mi0.68 mi14737+324519+204519+2014112(Top 53%)4143(Top 36%)4143(Top 228%)
25K15.53 mi2.42 mi14528+2094416+1034416+10313503(Top 51%)3924(Top 34%)3924(Top 216%)
30K18.64 mi3.11 mi14326+2024347+694347+6913413(Top 50%)3981(Top 35%)3981(Top 219%)
20M20.00 mi1.36 mi14198+1284292+554292+5512976(Top 49%)3845(Top 34%)3845(Top 212%)
21M21.00 mi1.00 mi14247-494344-524344-5215259(Top 57%)5196(Top 45%)5196(Top 286%)
35K21.75 mi0.75 mi14163+844306+384306+3812620(Top 47%)3781(Top 33%)3781(Top 208%)
23M23.00 mi1.25 mi13961+2024205+1014205+10111214(Top 42%)3126(Top 27%)3126(Top 172%)
24M24.00 mi1.00 mi13834+1274154+514154+5111866(Top 45%)3528(Top 31%)3528(Top 194%)
40K24.85 mi0.85 mi13658+1764057+974057+979786(Top 37%)2562(Top 22%)2562(Top 141%)
25.2M25.20 mi0.35 mi13601+574028+294028+2911116(Top 42%)3274(Top 29%)3274(Top 180%)
Finish26.22 mi1.02 mi13465+1363970+583970+5810494(Top 39%)2947(Top 26%)2947(Top 162%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14595

Females

4438

F45-49

4438

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

14691

Females

4474

F45-49

4474

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14595

Females

4438

F45-49

4438

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13907

Females

4054

F45-49

4054

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14112

Females

4143

F45-49

4143

Half→25K

13.1 - 15.5 mi

Top 51%
×4story building
+66ft-88ft

Overall

13503

Females

3924

F45-49

3924

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

13413

Females

3981

F45-49

3981

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

12976

Females

3845

F45-49

3845

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

15259

Females

5196

F45-49

5196

21M→35K

21.0 - 21.8 mi

Top 47%
×7story building
+17ft-86ft

Overall

12620

Females

3781

F45-49

3781

35K→23M

21.8 - 23.0 mi

Top 42%
×5story building
+23ft-63ft

Overall

11214

Females

3126

F45-49

3126

23M→24M

23.0 - 24.0 mi

Top 45%
×6story building
+12ft-82ft

Overall

11866

Females

3528

F45-49

3528

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9786

Females

2562

F45-49

2562

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11116

Females

3274

F45-49

3274

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10494

Females

2947

F45-49

2947

Passing Analysis

Category:
Athletes Passed
3127
Passed By
567
Net Change
+2560
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16025
5K → 10K78386+697#16025#15328
10K → 15K31492+222#15328#15106
15K → 20K37639+337#15106#14769
20K → Half4513+32#14769#14737
Half → 25K25748+209#14737#14528
25K → 30K28482+202#14528#14326
30K → 20M15628+128#14326#14198
20M → 21M64113-49#14198#14247
21M → 35K9612+84#14247#14163
35K → 23M22018+202#14163#13961
23M → 24M1358+127#13961#13834
24M → 40K1793+176#13834#13658
40K → 25.2M669+57#13658#13601
25.2M → Finish15216+136#13601#13465
TOTALS3127567+2560
📊

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