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BOSTON MARATHON 2023

Christine Alfano

Bib: 27068•F

MN

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
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
10:25/mi
32:22
↑ 97↓ 3451.5%
10K· 6.21 mi
9:49/mi
1:02:53
↑ 79↓ 1380.4%
15K· 9.32 mi
9:40/mi
1:32:55
↑ 67↓ 78
20K· 12.43 mi
9:28/mi
2:02:20
↑ 106↓ 860.1%
Half· 13.11 mi
9:17/mi
2:08:40
↑ 19↓ 370.5%
25K· 15.53 mi
9:22/mi
2:31:22
↑ 66↓ 880.2%
30K· 18.64 mi
9:26/mi
3:00:39
↑ 181↓ 1480.2%
20M
9:24/mi
3:13:26
↑ 64↓ 500.2%
21M
9:26/mi
3:22:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:36/mi
3:29:18
↑ 17↓ 861.7%
23M
8:48/mi
3:40:19
↑ 23↓ 630.6%
24M
8:44/mi
3:49:03
↓ 821.3%
40K· 24.85 mi
8:38/mi
3:56:26
↓ 200.3%
25.2M
9:23/mi
3:59:40
↑ 13↓ 160.2%
Finish· 26.22 mi
8:16/mi
4:08:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:08:40
Pace9:49 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:59:25
Pace9:07 /mi
📊Negative Split: 7.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:5932:2210:2532:22
10:25
-
10K
6.21 mi12:20:301:02:5310:0730:31
9:49
-0:36
15K
9.32 mi12:50:321:32:559:5830:02
9:40
-0:09
20K
12.43 mi13:19:572:02:209:5129:25
9:28
-0:12
Half
13.11 mi13:26:172:08:409:496:20
9:17
-0:11
25K
15.53 mi13:48:592:31:229:4522:42
9:22
+0:05
30K
18.64 mi14:18:163:00:399:4129:17
9:26
+0:04
20M
20.00 mi14:31:033:13:269:4012:47
9:24
-0:02
21M
21.00 mi14:40:293:22:529:409:26
9:26
+0:02
35K
21.75 mi14:46:553:29:189:376:26
8:36
-0:50
23M
23.00 mi14:57:563:40:199:3511:01
8:48
+0:12
24M
24.00 mi15:06:403:49:039:338:44
8:44
-0:04
40K
24.85 mi15:14:033:56:269:317:23
8:38
-0:06
25.2M
25.20 mi15:17:173:59:409:313:14
9:23
+0:45
Finish
26.22 mi15:25:424:08:059:288:25
8:16
-1:07

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

8:16 /mi

Average Pace

9:28 /mi

Slowest Pace

10:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

41:59

17% of race

Time at Steady Pace

1:53:11

46% of race

Time at Slower Pace

1:32:55

37% of race

Average Pace: 9:28 /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 mi11:49:5932:2210:2532:22
10:25
#24509
10K
6.21 mi12:20:301:02:5310:0730:31
9:49
#23893
15K
9.32 mi12:50:321:32:559:5830:02
9:40
#23539
20K
12.43 mi13:19:572:02:209:5129:25
9:28
#23048
Half
13.11 mi13:26:172:08:409:496:20
9:17
#22978
25K
15.53 mi13:48:592:31:229:4522:42
9:22
#22572
30K
18.64 mi14:18:163:00:399:4129:17
9:26
#22033
20M
20.00 mi14:31:033:13:269:4012:47
9:24
#21794
21M
21.00 mi14:40:293:22:529:409:26
9:26
#21533
35K
21.75 mi14:46:553:29:189:376:26
8:36
#21364
23M
23.00 mi14:57:563:40:199:3511:01
8:48
#21063
24M
24.00 mi15:06:403:49:039:338:44
8:44
#20865
40K
24.85 mi15:14:033:56:269:317:23
8:38
#20673
25.2M
25.20 mi15:17:173:59:409:313:14
9:23
#20595
Finish
26.22 mi15:25:424:08:059:288:25
8:16
#20408
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24509101571015722718(Top 85%)9196(Top 81%)9196(Top 188%)
10K6.21 mi3.10 mi23893+6169836+3219836+32123324(Top 88%)9525(Top 83%)9525(Top 195%)
15K9.32 mi3.11 mi23539+3549632+2049632+20422718(Top 85%)9196(Top 81%)9196(Top 188%)
20K12.43 mi3.11 mi23048+4919370+2629370+26221463(Top 81%)8505(Top 74%)8505(Top 174%)
Half13.11 mi0.68 mi22978+709332+389332+3821457(Top 81%)8486(Top 74%)8486(Top 174%)
25K15.53 mi2.42 mi22572+4069141+1919141+19120395(Top 77%)7923(Top 69%)7923(Top 162%)
30K18.64 mi3.11 mi22033+5398851+2908851+29019166(Top 72%)7290(Top 64%)7290(Top 149%)
20M20.00 mi1.36 mi21794+2398729+1228729+12218512(Top 70%)7042(Top 62%)7042(Top 144%)
21M21.00 mi1.00 mi21533+2618595+1348595+13415692(Top 59%)5463(Top 48%)5463(Top 112%)
35K21.75 mi0.75 mi21364+1698512+838512+8315922(Top 60%)5657(Top 50%)5657(Top 116%)
23M23.00 mi1.25 mi21063+3018367+1458367+14515027(Top 56%)5198(Top 46%)5198(Top 106%)
24M24.00 mi1.00 mi20865+1988267+1008267+10015893(Top 60%)5758(Top 50%)5758(Top 118%)
40K24.85 mi0.85 mi20673+1928172+958172+9514220(Top 53%)4882(Top 43%)4882(Top 100%)
25.2M25.20 mi0.35 mi20595+788129+438129+4314704(Top 55%)5170(Top 45%)5170(Top 106%)
Finish26.22 mi1.02 mi20408+1878032+978032+9713893(Top 52%)4696(Top 41%)4696(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

22718

Females

9196

F18-39

9196

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

23324

Females

9525

F18-39

9525

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

22718

Females

9196

F18-39

9196

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21463

Females

8505

F18-39

8505

20K→Half

12.4 - 13.1 mi

Top 81%
×2story building
+19ft-37ft

Overall

21457

Females

8486

F18-39

8486

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

20395

Females

7923

F18-39

7923

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

19166

Females

7290

F18-39

7290

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

18512

Females

7042

F18-39

7042

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

15692

Females

5463

F18-39

5463

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

15922

Females

5657

F18-39

5657

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15027

Females

5198

F18-39

5198

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

15893

Females

5758

F18-39

5758

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

14220

Females

4882

F18-39

4882

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14704

Females

5170

F18-39

5170

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13893

Females

4696

F18-39

4696

Passing Analysis

Category:
Athletes Passed
4148
Passed By
47
Net Change
+4101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24509
5K → 10K64024+616#24509#23893
10K → 15K36612+354#23893#23539
15K → 20K4954+491#23539#23048
20K → Half722+70#23048#22978
Half → 25K4060+406#22978#22572
25K → 30K5401+539#22572#22033
30K → 20M2401+239#22033#21794
20M → 21M2610+261#21794#21533
21M → 35K1690+169#21533#21364
35K → 23M3021+301#21364#21063
23M → 24M1980+198#21063#20865
24M → 40K1931+192#20865#20673
40K → 25.2M780+78#20673#20595
25.2M → Finish1881+187#20595#20408
TOTALS414847+4101
📊

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