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BOSTON MARATHON 2023

Xianghong Song

Bib: 16827•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 47%
Gender (Female)
#0 / 11423
Top 30%
Masters (Masters Women)
#0 / 6539
Top 16%
Division (F55-59)
#0 / 815
Top 5%
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
7:48/mi
24:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
48:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:41/mi
1:11:58
↑ 67↓ 78
20K· 12.43 mi
7:40/mi
1:35:47
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:40:58
↑ 19↓ 370.5%
25K· 15.53 mi
7:44/mi
1:59:43
↑ 66↓ 880.2%
30K· 18.64 mi
8:09/mi
2:25:01
↑ 181↓ 1480.2%
20M
8:26/mi
2:36:28
↑ 64↓ 500.2%
21M
9:10/mi
2:45:38
↑ 106↓ 241.6%
35K· 21.75 mi
8:01/mi
2:51:38
↑ 17↓ 861.7%
23M
8:42/mi
3:02:31
↑ 23↓ 630.6%
24M
8:31/mi
3:11:02
↓ 821.3%
40K· 24.85 mi
8:44/mi
3:18:30
↓ 200.3%
25.2M
9:28/mi
3:21:46
↑ 13↓ 160.2%
Finish· 26.22 mi
8:51/mi
3:30:47
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:58
Pace7:42 /mi
2nd Half
Distance13.11 mi
Time1:49:49
Pace8:23 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5724:157:4824:15
7:48
-
10K
6.21 mi11:38:4948:077:4523:52
7:41
-0:07
15K
9.32 mi12:02:401:11:587:4323:51
7:41
0:00
20K
12.43 mi12:26:291:35:477:4223:49
7:40
-0:01
Half
13.11 mi12:31:401:40:587:425:11
7:36
-0:04
25K
15.53 mi12:50:251:59:437:4218:45
7:44
+0:08
30K
18.64 mi13:15:432:25:017:4725:18
8:09
+0:25
20M
20.00 mi13:27:102:36:287:4911:27
8:26
+0:17
21M
21.00 mi13:36:202:45:387:539:10
9:10
+0:44
35K
21.75 mi13:42:202:51:387:546:00
8:01
-1:09
23M
23.00 mi13:53:133:02:317:5610:53
8:42
+0:41
24M
24.00 mi14:01:443:11:027:588:31
8:31
-0:11
40K
24.85 mi14:09:123:18:307:597:28
8:44
+0:13
25.2M
25.20 mi14:12:283:21:468:003:16
9:28
+0:44
Finish
26.22 mi14:21:293:30:478:039:01
8:51
-0:37

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

7:36 /mi

Average Pace

8:03 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:43

57% of race

Time at Steady Pace

42:45

20% of race

Time at Slower Pace

48:19

23% of race

Average Pace: 8:02 /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 mi11:14:5724:157:4824:15
7:48
#12406
10K
6.21 mi11:38:4948:077:4523:52
7:41
#12220
15K
9.32 mi12:02:401:11:587:4323:51
7:41
#11979
20K
12.43 mi12:26:291:35:477:4223:49
7:40
#11593
Half
13.11 mi12:31:401:40:587:425:11
7:36
#11552
25K
15.53 mi12:50:251:59:437:4218:45
7:44
#11361
30K
18.64 mi13:15:432:25:017:4725:18
8:09
#11446
20M
20.00 mi13:27:102:36:287:4911:27
8:26
#11569
21M
21.00 mi13:36:202:45:387:539:10
9:10
#11758
35K
21.75 mi13:42:202:51:387:546:00
8:01
#11788
23M
23.00 mi13:53:133:02:317:5610:53
8:42
#11939
24M
24.00 mi14:01:443:11:027:588:31
8:31
#12076
40K
24.85 mi14:09:123:18:307:597:28
8:44
#12174
25.2M
25.20 mi14:12:283:21:468:003:16
9:28
#12241
Finish
26.22 mi14:21:293:30:478:039:01
8:51
#12467
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi124063105310511667(Top 44%)2718(Top 24%)2718(Top 333%)
10K6.21 mi3.10 mi12220+1862984+1212984+12112086(Top 45%)2920(Top 26%)2920(Top 358%)
15K9.32 mi3.11 mi11979+2412882+1022882+10211667(Top 44%)2718(Top 24%)2718(Top 333%)
20K12.43 mi3.11 mi11593+3862680+2022680+20210657(Top 40%)2237(Top 20%)2237(Top 274%)
Half13.11 mi0.68 mi11552+412654+262654+2611097(Top 42%)2439(Top 21%)2439(Top 299%)
25K15.53 mi2.42 mi11361+1912570+842570+8410588(Top 40%)2283(Top 20%)2283(Top 280%)
30K18.64 mi3.11 mi11446-852663-932663-9311959(Top 45%)3165(Top 28%)3165(Top 388%)
20M20.00 mi1.36 mi11569-1232751-882751-8813175(Top 49%)3944(Top 35%)3944(Top 484%)
21M21.00 mi1.00 mi11758-1892879-1282879-12814309(Top 54%)4657(Top 41%)4657(Top 571%)
35K21.75 mi0.75 mi11788-302908-292908-2912306(Top 46%)3597(Top 31%)3597(Top 441%)
23M23.00 mi1.25 mi11939-1513023-1153023-11514336(Top 54%)4809(Top 42%)4809(Top 590%)
24M24.00 mi1.00 mi12076-1373126-1033126-10314569(Top 55%)4991(Top 44%)4991(Top 612%)
40K24.85 mi0.85 mi12174-983199-733199-7314728(Top 55%)5141(Top 45%)5141(Top 631%)
25.2M25.20 mi0.35 mi12241-673239-403239-4015064(Top 57%)5318(Top 47%)5318(Top 653%)
Finish26.22 mi1.02 mi12467-2263388-1493388-14917269(Top 65%)6510(Top 57%)6510(Top 799%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

11667

Females

2718

F55-59

2718

5K→10K

3.1 - 6.2 mi

Top 45%
×5story building
+79ft-138ft

Overall

12086

Females

2920

F55-59

2920

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

11667

Females

2718

F55-59

2718

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

10657

Females

2237

F55-59

2237

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11097

Females

2439

F55-59

2439

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

10588

Females

2283

F55-59

2283

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

11959

Females

3165

F55-59

3165

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

13175

Females

3944

F55-59

3944

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14309

Females

4657

F55-59

4657

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12306

Females

3597

F55-59

3597

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

14336

Females

4809

F55-59

4809

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

14569

Females

4991

F55-59

4991

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14728

Females

5141

F55-59

5141

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15064

Females

5318

F55-59

5318

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17269

Females

6510

F55-59

6510

Passing Analysis

Category:
Athletes Passed
1896
Passed By
1957
Net Change
-61
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12406
5K → 10K421235+186#12406#12220
10K → 15K33695+241#12220#11979
15K → 20K42034+386#11979#11593
20K → Half5615+41#11593#11552
Half → 25K22332+191#11552#11361
25K → 30K157242-85#11361#11446
30K → 20M58181-123#11446#11569
20M → 21M41230-189#11569#11758
21M → 35K3161-30#11758#11788
35K → 23M52203-151#11788#11939
23M → 24M32169-137#11939#12076
24M → 40K34132-98#12076#12174
40K → 25.2M1481-67#12174#12241
25.2M → Finish21247-226#12241#12467
TOTALS18961957-61
📊

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