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BOSTON MARATHON 2023

Beatrice Song

Bib: 23497•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 20%
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
9:10/mi
28:30
↑ 97↓ 3451.5%
10K· 6.21 mi
9:07/mi
56:51
↑ 79↓ 1380.4%
15K· 9.32 mi
9:05/mi
1:25:04
↑ 67↓ 78
20K· 12.43 mi
9:07/mi
1:53:24
↑ 106↓ 860.1%
Half· 13.11 mi
8:33/mi
1:59:14
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:20:40
↑ 66↓ 880.2%
30K· 18.64 mi
8:53/mi
2:48:15
↑ 181↓ 1480.2%
20M
8:52/mi
3:00:18
↑ 64↓ 500.2%
21M
9:32/mi
3:09:50
↑ 106↓ 241.6%
35K· 21.75 mi
8:05/mi
3:15:53
↑ 17↓ 861.7%
23M
8:48/mi
3:26:54
↑ 23↓ 630.6%
24M
8:23/mi
3:35:17
↓ 821.3%
40K· 24.85 mi
8:36/mi
3:42:38
↓ 200.3%
25.2M
9:28/mi
3:45:54
↑ 13↓ 160.2%
Finish· 26.22 mi
8:42/mi
3:54:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:59:14
Pace9:06 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:55:32
Pace8:49 /mi
📊Negative Split: 3.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0828:309:1028:30
9:10
-
10K
6.21 mi11:52:2956:519:0928:21
9:07
-0:03
15K
9.32 mi12:20:421:25:049:0828:13
9:05
-0:02
20K
12.43 mi12:49:021:53:249:0728:20
9:07
+0:02
Half
13.11 mi12:54:521:59:149:065:50
8:33
-0:34
25K
15.53 mi13:16:182:20:409:0321:26
8:50
+0:17
30K
18.64 mi13:43:532:48:159:0227:35
8:53
+0:03
20M
20.00 mi13:55:563:00:189:0112:03
8:52
-0:01
21M
21.00 mi14:05:283:09:509:029:32
9:32
+0:40
35K
21.75 mi14:11:313:15:539:006:03
8:05
-1:27
23M
23.00 mi14:22:323:26:549:0011:01
8:48
+0:43
24M
24.00 mi14:30:553:35:178:588:23
8:23
-0:25
40K
24.85 mi14:38:163:42:388:577:21
8:36
+0:13
25.2M
25.20 mi14:41:323:45:548:583:16
9:28
+0:52
Finish
26.22 mi14:50:243:54:468:588:52
8:42
-0:46

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

8:05 /mi

Average Pace

8:58 /mi

Slowest Pace

9:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:34

46% of race

Time at Steady Pace

2:06:12

54% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:57 /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 mi11:24:0828:309:1028:30
9:10
#21135
10K
6.21 mi11:52:2956:519:0928:21
9:07
#21240
15K
9.32 mi12:20:421:25:049:0828:13
9:05
#21133
20K
12.43 mi12:49:021:53:249:0728:20
9:07
#20892
Half
13.11 mi12:54:521:59:149:065:50
8:33
#20756
25K
15.53 mi13:16:182:20:409:0321:26
8:50
#20378
30K
18.64 mi13:43:532:48:159:0227:35
8:53
#19712
20M
20.00 mi13:55:563:00:189:0112:03
8:52
#19437
21M
21.00 mi14:05:283:09:509:029:32
9:32
#19225
35K
21.75 mi14:11:313:15:539:006:03
8:05
#19039
23M
23.00 mi14:22:323:26:549:0011:01
8:48
#18807
24M
24.00 mi14:30:553:35:178:588:23
8:23
#18596
40K
24.85 mi14:38:163:42:388:577:21
8:36
#18434
25.2M
25.20 mi14:41:323:45:548:583:16
9:28
#18383
Finish
26.22 mi14:50:243:54:468:588:52
8:42
#18332
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi211358438843820869(Top 78%)8163(Top 71%)8163(Top 1549%)
10K6.21 mi3.10 mi21240-1058440-28440-221376(Top 80%)8481(Top 74%)8481(Top 1609%)
15K9.32 mi3.11 mi21133+1078351+898351+8920869(Top 78%)8163(Top 71%)8163(Top 1549%)
20K12.43 mi3.11 mi20892+2418214+1378214+13720224(Top 76%)7793(Top 68%)7793(Top 1479%)
Half13.11 mi0.68 mi20756+1368137+778137+7718064(Top 68%)6528(Top 57%)6528(Top 1239%)
25K15.53 mi2.42 mi20378+3787920+2177920+21718185(Top 68%)6657(Top 58%)6657(Top 1263%)
30K18.64 mi3.11 mi19712+6667558+3627558+36216550(Top 62%)5821(Top 51%)5821(Top 1105%)
20M20.00 mi1.36 mi19437+2757412+1467412+14615859(Top 60%)5495(Top 48%)5495(Top 1043%)
21M21.00 mi1.00 mi19225+2127297+1157297+11516152(Top 61%)5719(Top 50%)5719(Top 1085%)
35K21.75 mi0.75 mi19039+1867197+1007197+10012783(Top 48%)3890(Top 34%)3890(Top 738%)
23M23.00 mi1.25 mi18807+2327077+1207077+12015025(Top 56%)5196(Top 45%)5196(Top 986%)
24M24.00 mi1.00 mi18596+2116962+1156962+11513827(Top 52%)4585(Top 40%)4585(Top 870%)
40K24.85 mi0.85 mi18434+1626884+786884+7813994(Top 53%)4757(Top 42%)4757(Top 903%)
25.2M25.20 mi0.35 mi18383+516862+226862+2215164(Top 57%)5418(Top 47%)5418(Top 1028%)
Finish26.22 mi1.02 mi18332+516841+216841+2116527(Top 62%)6118(Top 54%)6118(Top 1161%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20869

Females

8163

F60-64

8163

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21376

Females

8481

F60-64

8481

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20869

Females

8163

F60-64

8163

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

20224

Females

7793

F60-64

7793

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18064

Females

6528

F60-64

6528

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18185

Females

6657

F60-64

6657

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

16550

Females

5821

F60-64

5821

30K→20M

18.6 - 20.0 mi

Top 60%
×5story building
+64ft-50ft

Overall

15859

Females

5495

F60-64

5495

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

16152

Females

5719

F60-64

5719

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

12783

Females

3890

F60-64

3890

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15025

Females

5196

F60-64

5196

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

13827

Females

4585

F60-64

4585

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

13994

Females

4757

F60-64

4757

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15164

Females

5418

F60-64

5418

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

16527

Females

6118

F60-64

6118

Passing Analysis

Category:
Athletes Passed
3354
Passed By
551
Net Change
+2803
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21135
5K → 10K231336-105#21135#21240
10K → 15K216109+107#21240#21133
15K → 20K28645+241#21133#20892
20K → Half1393+136#20892#20756
Half → 25K3846+378#20756#20378
25K → 30K6671+666#20378#19712
30K → 20M2783+275#19712#19437
20M → 21M2186+212#19437#19225
21M → 35K1860+186#19225#19039
35K → 23M2375+232#19039#18807
23M → 24M2121+211#18807#18596
24M → 40K1653+162#18596#18434
40K → 25.2M543+51#18434#18383
25.2M → Finish8130+51#18383#18332
TOTALS3354551+2803
📊

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