Catherine Song

Bib: 16378F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 30%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:57
Rank: #11529
Start5K
7:43/mi
23:57 split
10K· 6.21 mi
47:38
Rank: #11485 (+44)
5K10K
7:37/mi
23:41 split
15K· 9.32 mi
1:11:49
Rank: #11835 (-350)
10K15K
7:47/mi
24:11 split
20K· 12.43 mi
1:35:03
Rank: #11093 (+742)
15K20K
7:29/mi
23:14 split
Half· 13.11 mi
1:40:01
Rank: #10969 (+124)
20KHalf
7:17/mi
4:58 split
25K· 15.53 mi
1:57:55
Rank: #10416 (+553)
Half25K
7:23/mi
17:54 split
30K· 18.64 mi
2:20:49
Rank: #9625 (+791)
25K30K
7:22/mi
22:54 split
20M
2:30:43
Rank: #9242 (+383)
30K20M
7:17/mi
9:54 split
21M
2:38:21
Rank: #8964 (+278)
20M21M
7:38/mi
7:38 split
35K· 21.75 mi
2:43:39
Rank: #8833 (+131)
21M35K
7:05/mi
5:18 split
23M
2:52:57
Rank: #8617 (+216)
35K23M
7:26/mi
9:18 split
24M
3:00:11
Rank: #8454 (+163)
23M24M
7:14/mi
7:14 split
40K· 24.85 mi
3:06:26
Rank: #8316 (+138)
24M40K
7:19/mi
6:15 split
25.2M
3:09:06
Rank: #8250 (+66)
40K25.2M
7:44/mi
2:40 split
Finish· 26.22 mi
3:16:20
Rank: #8116 (+134)
25.2MFinish
7:06/mi
7:14 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:40:01
Pace7:38 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:19
Pace7:21 /mi
📊Negative Split: 3.7% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0423:577:4323:57
7:43
-
10K
6.21 mi11:37:4547:387:4023:41
7:37
-0:06
15K
9.32 mi12:01:561:11:497:4224:11
7:47
+0:10
20K
12.43 mi12:25:101:35:037:3923:14
7:29
-0:18
Half
13.11 mi12:30:081:40:017:384:58
7:17
-0:12
25K
15.53 mi12:48:021:57:557:3517:54
7:23
+0:06
30K
18.64 mi13:10:562:20:497:3322:54
7:22
-0:01
20M
20.00 mi13:20:502:30:437:329:54
7:17
-0:05
21M
21.00 mi13:28:282:38:217:327:38
7:38
+0:21
35K
21.75 mi13:33:462:43:397:315:18
7:05
-0:33
23M
23.00 mi13:43:042:52:577:319:18
7:26
+0:21
24M
24.00 mi13:50:183:00:117:307:14
7:14
-0:12
40K
24.85 mi13:56:333:06:267:306:15
7:19
+0:05
25.2M
25.20 mi13:59:133:09:067:302:40
7:44
+0:25
Finish
26.22 mi14:06:273:16:207:307:14
7:06
-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

7:05 /mi

Average Pace

7:30 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:30:59

46% of race

Time at Steady Pace

1:45:21

54% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi11:14:0423:577:4323:57
7:43
#11529
10K
6.21 mi11:37:4547:387:4023:41
7:37
#11485
15K
9.32 mi12:01:561:11:497:4224:11
7:47
#11835
20K
12.43 mi12:25:101:35:037:3923:14
7:29
#11093
Half
13.11 mi12:30:081:40:017:384:58
7:17
#10969
25K
15.53 mi12:48:021:57:557:3517:54
7:23
#10416
30K
18.64 mi13:10:562:20:497:3322:54
7:22
#9625
20M
20.00 mi13:20:502:30:437:329:54
7:17
#9242
21M
21.00 mi13:28:282:38:217:327:38
7:38
#8964
35K
21.75 mi13:33:462:43:397:315:18
7:05
#8833
23M
23.00 mi13:43:042:52:577:319:18
7:26
#8617
24M
24.00 mi13:50:183:00:117:307:14
7:14
#8454
40K
24.85 mi13:56:333:06:267:306:15
7:19
#8316
25.2M
25.20 mi13:59:133:09:067:302:40
7:44
#8250
Finish
26.22 mi14:06:273:16:207:307:14
7:06
#8116
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi115292602260212592(Top 47%)3227(Top 28%)3227(Top 66%)
10K6.21 mi3.10 mi11485+442591+112591+1111537(Top 43%)2613(Top 23%)2613(Top 54%)
15K9.32 mi3.11 mi11835-3502800-2092800-20912592(Top 47%)3227(Top 28%)3227(Top 66%)
20K12.43 mi3.11 mi11093+7422377+4232377+4239154(Top 34%)1546(Top 14%)1546(Top 32%)
Half13.11 mi0.68 mi10969+1242316+612316+618504(Top 32%)1283(Top 11%)1283(Top 26%)
25K15.53 mi2.42 mi10416+5532053+2632053+2637895(Top 30%)1153(Top 10%)1153(Top 24%)
30K18.64 mi3.11 mi9625+7911723+3301723+3306439(Top 24%)749(Top 7%)749(Top 15%)
20M20.00 mi1.36 mi9242+3831611+1121611+1125590(Top 21%)603(Top 5%)603(Top 12%)
21M21.00 mi1.00 mi8964+2781517+941517+945313(Top 20%)622(Top 5%)622(Top 13%)
35K21.75 mi0.75 mi8833+1311467+501467+505871(Top 22%)734(Top 6%)734(Top 15%)
23M23.00 mi1.25 mi8617+2161414+531414+536054(Top 23%)837(Top 7%)837(Top 17%)
24M24.00 mi1.00 mi8454+1631374+401374+405981(Top 22%)889(Top 8%)889(Top 18%)
40K24.85 mi0.85 mi8316+1381341+331341+335561(Top 21%)837(Top 7%)837(Top 17%)
25.2M25.20 mi0.35 mi8250+661331+101331+105142(Top 19%)787(Top 7%)787(Top 16%)
Finish26.22 mi1.02 mi8116+1341296+351296+355844(Top 22%)1020(Top 9%)1020(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12592

Females

3227

F18-39

3227

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11537

Females

2613

F18-39

2613

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12592

Females

3227

F18-39

3227

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9154

Females

1546

F18-39

1546

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8504

Females

1283

F18-39

1283

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

7895

Females

1153

F18-39

1153

25K→30K

15.5 - 18.6 mi

Top 24%
×9story building
+181ft-148ft

Overall

6439

Females

749

F18-39

749

30K→20M

18.6 - 20.0 mi

Top 21%
×5story building
+64ft-50ft

Overall

5590

Females

603

F18-39

603

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5313

Females

622

F18-39

622

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

5871

Females

734

F18-39

734

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6054

Females

837

F18-39

837

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

5981

Females

889

F18-39

889

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5561

Females

837

F18-39

837

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5142

Females

787

F18-39

787

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

5844

Females

1020

F18-39

1020

Passing Analysis

Category:
Athletes Passed
4163*
Passed By
750
Net Change
+3413
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11529
5K10K319275+44#11529#11485
10K15K83433-350#11485#11835
15K20K7486+742#11835#11093
20KHalf1240+124#11093#10969
Half25K5530+553#10969#10416
25K30K792*1+791#10416#9625
30K20M3830+383#9625#9242
20M21M2813+278#9242#8964
21M35K1321+131#8964#8833
35K23M2193+216#8833#8617
23M24M1696+163#8617#8454
24M40K1457+138#8454#8316
40K25.2M682+66#8316#8250
25.2MFinish14713+134#8250#8116
TOTALS4163*750+3413

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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