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BOSTON MARATHON 2023

Talia Brennan

Bib: 12637•F

AB

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 25%
Gender (Female)
#0 / 11423
Top 7%
Division (F18-39)
#0 / 4884
Top 13%
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
7:27/mi
23:10
↑ 97↓ 3451.5%
10K· 6.21 mi
7:23/mi
46:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:09:13
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:32:22
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:37:24
↑ 19↓ 370.5%
25K· 15.53 mi
7:24/mi
1:55:21
↑ 66↓ 880.2%
30K· 18.64 mi
7:29/mi
2:18:37
↑ 181↓ 1480.2%
20M
7:20/mi
2:28:35
↑ 64↓ 500.2%
21M
7:33/mi
2:36:08
↑ 106↓ 241.6%
35K· 21.75 mi
6:56/mi
2:41:19
↑ 17↓ 861.7%
23M
7:05/mi
2:50:11
↑ 23↓ 630.6%
24M
6:43/mi
2:56:54
↓ 821.3%
40K· 24.85 mi
6:40/mi
3:02:36
↓ 200.3%
25.2M
6:52/mi
3:04:58
↑ 13↓ 160.2%
Finish· 26.22 mi
6:14/mi
3:11:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:37:24
Pace7:26 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:33:55
Pace7:10 /mi
📊Negative Split: 3.6% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0123:107:2723:10
7:27
-
10K
6.21 mi11:13:5846:077:2522:57
7:23
-0:04
15K
9.32 mi11:37:041:09:137:2623:06
7:26
+0:03
20K
12.43 mi12:00:131:32:227:2623:09
7:27
+0:01
Half
13.11 mi12:05:151:37:247:265:02
7:23
-0:04
25K
15.53 mi12:23:121:55:217:2617:57
7:24
+0:01
30K
18.64 mi12:46:282:18:377:2623:16
7:29
+0:05
20M
20.00 mi12:56:262:28:357:269:58
7:20
-0:09
21M
21.00 mi13:03:592:36:087:267:33
7:33
+0:13
35K
21.75 mi13:09:102:41:197:255:11
6:56
-0:37
23M
23.00 mi13:18:022:50:117:248:52
7:05
+0:09
24M
24.00 mi13:24:452:56:547:226:43
6:43
-0:22
40K
24.85 mi13:30:273:02:367:215:42
6:40
-0:03
25.2M
25.20 mi13:32:493:04:587:202:22
6:52
+0:12
Finish
26.22 mi13:39:103:11:197:186:21
6:14
-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

6:14 /mi

Average Pace

7:18 /mi

Slowest Pace

7:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

35:11

18% of race

Time at Steady Pace

2:36:08

82% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:18 /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 mi10:51:0123:107:2723:10
7:27
#9277
10K
6.21 mi11:13:5846:077:2522:57
7:23
#9355
15K
9.32 mi11:37:041:09:137:2623:06
7:26
#9407
20K
12.43 mi12:00:131:32:227:2623:09
7:27
#9264
Half
13.11 mi12:05:151:37:247:265:02
7:23
#9250
25K
15.53 mi12:23:121:55:217:2617:57
7:24
#9030
30K
18.64 mi12:46:282:18:377:2623:16
7:29
#8649
20M
20.00 mi12:56:262:28:357:269:58
7:20
#8387
21M
21.00 mi13:03:592:36:087:267:33
7:33
#8153
35K
21.75 mi13:09:102:41:197:255:11
6:56
#7992
23M
23.00 mi13:18:022:50:117:248:52
7:05
#7681
24M
24.00 mi13:24:452:56:547:226:43
6:43
#7422
40K
24.85 mi13:30:273:02:367:215:42
6:40
#7173
25.2M
25.20 mi13:32:493:04:587:202:22
6:52
#7034
Finish
26.22 mi13:39:103:11:197:186:21
6:14
#6713
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9277151715179649(Top 36%)1682(Top 15%)1682(Top 34%)
10K6.21 mi3.10 mi9355-781550-331550-339499(Top 36%)1616(Top 14%)1616(Top 33%)
15K9.32 mi3.11 mi9407-521580-301580-309649(Top 36%)1682(Top 15%)1682(Top 34%)
20K12.43 mi3.11 mi9264+1431545+351545+358926(Top 34%)1449(Top 13%)1449(Top 30%)
Half13.11 mi0.68 mi9250+141539+61539+69261(Top 35%)1553(Top 14%)1553(Top 32%)
25K15.53 mi2.42 mi9030+2201456+831456+838058(Top 30%)1207(Top 11%)1207(Top 25%)
30K18.64 mi3.11 mi8649+3811356+1001356+1007159(Top 27%)981(Top 9%)981(Top 20%)
20M20.00 mi1.36 mi8387+2621283+731283+735855(Top 22%)670(Top 6%)670(Top 14%)
21M21.00 mi1.00 mi8153+2341211+721211+724858(Top 18%)485(Top 4%)485(Top 10%)
35K21.75 mi0.75 mi7992+1611161+501161+505000(Top 19%)515(Top 5%)515(Top 11%)
23M23.00 mi1.25 mi7681+3111058+1031058+1034255(Top 16%)368(Top 3%)368(Top 8%)
24M24.00 mi1.00 mi7422+259996+62996+623239(Top 12%)240(Top 2%)240(Top 5%)
40K24.85 mi0.85 mi7173+249928+68928+682236(Top 8%)162(Top 1%)162(Top 3%)
25.2M25.20 mi0.35 mi7034+139901+27901+271393(Top 5%)82(Top 0.7%)82(Top 2%)
Finish26.22 mi1.02 mi6713+321812+89812+891405(Top 5%)76(Top 0.7%)76(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9649

Females

1682

F18-39

1682

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9499

Females

1616

F18-39

1616

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9649

Females

1682

F18-39

1682

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

8926

Females

1449

F18-39

1449

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9261

Females

1553

F18-39

1553

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

8058

Females

1207

F18-39

1207

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7159

Females

981

F18-39

981

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5855

Females

670

F18-39

670

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

4858

Females

485

F18-39

485

21M→35K

21.0 - 21.8 mi

Top 19%
×7story building
+17ft-86ft

Overall

5000

Females

515

F18-39

515

35K→23M

21.8 - 23.0 mi

Top 16%
×5story building
+23ft-63ft

Overall

4255

Females

368

F18-39

368

23M→24M

23.0 - 24.0 mi

Top 12%
×6story building
+12ft-82ft

Overall

3239

Females

240

F18-39

240

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2236

Females

162

F18-39

162

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1393

Females

82

F18-39

82

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2story building
+22ft-21ft

Overall

1405

Females

76

F18-39

76

Passing Analysis

Category:
Athletes Passed
3198
Passed By
634
Net Change
+2564
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9277
5K → 10K231309-78#9277#9355
10K → 15K133185-52#9355#9407
15K → 20K21572+143#9407#9264
20K → Half3319+14#9264#9250
Half → 25K24020+220#9250#9030
25K → 30K40019+381#9030#8649
30K → 20M2697+262#8649#8387
20M → 21M2340+234#8387#8153
21M → 35K1610+161#8153#7992
35K → 23M3121+311#7992#7681
23M → 24M2612+259#7681#7422
24M → 40K2490+249#7422#7173
40K → 25.2M1390+139#7173#7034
25.2M → Finish3210+321#7034#6713
TOTALS3198634+2564
📊

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