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BOSTON MARATHON 2023

Britta Fortson

FL

Bib: 18612 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Masters (Masters Women)
#0 / 6539
Top 12%
Division (F50-54)
#0 / 1207
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:31/mi
23:20
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:37/mi
46:59
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:47/mi
1:11:09
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:51/mi
1:35:33
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:36/mi
1:40:44
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:50/mi
1:59:43
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:01/mi
2:24:37
↑ 181↓ 1480.2%
138 ft elev
20M
7:56/mi
2:35:24
↑ 64↓ 500.2%
148 ft elev
21M
8:43/mi
2:44:07
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:52/mi
2:50:00
↑ 17↓ 861.7%
156 ft elev
23M
8:23/mi
3:00:30
↑ 23↓ 630.6%
116 ft elev
24M
8:13/mi
3:08:43
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:22/mi
3:15:52
↓ 200.3%
20 ft elev
25.2M
9:14/mi
3:19:03
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:18/mi
3:27:30
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:40:447:41 /mi⚡ faster
2nd Half
1:46:468:09 /mi+6.0%
Positive split — 6.0% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
23:207:313.11 mi23:20
7:31
-
10K
46:597:343.10 mi23:39
7:37
+0:06
15K
1:11:097:383.11 mi24:10
7:47
+0:10
20K
1:35:337:413.11 mi24:24
7:51
+0:04
Half(13.11 mi)
1:40:447:410.68 mi5:11
7:36
-0:15
25K
1:59:437:422.42 mi18:59
7:50
+0:14
30K
2:24:377:453.11 mi24:54
8:01
+0:11
20M
2:35:247:461.36 mi10:47
7:56
-0:05
21M
2:44:077:491.00 mi8:43
8:43
+0:47
35K
2:50:007:490.75 mi5:53
7:52
-0:51
23M
3:00:307:511.25 mi10:30
8:23
+0:31
24M
3:08:437:521.00 mi8:13
8:13
-0:10
40K
3:15:527:530.85 mi7:09
8:22
+0:09
25.2M
3:19:037:540.35 mi3:11
9:14
+0:52
Finish(26.22 mi)
3:27:307:551.02 mi8:27
8:18
-0:56
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:31 /mi

Average Pace

7:55 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

52:10

25% of race

Time at Steady Pace

1:49:07

53% of race

Time at Slower Pace

46:13

22% of race

Average Pace: 7:55 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi9732172617261253832053205
10K6.21 mi3.10 mi10576-8442112-3862112-3861145325812581
15K9.32 mi3.11 mi11235-6592457-3452457-3451253832053205
20K12.43 mi3.11 mi11433-1982575-1182575-1181220330853085
Half13.11 mi0.68 mi11403+302567+82567+81107524172417
25K15.53 mi2.42 mi11360+432569-22569-21136226932693
30K18.64 mi3.11 mi11235+1252553+162553+161102626542654
20M20.00 mi1.36 mi11101+1342487+662487+66982721692169
21M21.00 mi1.00 mi11121-202522-352522-351177732833283
35K21.75 mi0.75 mi11124-32534-122534-121116529522952
23M23.00 mi1.25 mi11189-652600-662600-661250037903790
24M24.00 mi1.00 mi11275-862664-642664-641273539753975
40K24.85 mi0.85 mi11304-292705-412705-411248039213921
25.2M25.20 mi0.35 mi11349-452741-362741-361381546264626
Finish26.22 mi1.02 mi11453-1042826-852826-851406547694769

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

12538

Females

3205

F50-54

3205

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11453

Females

2581

F50-54

2581

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

12538

Females

3205

F50-54

3205

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12203

Females

3085

F50-54

3085

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11075

Females

2417

F50-54

2417

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11362

Females

2693

F50-54

2693

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11026

Females

2654

F50-54

2654

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9827

Females

2169

F50-54

2169

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11777

Females

3283

F50-54

3283

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11165

Females

2952

F50-54

2952

35K→23M

21.8 - 23.0 mi

Top 47%
×5story building
+23ft-63ft

Overall

12500

Females

3790

F50-54

3790

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

12735

Females

3975

F50-54

3975

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12480

Females

3921

F50-54

3921

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13815

Females

4626

F50-54

4626

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14065

Females

4769

F50-54

4769

Passing Analysis

Category:
Athletes Passed
1144*
Passed By
2864
Net Change
-1721
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9732
5K → 10K63906-844#9732#10576
10K → 15K37696-659#10576#11235
15K → 20K111309-198#11235#11433
20K → Half4515+30#11433#11403
Half → 25K13188+43#11403#11360
25K → 30K244119+125#11360#11235
30K → 20M165*31+134#11235#11101
20M → 21M7898-20#11101#11121
21M → 35K4043-3#11121#11124
35K → 23M68133-65#11124#11189
23M → 24M42128-86#11189#11275
24M → 40K5685-29#11275#11304
40K → 25.2M2166-45#11304#11349
25.2M → Finish43147-104#11349#11453
TOTALS1144*2864-1721

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

Passing Charts

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