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BOSTON MARATHON 2025

Teri Bossard

AL

Bib: 23215 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 41%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:40/mi
26:56
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:55/mi
54:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:03/mi
1:22:45
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:57/mi
1:50:33
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:26/mi
1:56:18
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:53/mi
2:17:50
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:50/mi
2:45:16
↑ 181↓ 1480.2%
138 ft elev
20M
8:28/mi
2:56:46
↑ 64↓ 500.2%
148 ft elev
21M
8:31/mi
3:05:17
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:37/mi
3:10:59
↑ 17↓ 861.7%
156 ft elev
23M
8:02/mi
3:21:03
↑ 23↓ 630.6%
116 ft elev
24M
7:46/mi
3:28:49
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:03/mi
3:35:42
↓ 200.3%
20 ft elev
25.2M
8:30/mi
3:38:38
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:26/mi
3:46:13
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.

Half Splits

1st Half· via Half
Distance13.11 mi
Time1:56:18
Pace8:52 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:49:55
Pace8:23 /mi
📊Negative Split: 5.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:1326:568:4026:56
8:40
-
10K
6.21 mi11:53:5654:398:4827:43
8:55
+0:15
15K
9.32 mi12:22:021:22:458:5328:06
9:03
+0:08
20K
12.43 mi12:49:501:50:338:5427:48
8:57
-0:06
Half
13.11 mi12:55:351:56:188:525:45
8:26
-0:31
25K
15.53 mi13:17:072:17:508:5221:32
8:53
+0:27
30K
18.64 mi13:44:332:45:168:5227:26
8:50
-0:03
20M
20.00 mi13:56:032:56:468:5011:30
8:28
-0:22
21M
21.00 mi14:04:343:05:178:498:31
8:31
+0:03
35K
21.75 mi14:10:163:10:598:475:42
7:37
-0:54
23M
23.00 mi14:20:203:21:038:4410:04
8:02
+0:25
24M
24.00 mi14:28:063:28:498:427:46
7:46
-0:16
40K
24.85 mi14:34:593:35:428:416:53
8:03
+0:17
25.2M
25.20 mi14:37:553:38:388:412:56
8:30
+0:27
Finish
26.22 mi14:45:303:46:138:387:35
7:26
-1:04

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

7:26 /mi

Average Pace

8:38 /mi

Slowest Pace

9:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

38:00

17% of race

Time at Steady Pace

55:38

25% of race

Time at Slower Pace

2:12:35

59% of race

Average Pace: 8:38 /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 mi11:26:1326:568:4026:56
8:40
#20867
10K
6.21 mi11:53:5654:398:4827:43
8:55
#21422
15K
9.32 mi12:22:021:22:458:5328:06
9:03
#21697
20K
12.43 mi12:49:501:50:338:5427:48
8:57
#21425
Half
13.11 mi12:55:351:56:188:525:45
8:26
#21277
25K
15.53 mi13:17:072:17:508:5221:32
8:53
#20957
30K
18.64 mi13:44:332:45:168:5227:26
8:50
#20213
20M
20.00 mi13:56:032:56:468:5011:30
8:28
#19759
21M
21.00 mi14:04:343:05:178:498:31
8:31
#19301
35K
21.75 mi14:10:163:10:598:475:42
7:37
#19004
23M
23.00 mi14:20:203:21:038:4410:04
8:02
#18527
24M
24.00 mi14:28:063:28:498:427:46
7:46
#18159
40K
24.85 mi14:34:593:35:428:416:53
8:03
#17877
25.2M
25.20 mi14:37:553:38:388:412:56
8:30
#17723
Finish
26.22 mi14:45:303:46:138:387:35
7:26
#17428
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi208678004800422233(Top 78%)8679(Top 71%)8679(Top 479%)
10K6.21 mi3.10 mi21422-5558285-2818285-28122040(Top 78%)8613(Top 70%)8613(Top 475%)
15K9.32 mi3.11 mi21697-2758430-1458430-14522233(Top 78%)8679(Top 71%)8679(Top 479%)
20K12.43 mi3.11 mi21425+2728276+1548276+15420711(Top 73%)7893(Top 65%)7893(Top 435%)
Half13.11 mi0.68 mi21277+1488186+908186+9018760(Top 66%)6754(Top 55%)6754(Top 373%)
25K15.53 mi2.42 mi20957+3208014+1728014+17219343(Top 68%)7166(Top 59%)7166(Top 395%)
30K18.64 mi3.11 mi20213+7447646+3687646+36816789(Top 59%)5916(Top 48%)5916(Top 326%)
20M20.00 mi1.36 mi19759+4547409+2377409+23713581(Top 48%)4298(Top 35%)4298(Top 237%)
21M21.00 mi1.00 mi19301+4587176+2337176+23310634(Top 37%)2937(Top 24%)2937(Top 162%)
35K21.75 mi0.75 mi19004+2977024+1527024+1529561(Top 34%)2416(Top 20%)2416(Top 133%)
23M23.00 mi1.25 mi18527+4776781+2436781+24310387(Top 37%)2945(Top 24%)2945(Top 162%)
24M24.00 mi1.00 mi18159+3686603+1786603+1789631(Top 34%)2637(Top 22%)2637(Top 145%)
40K24.85 mi0.85 mi17877+2826475+1286475+12810616(Top 37%)3240(Top 26%)3240(Top 179%)
25.2M25.20 mi0.35 mi17723+1546408+676408+678961(Top 32%)2545(Top 21%)2545(Top 140%)
Finish26.22 mi1.02 mi17428+2956272+1366272+1368832(Top 31%)2470(Top 20%)2470(Top 136%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

22233

Females

8679

F45-49

8679

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

22040

Females

8613

F45-49

8613

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

22233

Females

8679

F45-49

8679

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20711

Females

7893

F45-49

7893

20K→Half

12.4 - 13.1 mi

Top 66%
×2story building
+19ft-37ft

Overall

18760

Females

6754

F45-49

6754

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

19343

Females

7166

F45-49

7166

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16789

Females

5916

F45-49

5916

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13581

Females

4298

F45-49

4298

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10634

Females

2937

F45-49

2937

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9561

Females

2416

F45-49

2416

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

10387

Females

2945

F45-49

2945

23M→24M

23.0 - 24.0 mi

Top 34%
×6story building
+12ft-82ft

Overall

9631

Females

2637

F45-49

2637

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

10616

Females

3240

F45-49

3240

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8961

Females

2545

F45-49

2545

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8832

Females

2470

F45-49

2470

Passing Analysis

Category:
Athletes Passed
4583
Passed By
1144
Net Change
+3439
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20867
5K → 10K105660-555#20867#21422
10K → 15K124399-275#21422#21697
15K → 20K34169+272#21697#21425
20K → Half1513+148#21425#21277
Half → 25K33010+320#21277#20957
25K → 30K7462+744#20957#20213
30K → 20M4540+454#20213#19759
20M → 21M4580+458#19759#19301
21M → 35K2970+297#19301#19004
35K → 23M4781+477#19004#18527
23M → 24M3680+368#18527#18159
24M → 40K2820+282#18159#17877
40K → 25.2M1540+154#17877#17723
25.2M → Finish2950+295#17723#17428
TOTALS45831144+3439
📊

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