San Francisco Marathon logo
SF MARATHON 1ST HALF 2026

Alexander Zhou

Palo Alto, CA

Bib: 17123 M 30

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6575
Top 44%
Gender (Male)
#0 / 3619
Division (M30-34)
#0 / 772
Race Day Weather
59°/49°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
2M
10:32/mi
21:04
→ flat
12 ft elev
4M
9:59/mi
41:02
↑ 67↓ 69
10 ft elev
6M
9:57/mi
1:00:57
↑ 1231.1%
126 ft elev
8M
9:56/mi
1:20:48
↑ 166↓ 531.1%
246 ft elev
9.6M
9:56/mi
1:36:41
↑ 68↓ 1931.5%
126 ft elev
10M
17:31/mi
1:43:41
↓ 241.1%
90 ft elev
10.5M
4:32/mi
1:45:57
↓ 732.7%
18 ft elev
12M
14:36/mi
2:07:51
↑ 2803.2%
272 ft elev
Finish· 13.11 mi
10:15/mi
2:19:13
↑ 14↓ 891.3%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6M
1:00:5710:10 /mi⚡ faster
2nd Half
1:18:1611:01 /mi+28.4%
Positive split — 28.4% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:02:2221:0410:3221:04
10:32
-
4M
4.00 mi07:22:2041:0210:1619:58
9:59
-0:33
6M
6.00 mi07:42:151:00:5710:1019:55
9:57
-0:02
8M
8.00 mi08:02:061:20:4810:0619:51
9:56
-0:01
9.6M
9.60 mi08:17:591:36:4110:0415:53
9:56
0:00
10M
10.00 mi08:24:591:43:4110:227:00
17:31
+7:35
10.5M
10.50 mi08:27:151:45:5710:052:16
4:32
-12:59
12M
12.00 mi08:49:092:07:5110:3921:54
14:36
+10:04
Finish
13.11 mi09:00:312:19:1310:3711:22
10:15
-4:21

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

4:32 /mi

Average Pace

10:37 /mi

Slowest Pace

17:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

2:16

2% of race

Time at Steady Pace

1:48:03

78% of race

Time at Slower Pace

28:54

21% of race

Average Pace: 10:37 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi07:02:2221:0410:3221:04
10:32
#3981
4M
4.00 mi07:22:2041:0210:1619:58
9:59
#3309
6M
6.00 mi07:42:151:00:5710:1019:55
9:57
#3002
8M
8.00 mi08:02:061:20:4810:0619:51
9:56
#2781
9.6M
9.60 mi08:17:591:36:4110:0415:53
9:56
#2922
10M
10.00 mi08:24:591:43:4110:227:00
17:31
#2828
10.5M
10.50 mi08:27:151:45:5710:052:16
4:32
#2804
12M
12.00 mi08:49:092:07:5110:3921:54
14:36
#2869
Finish
13.11 mi09:00:312:19:1310:3711:22
10:15
#2863
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 31%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:16

Segment Time

10:18/mi

Pace

0.90 mi

Distance

Overall

2013

Men

1443

Division

320

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi3981257053732322088460
4M4.00 mi2.00 mi3309+6722210+360449+8827691918400
6M6.00 mi2.00 mi3002+3072054+156425+2426141833379
8M8.00 mi2.00 mi2781+2211952+102408+1723051681359
9.6M9.60 mi1.60 mi2922-1412003-51419-1139112356500
10M10.00 mi0.40 mi2828+941947+56410+921211489323
10.5M10.50 mi0.50 mi2804+241932+15406+419481420317
12M12.00 mi1.50 mi2869-651960-28418-1232322088460
Finish13.11 mi1.11 mi2863+61954+6419-131792067464

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 49%
~flat
+5ft-3ft

Overall

3232

Males

2088

M30-34

461

2M→4M

2.0 - 4.0 mi

Top 42%
×4story building
+67ft-69ft

Overall

2769

Males

1918

M30-34

402

4M→6M

4.0 - 6.0 mi

Top 40%
×9story building
+123ft-9ft

Overall

2614

Males

1833

M30-34

380

6M→8M

6.0 - 8.0 mi

Top 35%
×12story building
+166ft-53ft

Overall

2305

Males

1681

M30-34

360

8M→9.6M

8.0 - 9.6 mi

Top 59%
×13story building
+68ft-193ft

Overall

3911

Males

2356

M30-34

501

9.6M→10M

9.6 - 10.0 mi

Top 32%
×2story building
+0ft-24ft

Overall

2121

Males

1489

M30-34

324

10M→10.5M

10.0 - 10.5 mi

Top 30%
×6story building
+1ft-73ft

Overall

1948

Males

1420

M30-34

318

10.5M→12M

10.5 - 12.0 mi

Top 49%
×21story building
+280ft-26ft

Overall

3232

Males

2088

M30-34

461

12M→Finish

12.0 - 13.1 mi

Top 48%
×7story building
+14ft-89ft

Overall

3179

Males

2067

M30-34

464

Passing Analysis

Category:
Athletes Passed
1536*
Passed By
418
Net Change
+1118
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#3981
2M → 4M68311+672#3981#3309
4M → 6M32316+307#3309#3002
6M → 8M253*32+221#3002#2781
8M → 9.6M40181-141#2781#2922
9.6M → 10M1039+94#2922#2828
10M → 10.5M240+24#2828#2804
10.5M → 12M56121-65#2804#2869
12M → Finish54*48+6#2869#2863
TOTALS1536*418+1118

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

Passing Charts

Category:
Loading...

Passing Circle

Loading...

Position Flow

Loading...

Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events